9TCS1083NLGI8,PDF,9TCS1083NLGI8 PDF资料,Datasheet,下载9TCS1083NLGI8技术资料

ADVANCE INFORMATION DATASHEET

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR,

& PWM FAN CONTROLLER FOR PORTABLE DEVICES

9TCS1083

Description

Features

The 9TCS1083 is a highly programmable IC that integrates

clock synthesizers with a PWM Fan controller and multiple

temperature sensors for hardware thermal protection.

Thermal Sensor

• Two temperature sensor channels

• Both H/W & S/W programmable over/under temperature

alarms

• No Calibration required in application

• Diode failure detection

• Support SMBUS Alert

• Accuracy: 1ꢀC (+60ꢀC to +100ꢀC); 2ꢀC (0ꢀC to

+100ꢀC)

The device has an ultra-low-power 32.768 kHz frequency

generator to support Real Time Clocks (RTC). This device

can generate the 32.768 kHz frequency up to four years

powered by a CR2032 battery. The 9TCS1083 can output

computer system clock frequencies of 24, 25, 27, and 48

MHz which will reduce the component count on the circuit

board.

• Offset register for system calibration

• Series resistor cancellation feature

The fan controller is pulsed width modulated (PWM) used

for the temperature proportional speed control. The device

is highly configurable through I2C for ease and flexibility of

use. The fan controller has three different modes of

operation and will work with multiple pole, brushless DC

fans. An integrated Start-up Timer ensures reliable motor

start-up and turn-on, or following a detected fault condition.

Fan Controller

• High Frequency or Low Frequency PWM Outputs for Use

with 4-Wire Fans

• TACH Inputs to Measure Fan Speed

The 9TCS1083 includes a temperature monitor that

• OS Independent Automatic Fan Speed Control Based on

measures two diodes. The temperature sensor is optimized

to be accurate within 1ꢀC within the temperature range of

60ꢀC to 100ꢀC. This device is highly programmable through

Thermal Information

• Dynamic TMIN Control Mode to Optimize System

Acoustics

2

the use of I C to set high and low limits for all the

• Default Startup at 100% PWM for All Fans for Robust

Operation

temperature channels as well as set critical limits. The

hardware limits drive dedicated fault and alert pins for

system shutdown.

System Clock PLL Synthesizers

The 9TCS1083 is available in a 32-pin QFN package and is

available for commercial temperature range.

• Scalable Low Voltage VDD I/O (1.5V to 1.05V) to reduce

power consumption (apply to 25MHz output)

• Integrated series termination resistors

• Selectable – Single-ended 24MHz/27MHz/48MHz clock

output @ VDD3.3V

• 3 – single ended 25MHz clock outputs (buffer out)

• 32.768 kHz outputs with < 1.8µA power consumption for

system RTC circuit

Applications

• Notebook Computers

• Netbook Computers

• Smartbook Computers

• Consumer Portable Devices

• Embedded Systems

• Networking Equipment (i.e. Routers, Switches)

• Network Area Storage

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

1

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Block Diagram

VDD_TS

Sample

Regulator

Current

RAM

11 bits

ADC

Digital

ALERT#

THERM#

Channel 1

Channel 2

Analog

MUX

Reference

Voltage

Fault Detect

TACH

PWM

Fan Controller

POR

V_bat

V_3.3

Power

Switch

VDD_RTC

32K_A

Amplitude

Control

32.768K

DCO

32K_A_IO

32K_B_IO

SMBCLK

SMBDAT

SMBUS

VDD_32KB

Fraction N

Divider

32K_B / 25M_C

VDDIO_25MA

25M_A

X1

X2

25M_IO

Xtal

VDD_25MB

25M_B

GND

VDD_24M

24M_48M

VDD_27M

27M_48M

24/48M_IO

27/48M_IO

Ultra

Low Power

PLL

Preferred drive strengths for single-ended outputs.

Transmission lines to load do not share series resistors.

Ω

Desktop (Zo=50 ) and mobile (Zo=55 ) have the same drive strength.

Number of Loads Actually Driven.

Match Point for N

& P Voltage /

Current (mA)

Number of Loads

to Drive

1 Load Rs = 2 Loads Rs= 3 Loads Rs =

0.56 / 33

Ω

1

2

3

33 [39

]

-

D.C.Drive Strength

Ω

(17 )

0.92 / 66

39 [43

Ω

22 [27 ]

Ω

(14 )

1.15 / 99

43 [43

Ω

27 [33 ]

15 [22 ]

Ω Ω

Ω

)

(11.6

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

2

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Pin Assignment

32 31 30 29 28 27 26 25

Thermal_DXP2

Thermal_DXN2

32K_A

THERM#

ALERT#

VDD_RTC_OUT

V_3.3

1

2

3

4

5

6

7

8

24

23

22

21

20

19

18

17

VDDIO_25MA

GND

9TCS1083

X2

25M_A

X1

VDD_24M

SMBDATA

SMBCLK

SEL_24*/24M_48M

9

10 11 12 13 14 15 16

* Internal Pull-Up Resistor

** Internal Pull-Down Resistor

*** External Series Resistor is Required on Board.

Power Group

Pin Number

Description

VDD

GND

VDDIO_25MA IO power

VDD_24M power

4

7

2

5

VDD_27M power

10

13

21

22

26

12

2

VDD_25B Power

V_3.3 core power

2

VDD_RTC_Out

27

25

VDD_TS power

VDD_32KB Power

V_bat for DCO and 32KA power

29

30

27

* pin33: thermal pad

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

3

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Pin Descriptions

PIN # PIN NAME

TYPE

IN external thermal diode P (Channel 2)

DESCRIPTION

1

2

3

4

5

6

7

Thermal_DXP2

Thermal_DXN2

32K_A

VDDIO_25MA

GND

25M_A

IN external thermal diode N (Channel 2)

RTC clock 32.768KHz output A

Power for 25MHz_A output

Ground pin

OUT

PWR

OUT 25MHz_A Output

Power for 24/48 MHz output

VDD_24M

PWR

I/O

24Mhz Enable Latched Input, programmable Free Running 24/48M clock output.

SEL_24 Selects the functionality of the 24_48M output as follows:

1 = 24M output (Default)

8

9

SEL_24*/24M_48M

GND

0 = 48M output

PWR Ground pin

27Mhz Enable Latched Input, programmable Free Running 27/48M clock output.

SEL_27 Selects the functionality of the 27_48M output as follows:

1 = 27M output (default)

0 = 48M output

10 SEL_27*/27M_48M

I/O

11 VDD_27M

12 25M_B

13 GND

PWR Power for 27/48 MHz output

OUT 25MHz_B Output

PWR Ground pin

14 VDD_25MB

15 TACH

PWR Power for LDO and main circuit

IN Fan controller TACH signal input

Fan controller PWM signal output

16 PWM

OUT

17 SMBCLK

18 SMBDAT

19 X1

IN SMBUS clock

SMBUS data

I/O

IN Crystal input, Nominally25MHz.

20 X2

OUT Crystal output, Nominally 25MHz

21 V_3.3

PWR Power for 32K PLL core, connect to system 3.3V_StandBy

OUT Power for chipset RTC circuit

22 VDD_RTC_OUT

23 ALERT#

24 FAULT#

25 GND_TS

26 VDD_TS

27 GND

open drain interrupt output for SMBUS

OUT

OUT open drain interrupt output for external hardware connection

PWR Ground pin for thermal sensor function

PWR Power for thermal sensor function

PWR Ground pin

25Mhz_C output select pin, programmable Free Running 32.768Khz or 25Mhz clock output.

SEL_25* Selects the functionality of the 32K_25M output as follows:

1 = 25Mhz output (Default)

28 SEL_25*/32KB_25M_C

I/O

0 = 32.768Khz output

Power for 32.768Khz_B output

PWR Power for 32kHz_A output. Connect to coin cell battery

IN external thermal diode N

IN external thermal diode P

PWR GND

29 VDD_32KB

30 VBAT

31 Thermal_DXN1

32 Thermal_DXP1

33 Thermal Pad

PWR

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

4

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Frequency and Output Selection Tables

Clock Output Selection Table

Pin number

Setting

Output

48MHz

Remark

L

H

L

8

default, internal pull high

24MHz

48MHz

9

H

L

27MHz

32.768KHz_B

25MHz_C

28

H

Output Select table_A

Power Supply

VDDIO_Control

Outputs

25M_A

V_bat

V_3.3

VDD_32KB VDDIO_25A

VDD_25B

32K_A

32K_B

25M_B

Vdd_RTC

2.3~3.0

0

3.3

0

3.3

ON

OFF

ON

OFF

ON

OFF

ON

Vbat

V3.3

3.3

1.05~1.5

ON

Note: when V3.3 is applied, XTAL will be always ON. 32K source will switch to an analog PLL; fan control will be ON

Output Select table_B

Power Supply

Outputs

Fan Control

Thermal

V3.3

VDD24

VDD27

VDD_TS

24_48M

27_48M

Sensor

OFF

ON

3.3

0

3.3

0

OFF

ON

OFF

ON

3.3

ON

Note: When either VDD@$/VDD27/VDDTS is ON, V3.3 should be ON

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

5

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Absolute Maximum Ratings

Stresses above the ratings listed below can cause permanent damage to the 9TCS1083. These ratings, which are standard

values for IDT commercially rated parts, are stress ratings only. Functional operation of the device at these or any other

conditions above those indicated in the operational sections of the specifications is not implied. Exposure to absolute

maximum rating conditions for extended periods can affect product reliability. Electrical parameters are guaranteed only over

the recommended operating temperature range.

PARAMETER

SYMBOL

VDDxxx

CONDITIONS

MIN

MAX

3.6

UNITS

V

Notes

1,2

Maximum Supply Voltage

Core/Logic Supply

Maximum Supply Voltage

Maximum Input Voltage

Minimum Input Voltage

VDDIOxxx

Core/Logic Supply

3.3V LVCMOS Inputs

Any Input

3.6

V

1,2

1,2,3

1,2

V_IH

V_IL

GND - 0.5

-65

^ꢀC

ꢀC

Storage Temperature

Case Temperature

Ts

Tcase

-

150

115

1,2

¹Unless otherwise noted, guaranteed by design and characterization, not 100% tested in production.

²Operation under these conditions is neither implied, nor guaranteed.

³Maximum input voltage is not to exceed maximum VDD

Electrical Characteristics–SMBus Interface

PARAMETER

SYMBOL

CONDITIONS

MIN

2.7

MAX

3.6

UNITS

V

Notes

1

SMBus Voltage

V_DD

V_OLSMB

@ I_PULLUP

Low-level Output Voltage

Current sinking at

0.4

V

1

I_PULLUP

T_RI2C

SMB Data Pin

4

mA

1

V_OLSMB= 0.4 V

SCLK/SDATA

Clock/Data Rise Time

SCLK/SDATA

(Max VIL - 0.15) to

(Min VIH + 0.15)

(Min VIH + 0.15) to

(Max VIL - 0.15)

1000

300

ns

1

T_FI2C

Clock/Data Fall Time

Maximum SMBus Operating

F_SMBUS

Block Mode

400

kHz

Frequency

¹Unless otherwise noted, guaranteed by design and characterization, not 100% tested in production.

AC Electrical Characteristics–Input/Common Parameters

PARAMETER

SYMBOL

CONDITIONS

MIN

MAX

1.8

UNITS

ms

Notes

1

From VDD Power-Up or de-

assertion of PD# to 1st clock

Differential output enable after

PD# de-assertion

T_STAB

Clk Stabilization

Tdrive_PD#

T_DRPD

300

us

1

¹Unless otherwise noted, guaranteed by design and characterization, not 100% tested in production.

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

6

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Electrical Characteristics–Input/Supply/Common Parameters

PARAMETER

Ambient Operating Temp

Supply Voltage

SYMBOL

Tambient

V_3.3

CONDITIONS

MIN

MAX

70

UNITS

Notes

-

0

ꢀC

V

Supply Voltage

Single-ended inputs

3.135

0.9975

2.3

3.465

1.575

3.465

V_DD+ 0.3

0.8

Supply Voltage

VDD_xx

VDDIO_25MA

V_bat

V

Supply Voltage

V

Supply Voltage

V

V_IHSE

Input High Voltage

Input Low Voltage

2

V

1,4

V_ILSE

V_SS- 0.3

V

Low Threshold Input-

High Voltage

Low Threshold Input-

Low Voltage

Input Leakage Current

V_{IH_FS}

3.3 V +/-5%

0.7

V_DD+ 0.3

V

1

V_{IL_FS}

I_IN

V_SS- 0.3

-5

0.35

5

V

1

V_IN= V_{DD ,}V_IN= GND

Inputs with pull or pull down

resistors

uA

1,3

I_INRES

Input Leakage Current

-200

2.4

200

uA

1

V_IN= V_{DD ,}V_IN= GND

V_OHSE

V_OLSE

Single-ended outputs, I_OH= -1mA

Output High Voltage

Output Low Voltage

V

1,2

1

Single-ended outputs, I_OL= 1 mA

Full active mode, C_L= Full load,

3.3V Rail

0.4

50

I_DD3.3OP

mA

I_DD3.3PD#

I_DD3.3WOL

I_DD3.3RTC

Complete Power-Down, 3.3V Rail

WOL Mode with 25MA running,

3.3V Rail

RTC Mode with 32KA running,

10

25

mA

uA

1

3.3V Operating Supply Current

0.1

3.3V Rail

Full active mode, C_L= Full load,

I_{DDIO_OP}

I_{DDIO_PD#}

I_{DDDIO_WOL}

I_{DDIO_RTC}

5

mA

uA

1

VDDIO Rails

Complete Power-Down,

VDDIO Rails

WOL Mode with 25MA running,

VDDIO Rails

RTC Mode with only 32KA

running, VDDIO Rails

RTC Mode with 32KA running,

V_bat Rail

1

VDDIO Operating Supply

Current

10

0.5

1.5

V_bat Operating Supply

Current

IDD_V_bat

uA

F_i

V_DD= 3.3 V

25MHz Typical

Input Frequency

MHz

nH

pF

1

L_pin

Pin Inductance

7

5

6

C_IN

Logic Inputs

Output pin capacitance

X1 & X2 pins

1.5

Input Capacitance

C_OUT

C_INX

pF

*TA = 0 - 70ꢀC; Supply Voltage VDD = 3.3 V +/-5%, VDDIO_25

¹Unless otherwise noted, guaranteed by design and characterization, not 100% tested in production.

²Signal is required to be monotonic in this region.

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

7

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

AC Electrical Characteristics–Power Management

Output clocks power consumption

Power Supply

Outputs

Power Consumption @ 2' transmission line

Vbat / V3.3

I_Vbat

I_V3.3

I_VDDIO_32KB I_VDDIO_25M

2.3~3.3

32K_A

32K_A+B

2uA

0

1uA

0

1mA

2mA

32K, 25M_A

32K_A+B,25MA+B

Note: when V3.3 is applied, XTAL wil be always ON. 32K source will switch to an analog PLL; fan control will be ON

Power Supply

Power consumption @ 2' transmission line

V3.3/VDD24/VDD

VDD24

I_V3.3

I_VDD24

I_VDD27

I_VDDTS

27/VDD_TS

3.3

0

24Mhz

24/27Mhz

2mA

0

1mA

0

3mA

24/27Mhz+Thermal+Fan

0.8mA

Note: When either VDD@$/VDD27/VDDTS is ON, V3.3 should be ON

Power Switch (VBAT/V33 -> VDD_RTC)

Integrated power switch detects the VDD_RTC SW to coin battery (VBAT) or main power supply (V33).

When there is no V33 (V33=0), the SW will connect the VDD_RTC to VBAT; when V33 goes higher than 2.5V, the VDD_RTC

will be switched to V33 with no delay. After V33 goes lower than 2.3V, the VDD_RTC will be switched to VBAT, no delay.

V_bat 3.0V

V_3.3

VDD_RTC=V_bat

VDD_RTC=V_3.3

VDD_RTC=Vbat

V_bat

VDD_RTC

2.5V

2.3V

V_3.3 < 2.5V

V_3.3 < 2.3V

When VDD_RTC = VBAT, the power SW circuit consumes < 100nA.

When VDD_RTC = V33, the power consumption on VBAT needs to be “0”.

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

8

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Electrical Characteristics–USB48MHz

PARAMETER

Long Accuracy

Clock period

SYMBOL

ppm

T_period

CONDITIONS

MIN

-100

20.8313

MAX

100

20.8354

UNITS NOTES

see Tperiod min-max values

48.00MHz output nominal

ppm

ns

1,2

1

V_OH

V_OL

I_OH= -1 mA

I_OL= 1 mA

Output High Voltage

Output Low Voltage

2.4

-33

30

V

0.4

-33

V

1

V _OH@MIN = 1.0 V

mA

V/ns

%

I_OH

I_OL

Output High Current

Output Low Current

V

_OH@MAX = 3.135 V

_OL@ MIN = 1.95 V

V

V_OL@ MAX = 0.4 V

Measured from 0.8 to 2.0 V

Measured from 2.0 to 0.8 V

V_T= 1.5 V

38

2

Rising Edge Slew Rate

Falling Edge Slew Rate

Duty Cycle

t_SLR

1

2

d_t1

45

55

350

t_jcyc-cyc

V_T= 1.5 V

Jitter, Cycle to cycle

ps

*TA = 0 - 70ꢀC; Supply Voltage V_3.3 = VDD_TS = 3.3 V +/-5%, VDD_24M = VDD_27M = VDD_25MB = 3.3V +/- 5%,

VDD_25MA = 1.05V +/- 5%, VDD_32KB = 3.3V +/- 5%, CL = 5pF with Rs = 27 (unless otherwise specified)

Ω

¹Guaranteed by design and characterization, not 100% tested in production.

²All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 25.000000MHz

Electrical Characteristics–24MHz

PARAMETER

Long Accuracy

Clock period

SYMBOL

ppm

CONDITIONS

MIN

-100

41.6625

MAX

100

41.6708

UNITS NOTES

see Tperiod min-max values

ppm

ns

1,2

1

T_period

24.00MHz output nominal

V_OH

V_OL

I_OH= -1 mA

I_OL= 1 mA

Output High Voltage

Output Low Voltage

2.4

-33

30

V

0.4

-33

V

1

V _OH@MIN = 1.0 V

mA

V/ns

%

I_OH

I_OL

Output High Current

Output Low Current

V

_OH@MAX = 3.135 V

V_OL@ MIN = 1.95 V

V_OL@ MAX = 0.4 V

Measured from 0.8 to 2.0 V

Measured from 2.0 to 0.8 V

V_T= 1.5 V

38

4

Rising Edge Slew Rate

Falling Edge Slew Rate

Duty Cycle

t_SLR

1

4

d_t1

45

55

350

t_jcyc-cyc

V_T= 1.5 V

Jitter, Cycle to cycle

ps

*TA = 0 - 70ꢀC; Supply Voltage V_3.3 = VDD_TS = 3.3 V +/-5%, VDD_24M = VDD_27M = VDD_25MB = 3.3V +/- 5%,

VDD_25MA = 1.05V +/- 5%, VDD_32KB = 3.3V +/- 5%, CL = 5pF with Rs = 27 (unless otherwise specified)

Ω

¹Guaranteed by design and characterization, not 100% tested in production.

²All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 25.000000MHz

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

9

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Electrical Characteristics–25MHz

PARAMETER

Long Accuracy

Clock period

SYMBOL

ppm

CONDITIONS

MIN

-100

MAX

100

UNITS NOTES

see Tperiod min-max values

ppm

ns

1,2

1

T_period

25.00MHz output nominal

39.99600 40.00400

V_OH

V_OL

I_OH= -1 mA

I_OL= 1 mA

Output High Voltage

Output Low Voltage

2.4

0.4

-29

-23

29

V

1

V _OH@MIN = 1.0 V

mA

V/ns

%

I_OH

I_OL

Output High Current

Output Low Current

V

_OH@MAX = 3.135 V

V_OL@ MIN = 1.95 V

_OL@ MAX = 0.4 V

V

27

Rising Edge Slew Rate

Falling Edge Slew Rate

Duty Cycle

t_SLR

Measured from 0.8 to 2.0 V

Measured from 2.0 to 0.8 V

V_T= 1.5 V

1

4

d_t1

45

55

500

t_jcyc-cyc

V_T= 1.5 V

Jitter, Cycle to cycle

ps

*TA = 0 - 70ꢀC; Supply Voltage V_3.3 = VDD_TS = 3.3 V +/-5%, VDD_24M = VDD_27M = VDD_25MB = 3.3V +/- 5%,

VDD_25MA = 1.05V +/- 5%, VDD_32KB = 3.3V +/- 5%, CL = 5pF with Rs = 0 (unless otherwise specified)

Ω

¹Guaranteed by design and characterization, not 100% tested in production.

²All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 25.000000MHz

Electrical Characteristics–27MHz

PARAMETER

Long Accuracy

Clock period

SYMBOL

ppm

CONDITIONS

MIN

-50

37.0365

MAX

50

37.0376

UNITS

ppm

ns

Notes

1,2

see Tperiod min-max values

T_period

27.000MHz output nominal

V_OH

V_OL

I_OH= -1 mA

I_OL= 1 mA

Output High Voltage

Output Low Voltage

2.4

-29

29

V

1

0.4

-23

V _OH@MIN = 1.0 V

V_OH@MAX = 3.135 V

V_OL@ MIN = 1.95 V

V_OL@ MAX = 0.4 V

Measured from 0.8 to 2.0 V

Measured from 2.0 to 0.8 V

V_T= 1.5 V

mA

V/ns

%

I_OH

I_OL

Output High Current

Output Low Current

27

4

Rising Edge Slew Rate

Falling Edge Slew Rate

Duty Cycle

t_SLR

t_FLR

1

4

d_t1

45

55

200

t_jcyc-cyc

Cycle to Cycle, V_T= 1.5 V

Jitter, Cycle to cycle

ps

*TA = 0 - 70ꢀC; Supply Voltage V_3.3 = VDD_TS = 3.3 V +/-5%, VDD_24M = VDD_27M = VDD_25MB = 3.3V +/- 5%,

VDD_25MA = 1.05V +/- 5%, VDD_32KB = 3.3V +/- 5%, CL = 5pF with Rs = 0 (unless otherwise specified)

Ω

¹Guaranteed by design and characterization, not 100% tested in production.

²All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 25.000000MHz

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

10

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Electrical Characteristics–32kHz

PARAMETER

Long Accuracy

Clock period

SYMBOL

ppm

T_period

CONDITIONS

MIN

32.768 Typical

37.0365 37.0376

MAX

UNITS

kHz

ns

Notes

1,2

see Tperiod min-max values

27.000MHz output nominal

Output High Voltage

V_OH

V_OL

V_OH

V_OL

32K_A Output

32K_B Output

0.8

1.2

V

1

Output Low Voltage

Output High Voltage

Output Low Voltage

Initial Frequency Error

0.3

3.465

0.3

0.9975

0C to 70C,

Dynamic Adjusted Time Keeping

+/-10

ppm

sec/day

32K_{F_ERRT_DAT}

0.03

Rising Edge Slew Rate

Falling Edge Slew Rate

Duty Cycle

t_SLR

t_FLR

d_t1

Measured from 20% to 80%

Measured from 80% to 20%

VT = V_bat/2

V/ns

%

1

40

60

*TA = 0 - 70ꢀC; Supply Voltage V_3.3 = VDD_TS = 3.3 V +/-5%, VDD_24M = VDD_27M = VDD_25MB = 3.3V +/- 5%,

Ω

VDD_25MA = 1.05V +/- 5%, VDD_32KB = 3.3V +/- 5%, CL = 2pF with Rs = 0 (unless otherwise specified)

¹Guaranteed by design and characterization, not 100% tested in production.

²All Long Term Accuracy and Clock Period specifications are guaranteed assuming that REFOUT is at 25.000000MHz

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

11

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

General SMBus Serial Interface Information for 9TCS1083

How to Write

How to Read

• Controller (host) sends a start bit

• Controller (host) sends the write address

• IDT clock will acknowledge

• Controller (host) will send a start bit

• Controller (host) sends the write address

• IDT clock will acknowledge

• Controller (host) sends the beginning byte location = N

• IDT clock will acknowledge

• Controller (host) sends the beginning byte location = N

• IDT clock will acknowledge

• Controller (host) sends the byte count = X

• IDT clock will acknowledge

• Controller (host) will send a separate start bit

• Controller (host) sends the read address

• IDT clock will acknowledge

• IDT clock will send the data byte count = X

• IDT clock sends Byte N+X-1

• Controller (host) starts sending Byte N through Byte

N+X-1

• IDT clock will acknowledge each byte one at a time

• Controller (host) sends a Stop bit

• IDT clock sends Byte 0 through Byte X (if X was

(H)

written to Byte 8)

• Controller (host) will need to acknowledge each byte

• Controller (host) will send a not acknowledge bit

• Controller (host) will send a stop bit

Index Block Write Operation

Index Block Read Operation

Controller (Host)

starT bit

Slave Address

WR WRite

IDT (Slave/Receiver)

Controller (Host)

starT bit

IDT (Slave/Receiver)

T

Slave Address

WR

WRite

ACK

Beginning Byte = N

Data Byte Count = X

Beginning Byte N

Beginning Byte = N

RT

Repeat starT

Slave Address

ReaD

RD

ACK

O

Data Byte Count=X

Beginning Byte N

ACK

Byte N + X - 1

ACK

O

P

stoP bit

O

Byte N + X - 1

N

P

Not acknowledge

stoP bit

Read Address

Write Address

D2

D3

(H)

H)

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

12

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Byte0

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

0

1

SIGN

64C

32C

16C

8C

PWD

0

1

CH1 Diode ALERT High

Temperature Limit

ALERT_TH1

RW

0

4C

2C

1C

Byte1

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

0

1

SIGN

64C

32C

16C

8C

PWD

0

1

CH2 Diode ALERT High

Temperature Limit

ALERT_TH2

RW

0

4C

2C

1C

Byte2

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

0

1

SIGN

64C

32C

16C

8C

PWD

0

1

CH3 Diode ALERT High

Temperature Limit

ALERT_TH3

RW

0

4C

2C

1C

Byte3

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

0

1

SIGN

64C

32C

16C

8C

PWD

1

0

1

CH1 Diode ALERT Low

Temperature Limit

ALERT_TL1

RW

0

4C

2C

1C

Byte4

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

0

1

SIGN

64C

32C

16C

8C

PWD

1

0

1

CH2 Diode ALERT Low

Temperature Limit

ALERT_TL2

RW

0

4C

2C

1C

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

13

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Byte5

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

0

1

SIGN

64C

32C

16C

8C

PWD

1

0

1

CH3 Diode ALERT Low

Temperature Limit

ALERT_TL3

RW

0

4C

2C

1C

Byte6

Name

Control Function

Type

RW

0

1

PWD

CH1_EN

CH2_EN

CH3_EN

Enable Temp-Sensor Channel1

Enable Temp-Sensor Channel2

Enable Temp-Sensor Channel3

Disable

Enable

0

1

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

RW

00 = 1

10 = 3

00 = 1

10 = 8

01 = 2

11 = 4

01 = 4

11 = 16

0

Consecutive ALERT

Average_Fact

Consecutive ALERT Report

Average the converted temperature

Byte7

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

0

1

PWD

0

1

64C

32C

16C

8C

CH1 Diode THERMALTemperature

Limit

THERMAL1

RW

0

4C

2C

1C

Byte8

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

0

1

PWD

0

1

64C

32C

16C

8C

CH2 Diode THERMALTemperature

Limit

THERMAL2

RW

0

4C

2C

1C

Byte9

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

0

1

PWD

0

1

64C

32C

16C

8C

CH3 Diode THERMALTemperature

Limit

THERMAL3

RW

0

4C

2C

1C

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

14

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Byte10

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

RW

0

1

PWD

1.28C

0.64C

0.32C

0.16C

4C

1

0

1

0

D_A1

Channel1 Gain(Slop) Coef.

0

2C

D_B1

Channel1 offset Coef.

1C

0.5C

Byte11

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

RW

0

1

PWD

1.28C

0.64C

0.32C

0.16C

4C

1

0

1

0

D_A2

Channel2 Gain(Slop) Coef.

0

2C

D_B2

Channel2 offset Coef.

1C

0.5C

Byte12

Name

MASK3

MASK2

MASK1

Control Function

Type

RW

0

1

PWD

MASK Channel3 ALERT

MASK Channel2 ALERT

MASK Channel1 ALERT

Non-Mask

Mask

16C

8C

0

Bit7

Bit6

Bit5

Bit4

Bit3

THERMAL_HYS

THERMAL Limit Hysteresis

RW

0

4C

2C

1C

1

0

Bit2

Bit1

Bit0

Byte13

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

R

0

1

PWD

CH3 high

CH3 Low

CH2 High

CH2 Low

CH1 High

CH1 Low

CH1 Fault

CH2 Fault

Channel 3 ALERT High Alarm

Channel 3 ALERT Low Alarm

Channel 2 ALERT High Alarm

Channel 2 ALERT Low Alarm

Channel 1 ALERT High Alarm

Channel 1 ALERT Low Alarm

Channel 1 Diode Fault (Open)

Channel 2 Diode Fault (Open)

Non-Flag

Flag

R

Byte14

Bit7

Name

BUSY

HIGH

LOW

Control Function

ADC is converting

Type

R

0

1

PWD

Non-Flag

Flag

One of the Channel ALERT High

R

Bit6

One of the Channel ALERT Low

One of the EXT-Channel

Open/Short

R

Bit5

FAULT

R

Non-Flag

Flag

Bit4

R

Bit3

Bit2

Bit1

Bit0

CH1_THERMAL

CH2_THERMAL

CH3_THERMAL

Channel1 THERMAL Alarm

Channel2 THERMAL Alarm

Channel3 THERMAL Alarm

Non-Flag

Flag

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

15

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Byte15

Name

Control Function

Clear all the Alarm Flag

Type

RW

0

1

PWD

Fault_Clear

One-Shot

No Clear

Clear

0

Bit7

Bit6

Bit5

Bit4

Bit3

One-Shot Temperature Conversion

Enable Dynamic average

Disable Oneshot

Do OneShot

DYN_AVE_EN

Conv. Rate 3

Conv. Rate 2

Disable Dynamic Average Enable Dynamic Average

See Detail From Convert Ratio Table

Conv. Rate 1

Conv. Rate 0

RW

1

0

Bit2

Bit1

Bit0

Byte16

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

R

0

1

SIGN

64

32

16

8

PWD

R

TEMP_CH1<10:3>

MSB of Channel 1 Temperature

R

4

R

2

R

1

Byte17

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

R

0

1

PWD

0

R

0.5

0.25

0.125

TEMP_CH1<2:0>

LSB of Channel 1 Temperature

R

Byte18

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

R

0

1

SIGN

64

32

16

8

PWD

R

TEMP_CH2<10:3>

MSB of Channel 2 Temperature

R

4

R

2

R

1

Byte19

Name

Control Function

Type

R

0

1

PWD

0

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

R

0.5

0.25

0.125

TEMP_CH2<2:0>

LSB of Channel 2 Temperature

R

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

16

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Byte20

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

R

0

1

SIGN

64

32

16

8

PWD

R

TEMP_CH3<10:3>

MSB of Channel 3 Temperature

R

4

R

2

R

1

Byte21

Name

Control Function

Type

R

0

1

PWD

0

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

R

0.5

0.25

0.125

TEMP_CH3<2:0>

LSB of Channel 3 Temperature

R

Bit0

Byte22

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

R

0

1

128

64

32

16

8

PWD

R

TACH_MEASURE<7:0>

LSB of TACH Measurement

R

4

R

2

R

1

Byte23

Bit7

Name

Control Function

Type

R

0

1

PWD

0

R

Bit6

R

Bit5

R

4096

2048

1024

512

Bit4

R

Bit3

TACH_MEASURE<12:8>

MSB of TACH Measurement

R

Bit2

R

Bit1

Bit0

256

Byte24

Name

Control Function

Type

RW

0

00 - Direct Drive Mode

10 - Dynamic PWM Mode

00 - 25KHz

1

01 - Thermal Trigger Mode

11 - Reserved

01 - 22KHz

PWD

1

0

1

0

1

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Mode Select

Select the FAN Operating Mode

Freq_Sel

Edge

Select the PWM frequency

FAN Type Selection

10 - 27KHz

11 - Reserved

01 - 2 Poles FAN

11 - 4 Poles FAN

01 - 32

00 - 1Pole FAN

10 - 3 Poles FAN

00 - 0

Error Range

TACH Detect Tolerant Error Rang

10 - 64

11 - 128

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

17

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Byte25

Name

Control Function

Type

RW

0

1

PWD

00 - 250ms

01 - 500ms

0

1

0

1

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Spin-Up Time

The Time For Spin-Up

10 - 1s

11 - 2s

000 - 30%, 001 - 35%

100 - 50%, 101 - 55%

010 - 40%, 011 - 45%

110 - 60%, 111 - 65%

Spin-Up Duty

Spin-Up cnt

PWM Duty-Cycle For Spin-Up

Time Out Times For Spin-Up

00 - 3

10 - 5

01 - 4

11 - 6

Byte26

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

RW

0

1

PWD

0

1/2

1/4

1/8

Duty_Cycle<10:3>

MSB of PWM Duty-Cycle Setting

0

1/16

1/32

1/64

1/128

Byte27

Bit7

Name

Control Function

Type

0

1

PWD

RW

1/256

1/512

1/1024

0

Duty_Cycle<2:0>

LSB of PWM Duty-Cycle Setting

0

RW

0

1

0

1

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

000 - 100ms, 001 - 200ms 010 - 300ms, 011 - 400ms

100 - 500ms, 101 - 600ms 110 - 700ms, 111 - 800ms

Update Time

T_Hys

TACH Detect Update Time

00 - 2C

01 - 5C

Temperature Hysteresis For FAN's

Trigger Point

10 - 10C

11 - 15C

Byte28

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

RW

0

1

PWD

64C

32C

16C

8C

1

First Temperature Trigger Point of

FAN

TL_FAN

0

4C

2C

1C

Byte29

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

RW

0

1

PWD

64C

32C

16C

8C

1

Second Temperature Trigger Point

of FAN

TH_FAN

0

4C

2C

1C

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

18

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Byte30

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

RW

0

1

PWD

4096

2048

1024

512

256

128

64

1

The Maximum Limit of TACH

Number

TACH_MAX

0

32

Byte31

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

RW

0

1

512

256

128

64

32

16

8

PWD

0

The Minimum Limit of TACH

Number

TACH_MIN

0

4

Byte32

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

RW

0

1

PWD

4096

2048

1024

512

256

128

64

0

MSB TACH threshold of Static

Mode(T>T0_FAN)

TACH_S1<12:5>

0

32

Byte33

Bit7

Name

Control Function

Type

RW

0

1

16

8

PWD

0

RW

Bit6

LSB TACH threshold of Static

Mode(T>T0_FAN)

TACH_S1<4:0>

0

RW

4

Bit5

RW

2

Bit4

Bit3

Bit2

Bit1

Bit0

1

00 - CH1

01 - CH2

1

0

Temperature Channel Selection For

FAN

FAN_CH_SEL

10 - Reserved

11 - Reserved

Byte34

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

RW

0

1

PWD

4096

2048

1024

512

256

128

64

0

MSB TACH threshold of Static

Mode(T>T1_FAN)

TACH_S2<12:5>

0

32

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

19

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Byte35

Bit7

Name

Control Function

Type

RW

0

1

16

8

PWD

0

Bit6

LSB TACH threshold of Static

Mode(T>T1_FAN)

TACH_S2<4:0>

0

4

Bit5

2

Bit4

RW

1

0

Bit3

Bit2

FAN MASK

SEL_ALERT

Mask Fan Fault

0=normal

00 - ALERT=Temp-Sensor

Alert

1=masked

RW

01 - ALERT=FAN Fault

0

Bit1

Bit0

Select the ALERT Source

10 - ALERT=Temp-Senso 10 - ALERT=Temp-Senso

Alert or FAN Fault

Alert and FAN Fault

Byte36

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

RW

0

1

128

64

32

16

8

PWD

0

1

0

The PWM duty-cycle

incremental/decremental Step

PWM Step

0

4

2

1

Byte37

Bit7

Name

Control Function

Type

R

0

1

PWD

R

Bit6

R

Bit5

R

Bit4

R

Bit3

R

Bit2

FAN TACH measurement is <

Minimum limit (Too Fast)

FAN TACH measurement is >

Maximum limit (Too Slow)

FAN_Fault1

FAN_Fault2

R

Non-Flag

Flag

Bit1

Bit0

Byte38

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

R

0

1

PWD

R

TACH_AIM_OUT

Targeted TACH Readback

R

Byte39

Name

Control Function

Type

RW

0

1

PWD

fast mode

Switch the 25us clock to 25MHz

Disable

000 -

Enable

0

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

FAN_test_signal_sel

OUTPUT the test signal to PAD

SEL_DIV2

SEL_XTAL

Temp-Sensor Reference CLK DIV2

I2C Clock Source selection

RW

TS_REF=25MHz

Free-Run OSC

TS_REF=12.5M

XTAL

0

Bit1

RW

Bit0

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

20

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Byte40

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

RW

0

1

PWD

MASK_ALERT_PAD

MASK ALERT PAD

Normal

Tristate

0

Byte41

Name

Control Function

Stop 27M_48M output

Stop 24M 48M output

Type

RW

0

1

PWD

STOP_27M_48M

Stopped

Free-Run

Stopped

Run

1

0

1

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Run

STOP_24M_48M

EN_STOP25M_C

Stoppable

Run

EN_STOP25M_B

EN_STOP25M_A

STOP_25M_C

STOP_25M_B

STOP_25M_A

Stop 25M_C output

Stop 25M_B output

Stop 25M_A output

Run

Byte42

Name

Control Function

Type

RW

0

1

PWD

BYTE COUNT BYTE

0

1

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Bytes 43 through 46 Reserved

Byte47

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

RW

0

1

PWD

0

1

REV_ID

VENDOR_ID

Bytes 48 through 63 Reserved

Byte64

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

RW

0

1

PWD

LCKBYPASSB

PLL Lock Bypassb

Bypass

Not Bypas

1

0

1

0

1

REFCOUNT<6:0>

PLL M Counter

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

21

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Byte65

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Name

Control Function

Type

RW

0

1

PWD

0

1

0

1

VCOCOUNT<9:2>

PLL N COUNTER

Byte 66 reserved

Byte67

Bit7

Name

Control Function

Type

0

1

PWD

RW

0

SL<1:0>(25MHzB)

SL<1:0>(25MHzA)

SL<1:0>(27MHz)

SL<1:0>(24MHz)

25M_B Slew Rate Control

RW

1

0

1

0

1

0

1

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

25M_A Slew Rate Control

27M Slew Rate Control

24M Slew Rate Control

Bytes 68 through 79 reserved

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

22

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Frequency Generator 32.768 kHz

Recommended 25MHz Quartz Crystal

Specifications

32.768K Clocks Operation

The IDT9TCS1083/1085 32.768K clock output operates in

two modes:

SMD 25MHz AT cut crystal and maximum driver level at

100µW, for example TXC.

1. When the system is not power ON, V_3.3 is not ready and

IDT 9TCS1083/1085 is powered with the coin cell battery.

The 32kHz comes from the DCO with the digital calibration

to keep the accuracy.

VBAT Battery Recommendations and

Connection Considerations

Recommended to use coin cell battery CR2032, CR2025 or

equivalent.

2. After V_3.3 is ready, the 9TCS1083/1085 creates a

seamless switch power from V_bat to V_3.3 and the

calibration will go to full speed: this will happen every 2~3ms

to keep the accuracy and the 32K source will be switched to

25MHz oscillator with Fraction-N divider to get the 0ppm.

The normal coin cell battery storage capacity is 170 mAh to

220mAh and the average total RTC circuit current required

5uA, the battery life will be at least:

170,000 µAh / 5 µA = 34,000 hours = 3.88 years

32.768K DCO uses a 25Mhz crystal oscillator for calibration

reference, thus the 25MHz oscillator must be fine tuned in

order to get the best 32.768kHz accuracy.

The RTC circuit (PCH) usually consumes 3µA power, thus

the 32.768kHz clock generator circuit needs be less than

2µA. The IDT9TCS1083/1085 32.768kHz generator

averaged operation current is less than 2µA.

RTC Routing Guidelines

Single

X1

Trace impedance

50 ohm

Length

6 inches

Notes

The coin cell battery with IDT 9TCS1083/1085 VBAT power

pin connection requires a 100 ohm and 22µF ceramic

capacitor current limitation and noise filtering. The RC

needs to be added to the battery to limit the current spikes

effects.

X2

The VDD_RTC connect to the Intel ICH chip and the

9TCS1083/1085 provide seamless power switching

between main V_3.3 and V_bat.

V_3.3

VDD_RTC

9TCS1083

Power Switch

100

V_bat

1uf

10~22uF

CR2032H

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

23

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Reference Schematic For VBAT and VDD_RTC

V_3.3

5V/12V

To system I2C

or Int.

5V/12V

10K

VDD_TS

5V/12V 4-wire

FAN

ALERT#

THERM#

To system H/W

or Int.

VCC

PWM

DXN2

DXP2

3.3V/5V

DXP1

DXN1

PWM

TACH

GND

10K

TACH

VDD_RTC

4.7K

V_3.3

100 ohm

To

Vdd_RTC

1uf

V_3.3

V_bat

9TCS1083

VDD_32KB

32K_A

V_bat

(Coin Cell

battery)

10uf

CLK

VDDIO_25MA

25M_A

CLK

SMBCLK

SMBDAT

To Smbus

master

32K_B / 25M_C

VDD_25MB

VDD_24M

CLK

25M_B

25Mhz crystal

X1

VDD_24/48M

X2

GND

24M_48M

VDD_27/48M

27M_48M

VDD_27M

CLK

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

24

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Frequency Synthesizer – 24/48/27/25 MHz

IDT9TCS1083/1085 includes a low power PLL to generate

24/27/48 MHz clock outputs. The PLL uses an external

25MHz crystal for reference clock input, thus all 25MHz

clock outputs are through a fanout buffer directly for optimal

performance. Fine tunning on the external crystal cap load

is required to get an accurate 25MHz reference clock.

24/27/48MHz Connection Recommendations

VDD_24M/27M

Z=50 ohm

27 ohm

5pF

CLK_24/48/

27M

25MHz_A Connection Recommendations

Z=50 ohm

27 ohm

VDDIO_25A

Z=50 ohm

CLK_25A

a. Default 2X push-pull IO drive strength for 24/48/27MHz.

b. On board 27 ohm series resistor for each path.

c. Rising/falling slew rate: 1v/ns~4v/ns

4pF

d. 2 bits (3 steps) I2C for the Slew Rate.

a. VDDIO_25A range is from 1.05V to 3.3V.

b. Optimize range is 1.05V to 1.5V.

c. Pull up strength is 50 ohm@VDDIO_25A=1.5V

d. Pull down strength is 50 ohm.

e. No on-board 33 ohm series resistor is required.

25MHz_B/C Connection Recommendations

VDD_25B/C

Z=50 ohm

CLK_25B/C

5pF

a. VDD_25B/C range is from 1.05V to 3.3V.

b. Optimized for 3.3V VDDIO.

c. Pull up strength is 50 ohm@VDD_25B/C=3.3V

d. Pull down strength is 50 ohm.

e. No on-board 33 ohm series resistor is required.

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

25

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Thermal Sensor

The thermal sensor in the 9TCS1083 is a low power and highly accurate temperature sensor. It is optimized to operate

between 60ꢀC to 100ꢀC. There are two external thermal diode connection input temperature sensors. The chip supports

diode faults and temperature alerts for the thermal sensor; Moreover, the thermal sensor has the capability to go into standby

mode for power savings.

The temperature sensor's analog to digital converter (ADC) has 11 bits of resolution. One LSB is equal to 0.125ꢀC. The

accuracy of the temperature sensor is 1ꢀC between 60ꢀC - 100ꢀC for the two sensors.

The 9TCS1083 temperature sensor has the ability to cancel the series resistance on the remote diode inputs. Parasitic

resistances to the DXP and DXN inputs seen in series with the remote diode are caused by PCB trace resistance along with

the overall length, bulk parasitic resistance in the remote temperature transistor junctions, and series resistance in the CPU.

This resistance appears as a temperature offset in the thermal sensor measurement and is approximately +0.7ꢀC per Ohm.

The 9TCS1083 has the ability to cancel up to 100Ω of series resistance.

Current Driver

BGP Ref

Analog MUX

Channel 1

Channel 2

Local

Channel 1 Temp Reg

Channel 2 Temp Reg

NPN 2N3904

Temp Sensor

Dector

11 bit ADC

Local Diode

Timing Generator

The thermal sensor in 9TCS1083 outputs the measured temperature from a beta compensated temperature reading from

an external diode. The temperature sensor architecture uses an on-chip ADC as shown to convert the analog temperature

into an 11-bit digital code. Using averaging techniques along with the ADC architecture allows accurate temperature

measurements. The ability to have programmable conversion rates and adjustable averaging schemes allow the user the

flexibility to balance accuracy versus conversion speed per the system requirements.

The temperature measurement relies on the characteristics of a semiconductor junction operating at a fixed current level.

Forcing a fixed current through the temperature diodes and detecting the changes in VBE, the forward voltage of the diode,

the temperature proportionality can be determined.

External Thermal Diode Selection

The 9TCS1083 supports the following temperature diodes:

• Typical remote substrate transistor (i.e. CPU substrate PNP intrinsic diode)

• Discrete PNP transistor diode (i.e. 2N3906)

• Discrete NPN transistor diode (i.e. 2N3904)

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

26

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

DXP

DXN

DXP

PNP

transistor

i.e. 2N3906

NPN

transister

i.e. 2N3904

PNP

transistor

i.e. to CPU

DXN

When the thermal sensor is used in a noisy environment, a capacitor can be connected across DXP and DXN to provide

some noise filtering capabilities. However, large capacitances affect the accuracy of the temperature measurement. A

maximum capacitance of 300pF can be used to help mitigate the noise.

Temperature Sensor Channel Selection

To enable the temperature sensors, register byte[6], bit[7:5]. The default is the internal diode sensor. Bit[7] through bit[5]

corresponds to Channel 1 to Channel 3, the internal diode, respectively.

Thermal Diode Fault Conditions

9TCS1083 has the ability to detect an open or a short condition for each temperature sensor diode. An external diode fault

is defined as one of the following:

• An open between DXP and DXN

• A short from VDD to DXP

• A short from VDD to DXN

The diode fault monitoring is enabled at the start of every temperature measurement. When an external diode fault is

detected, the ALERT# pin asserts and the temperature data reads 00h in the MSB and LSB of the corresponding

temperature registers:

• DX1 MSB - byte[17], bit[2:0]

• DX1 LSB - byte[16], bit[7:0]

• DX2 MSB - byte[19], bit[2:0]

• DX2 LSB - byte[18], bit[7:0]

During the fault condition, byte[13], bit[1] or bit[0], will be set depending on the channel that has the fault. Bit[1] corresponds

to DX1, and Bit[0] corresponds to DX2; furthermore, an open/short fault flag will be set in register byte[14], bit[4].

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

27

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Temperature Threshold ALERT# Pin

Temperature Threshold Alerts

The temperature threshold alerts are sent to the ALERT#

pin. To mask this alert being sent to the ALERT# pin, set

register byte[12], bit[7:5] to logic 1. Bit[7] through bit[5]

corresponds to channel 1 to channel 3 (the internal diode).

Through register writes, the high and low temperature limits

can be set such that it will trigger an alert. This alert can be

monitored through the registers or can be sent to the

ALERT# pin. Each channel has its own programmable

register to set the thresholds as follows:

Consecutive Alerts

(1) High Temperature Alert (default 127°C)

The number of temperature threshold alerts before the

assertion of the ALERT# pin can be set by the user through

register byte[6], bit[3:2] as follows:

Byte[2:0], Bit[7:0]

Temperature

Sign Bit

64ꢀC

Bit[7]

Bit[6]

Bit[5]

Bit[4]

Bit[3]

Bit[2]

Bit[1]

Bit[0]

Byte[6], Bit[3:2]

Number of Alert Events

[00] (default)

[01]

1

2

3

4

32ꢀC

16ꢀC

[10]

8ꢀC

[11]

4ꢀC

2ꢀC

Temperature Threshold Alert Alarm Register

1ꢀC

All three temperature channels have a readable registers,

byte[13], bit[7:2] that is set when a temperature threshold

alert has occurred. Bit[7:6] is for channel 3 high and low

thresholds, respectively, bit[5:4] is for channel 2, and bit[3;2]

is for channel 1.

Where byte[0] is the high temperature alert for DX1, byte[1]

is for DX2, and byte[2] relates to the internal diode.

(2) Low Temperature Alert (default 127°C)

Critical Thermal Warnings

Byte[5:3], Bit[7:0]

Temperature

Sign Bit

64ꢀC

The 9TCS1083 will have register programmable critical

thermal threshold warnings for all three temperature sensor

channels. Similar to the temperature threshold alerts, the

critical high temperatures can be set such that a warning

can be dispatched to the THERM# pin and the readable

registers. The thermal warnings also have programmable

hysteresis. Each channel has its own programmable

register to set the thresholds as follows:

Bit[7]

Bit[6]

Bit[5]

Bit[4]

Bit[3]

Bit[2]

Bit[1]

Bit[0]

32ꢀC

16ꢀC

8ꢀC

4ꢀC

2ꢀC

(1) Critical Thermal Warning (default 127°C)

1ꢀC

Byte[9:7], Bit[6:0]

Temperature

64ꢀC

Where byte[3] is the low alert for DX1, byte[4] is for DX2, and

byte[5] relates to the internal diode.

Bit[6]

Bit[5]

Bit[4]

Bit[3]

Bit[2]

Bit[1]

Bit[0]

32ꢀC

Temperature Threshold Alert Status

16ꢀC

When a temperature threshold alert is activated, a status

indicator bit is also set. Register byte[14], bit[6:5] will be set

depending on the high or low alert. Bit[6] is the high and

bit[5] is the low alert flag. To clear the alert, register

byte[15], bit[7] needs to be written with a "1". Writing this bit

will also clear the critical thermal warnings.

8ꢀC

4ꢀC

2ꢀC

1ꢀC

Where byte[7] is the critical thermal warning for DX1, byte[8]

is for DX2, and byte[9] relates to the internal diode.

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

28

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

(2) Critical Thermal Warning Temperature Hysteresis

(default 4°C)

The conversion rate programmable register detail is as

follows:

Byte[12], Bit[4:0]

Bit[4]

Temperature

Byte[17], Bit[4:1]

[0000]

Conversion Rate

16/sec *

8/sec **

4/sec

16ꢀC

8ꢀC

4ꢀC

2ꢀC

1ꢀC

Bit[3]

[0001]

Bit[2] (default)

Bit[1]

[0010] (default)

[0011]

2/sec

Bit[0]

[0100]

1/sec

[0101]

1/2 sec

Critical Thermal Warning Status

[0110]

1/4 sec

When a critical warning is activated, a status indicator bit is

also set. Register byte[14], bit[2:0] will be set depending on

which channel had the critical event. Bit[2] is for channel 1,

bit[1] is for channel 2, and bit[0] is for the internal diode.

[0111]

1/8 sec

[1000]

1/16 sec

1/32 sec

1/64 sec

[1001]

[1010]

Critical Thermal Warning THERM# Pin

The critical thermal warnings are sent to the THERM# pin

and requires a system register write to byte[15], bit[7] to

reset. This fault clear I2C write will also clear the

temperature threshold alerts

* Valid when only one temperature sensor channel is used.

** Valid when the number of temperature sensor channel is

less than three.

Active/Standby Mode

The thermal sensor architecture has dynamic averaging to

smooth out the temperature conversion readings. To select

the number of temperature reading averages requires the

dynamic averaging function to be enabled, register byte[15],

bit[5]. The number of averages is then selected as follows:

The thermal sensor has two modes in the temperature

conversion process:

(1) Active mode – In this mode the ADC will have a

selectable conversion rate for the temperature sensing.

Byte[6], Bit[1:0]

Average the ADC Temperature

(2) Standby mode – The system will command via I2C the

9TCS1083 to sample the temperature sensors. Once the

temperature reading from the ADC is updated, the

temperature sensor will be on stand-by awaiting the next

system request.

[00]

[01]

[10]

[11]

1

4

8

16

Register byte[15], bit[6] controls whether the thermal sensor

is in active or standby mode.

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

29

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Fan Controller

Fan Controller System Diagram (Schematic

Example)

Fan Controller Description

The fan driver for the 9TCS1083 controls a 4-wire, 12V or

5V, multiple pole DC fan. The fan controller has three

modes of operation: (1) direct drive, (2) thermal trigger, and

(3) Dynamic PWM. All modes have register

programmability for the user to set the desired fan speed

and necessary parameters. The controller is also capable

of detecting stalled fans and upon detection will set the

appropriate alerts. The 9TCS1083 also has user

configuration registers to adjust both the ramp-rate and the

spin-up routine to accommodate different fan start up

requirements.

5V/12V

5V/12V 4-wire FAN

10K

IDT

MobileAccess

9TCS1083/85

VCC

3.3V/5V

PWM

TACH

GND

PWM

10K

TACH

4.7K

The fan controller uses the input from the user selectable

external diode connections, DX1 or DX2, or the user can opt

to use the on chip internal diode for the temperature sensor

for the fan controller. The 9TCS1083 fan controller can be

set to run a user specified fan speed. In this mode the

tachometer signal from the fan will be ignored. In thermal

trigger mode, the user specifies the temperature thresholds,

the temperature threshold hysteresis, and the

Fan Selection Detail

The 9TCS1083 fan controller will control 5V - 12V Brushless

DC fans. The fans need to be 4-wire fans and can have one

to four poles. The number of fan poles is specified in

Register byte[24], bit[3:2]. A 2-pole fan is the default.

Byte[24], Bit[3:2]

Fan Poles

corresponding fan speed (fan tachometer target) for the

different temperature zones defined by the thresholds. The

controller will then run the fan at the specified fixed fan

speed settings depending on the temperature from the

sensors. In dynamic PWM mode, the fan controller will

adjust the PWM duty cycle to maintain the system defined

fan speed. In this mode, the system reads a temperature

sensor and the corresponding fan speed, tachometer

reading. The system will then determine and update the

9TCS1083 directly by writing the accessible registers byte

32 and byte 33. 9TCS1083 will then adjust the PWM to

achieve the desired system fan speed.

[00] (default)

[01]

1

2

3

4

[10]

[11]

Modes of Operation

The 9TCS1083 fan controller has three user selectable

methods to control the fan speed. The default fan speed

control mode is Thermal Trigger mode. The modes are

selected by writing the I2C register byte[24], bit[7:6] as

follows:

The PWM has ten bits of duty cycle resolution with a 25kHz

frequency. The PWM frequency is selectable between 22,

25, and 27kHz.

Fan Controller Modes

Direct Drive

Byte[24], Bit[7:6]

[00]

[01]

[10]

Thermal Trigger (default)

Dynamic PWM

The 9TCS1083 includes hardware programmable

temperature limits and dedicated system shutdown output

for thermal protection.

The PWM frequency can be set by writing register byte[24],

bit[5:4] as follows:

PWM

Frequency

Duty Cycle

Resolution [# bits]

Byte[24],

Bit[5:4]

25kHz (default)

22kHz

10

11

9

00

01

10

27kHz

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

30

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Direct Drive Mode

Temperature Sensor

In Direct Drive Mode, the fan speed is directly controlled by

setting a fixed PWM duty cycle. After a proper fan speed

spin-up, the tachometer signal will be ignored and the

9TCS1083 will output the fixed programmed PWM duty

cycle to the fan.

The temperature can be set to read from the external

thermal sensors, DX1 or DX2, or from the internal diode

sensor. It is selectable by writing Byte[33].

FAN_CH_SEL - byte[33], bit[1:0]

To operate in direct drive mode, Register byte[24], bit[7:6] =

[00].

Byte[33], bit[1:0]

Temperature Sensor Selection

[00]

[01]

CH1

CH2

The duty cycle is selectable through registers by writing

byte[26], bit[7:0] and byte[27], bit[7:5] as follows:

[10] (default)

Internal Temperature Diode

Byte[26], Bit[7:0]

Logic "1", Selects Duty Cycle

Tachometer Update

Bit[7]

Bit[6]

Bit[5]

Bit[4]

Bit[3]

Bit[2]

Bit[1]

Bit[0]

1

The tachometer reading can be updated at a rate of

700msec up to 100msecs. Tachometer Update Time,

byte[27], bit[4:2]

1/2

1/4

1/8

Byte[27], bit[4:2]

Tachometer Update Time

100 msec

1/16

1/32

1/64

1/128

[000]

[001] (default)

[010]

200 msec

300 msec

[011]

400 msec

[100]

500 msec

[101]

600 msec

Byte[27], Bit[7:5]

Logic "1", Selects Duty Cycle

[110]

700 msec

Bit[7]

Bit[6]

Bit[5]

1/256

1/512

[111]

800 msec

1/1024

It is important to also set the required fan spin-up specifics

for proper use. The 9TCS1083 after completion of the fan

spin-up routine will then put out the correct programmed

PWM duty cycle.

Thermal Trigger Mode

In this mode the 9TCS1083 fan speed controller is

programmed to run at different fan speeds. The 9TCS1083

will monitor the fan tachometer and depending on the

temperature from a thermal sensor diode and the

pre-programmed temperature settings, the 9TCS1083 will

adjust the fan speed to the targeted tachometer settings.

Register byte[24], bit[7:6] = [01] will put 9TCS1083 into

thermal trigger mode.

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

31

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

b. TH_FAN - byte[29], bit[6:0] (default 127ꢀC)

Example of Thermal Trigger Mode Setup

The figure below shows how the programmable thresholds

relate to the fan speed settings.

Byte[29], Bit[7:0] Logic "1", Selects Temp Threshold

Bit[7]

Bit[6]

Bit[5]

Bit[4]

Bit[3]

Bit[2]

Bit[1]

Bit[0]

—

64ꢀC

32ꢀC

16ꢀC

8ꢀC

TACH_S2

TH_FAN

Thermal Hysteresis

4ꢀC

2ꢀC

TACH_S1

1ꢀC

TL_FAN

Thermal Hysteresis

To set TL_FAN and TH_FAN a logic "1" is written into the

proper register. For example, to get 70ꢀC, a "1" would be

written for Bit[6], Bit[2], and Bit[1].

FAN OFF

(2) Temperature Hysteresis, T_HYS, byte[27], bit[1:0]:

Byte[27], bit[1:0] Temperature Threshold Hysteresis

From the figure above, it can be seen that the fan speed will

adjust between the tachometer settings TACH_S1 and

TACH_S2 given the temperature from the thermal sensor.

The temperature thresholds are set by TH_FAN and

TL_FAN along with the temperature hysteresis, T_HYS. In

this mode, the fan will have active fault condition monitoring

along with fan spin-up control. The rate at which the fan will

speed up or slow down, going from one TACH setting to the

other, can be programmed by the user. Lastly, the fan speed

tolerance can also be selectable via registers.

[00]

[01]

2ꢀC

5ꢀC

[10]

10ꢀC

15ꢀC

[11] (default)

(3) Tachometer Targets:

a. TACH_S1 - byte[32], bit[7:0] and byte[33], bit[7:3]

To set up the fan speed controller in Thermal Trigger Mode,

the following registers will need to be programmed.

Byte[32], bit[7:0]

Logic "1" selects Tachometer

Reading

(1) Temperature Thresholds:

Bit[7]

Bit[6]

Bit[5]

Bit[4]

Bit[3]

Bit[2]

Bit[1]

Bit[0]

4096

2048

1024

512

256

128

64

a. TL_FAN - byte[28], bit[6:0] (default 127ꢀC)

Byte[28], Bit[7:0] Logic "1", Selects Temp Threshold

Bit[7]

Bit[6]

Bit[5]

Bit[4]

Bit[3]

Bit[2]

Bit[1]

Bit[0]

—

64ꢀC

32ꢀC

16ꢀC

8ꢀC

32

4ꢀC

2ꢀC

1ꢀC

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

32

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

(4) To Set the minimum and maximum fan speed, use

the RPM formula, “Formula 1”.

Byte[33],

bit[7:3]

Logic "1" selects Tachometer

Reading

a. TACH_MIN - byte[31], bit[7:0]

Bit[7]

Bit[6]

Bit[5]

Bit[4]

Bit[3]

16

8

Byte[31], bit[7:0]

Logic "1" selects Tachometer

Reading

Bit[7]

Bit[6]

Bit[5]

Bit[4]

Bit[3]

Bit[2]

Bit[1]

Bit[0]

512

256

128

64

32

16

8

4

2

1

b. TACH_S2 - byte[34], bit[7:0] and byte[35], bit[7:3]

Byte[34], bit[7:0]

Logic "1" selects Tachometer

Reading

Bit[7]

Bit[6]

Bit[5]

Bit[4]

Bit[3]

Bit[2]

Bit[1]

Bit[0]

4096

2048

1024

512

256

128

64

4

b. TACH_MAX - byte[30, bit[7:0]

Byte[30], bit[7:0]

Logic "1" selects Tachometer

Reading

Bit[7]

Bit[6]

Bit[5]

Bit[4]

Bit[3]

Bit[2]

Bit[1]

Bit[0]

4096

2048

1024

512

256

128

64

32

Byte[35], bit[7:3]

Logic "1" selects Tachometer

Reading

Bit[7]

Bit[6]

Bit[5]

Bit[4

16

8

32

(5) To adjust the rate at which the fan speed will

transition from one TACH setting to the other, the RPM

equation, “Formula 1” is again applied to determine the

incremental or decremental fan speed step size.

4

2

Bit[3]

1

The TACH_S1/S2 is set using the following RPM formula:

Tachometer PWM Step Control - byte[36], bit[7:0]

60

(Formula 1)

RPM = 2× F

×

Byte[36], bit[7:0]

Logic "1" selects Tachometer

Reading

sample

TACH _ Re ading

Bit[7]

Bit[6]

Bit[5]

Bit[4]

Bit[3]

Bit[2]

Bit[1]

Bit[0]

128

64

32

16

8

where: RPM - fan revolution per minute

- 25kHz sample internal clock sample rate

TACH_Reading - user programmable registers Byte[32]

through Byte[35]

F

sample

4

2

1

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

33

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

The system will poll byte[22], bit[7:0], and byte[23], bit[4:0]

Spin-up

for the TACH reading which will correlate to the current fan

In this mode the fan controller will also have spin-up control

speed by the RPM equation, “Formula 1”.

capabilities. At any time the fan attempts to go from a zero

RPM to a higher fan speed, the fan will always go through

the proper spin-up routine. The time allotted for fan spin-up

as well as the spin-up PWM duty cycle can be adjusted via

registers by writing byte[25], bit[7:3] as follows:

Byte[22], bit[7:0]

Logic "1" selects Tachometer

Reading

Bit[7]

Bit[6]

Bit[5]

Bit[4]

Bit[3]

Bit[2]

Bit[1]

Bit[0]

128

64

32

16

8

Spin-up Time - byte[25], bit[7:6]

Byte[25], bit[7:6]

Bit[7:6] = [00]

Spin-up Time

250msec

500msec

1sec

Bit[7:6] = [01]

4

Bit[7:6] = [10]

2

Bit[7:6] = [11] (default)

2sec

1

Spin-up PWM duty cycle - byte[25], bit[5:3]

Byte[25], bit[5:3]

Bit[5:3] = [000]

Spin-up PWM duty cycle

Byte[23], bit[4:0]

Logic "1" selects Tachometer

Reading

30%

35%

40%

45%

50%

55%

60%

65%

Bit[5:3] = [001]

Bit[7]

Bit[6]

Bit[5]

Bit[4]

Bit[3]

4096

2048

1024

512

Bit[5:3] = [010]

Bit[5:3] = [011]

Bit[5:3] = [100]

Bit[5:3] = [101]

256

Bit[5:3] = [110] (default)

Bit[5:3] = [111]

The system can read the temperature sensor diodes from

the 9TCS1083 or from any sensor available to the system to

determine the necessary adjustments to the fan speed.

Dynamic PWM Mode

The 9TCS1083 in this mode will be directed by the system

via registers as to the target RPM by which the fan speed

should be running. The system will read a temperature

sensor along with the fan tachometer information and make

the determination as to what the nominal fan speed should

be. This information is fed back to the 9TCS1083 via

register writes. 9TCS1083 will comply and attempt to run

the fan at the requested speed.

To put the 9TCS1083 in Dynamic PWM mode register

byte[24], bit[7:6] = [10]

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

9TCS1083 REV 0.5 100511

34

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

System Direct Tachometer Control

Byte[31], bit[7:0]

Logic "1" selects Tachometer

Reading

The system will directly write to register byte[32], bit[7:0] and

byte[33], bit[7:3] a desired TACH setting.

Bit[2]

Bit[1]

Bit[0]

16

8

Byte[32], bit[7:0]

Logic "1" selects Tachometer

Reading

4

b. TACH_MAX - byte[30, bit[7:0]

Bit[7]

Bit[6]

Bit[5]

Bit[4]

Bit[3]

Bit[2]

Bit[1]

Bit[0]

4096

2048

1024

512

256

128

64

Byte[30], bit[7:0]

Logic "1" selects Tachometer

Reading

Bit[7]

Bit[6]

Bit[5]

Bit[4]

Bit[3]

Bit[2]

Bit[1]

Bit[0]

4096

2048

1024

512

256

128

64

32

Byte[33], bit[7:3]

Logic "1" selects Tachometer

Reading

32

Bit[7]

Bit[6]

Bit[5]

Bit[4]

Bit[3]

16

8

Fan Fault Conditions

The fan fault conditions will be activated and reported if the

minimum or maximum fan speed is detected. During a

FAULT1, maximum fan speed, 9TCS1083 will stop the fan

and then wait for the FAULT1 flag to be cleared. For a

FAULT2 condition, stalled fan, 9TCS1083 will go through the

spin-up procedure to try to start the fan. The number of

attempts to try to restart the fan is programmable. The fan

fault conditions are reported via register on byte[37], bit[1;0].

4

2

1

The tachometer setting is related to the fan speed by the

RPM equation, “Formula 1”.

Setting Minimum and Maximum Tachometer

RPM

Fan Fault Conditions

Byte[37], bit[1:0]

Logic "1" = FAULT CONDITION

Fault1 - Fan speed too fast

The minimum and maximum tachometer settings can be set

for the fan faults.

Bit[1]

Bit[0]

Fault2 - Fan speed too slow

a. TACH_MIN - byte[31], bit[7:0]

Byte[31], bit[7:0]

Logic "1" selects Tachometer

Reading

The number of times for spin-up retries:

Byte[25], bit[2:1]

Number of Spin-up Attempts

Bit[7]

Bit[6]

Bit[5]

Bit[4]

Bit[3]

512

256

128

64

[00]

[01] (default)

[10]

3

4

5

6

[11]

32

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

35

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Spin-up Details

100% *

30%~65%

Step

¼ of

spin up

time

Step

Target count

Update Update Update

Time Time Time

Target count reached

Spin Up Time

1. The spin-up time can be specified in register byte[25],

bit[7:6].

Fan Controller Temperature Diode Sensor

Spin-up Time - byte[25], bit[7:6]

The fan controller can use either one of the three channels

for temperature sensing. To specify which temperature

sensor is used for the fan controller, register byte[33],

bit[1:0].

Byte[25], bit[7:6]

Bit[7:6] = [00]

Spin-up Time

250msec

500msec

1sec

Bit[7:6] = [01]

Bit[7:6] = [10]

Bit[7:6] = [11] (default)

2sec

2. During spin-up, the PWM duty cycle can be set to 100%

for one quarter of the total spin-up time by register byte[25],

bit[0].

3. The next three quarters of the spin-up time, the PWM duty

cycle is set by register[25], bit[5:3].

Spin-up PWM duty cycle - byte[25], bit[5:3]

Byte[25], bit[5:3]

Bit[5:3] = [000]

Spin-up PWM duty cycle

30%

35%

40%

45%

50%

55%

60%

65%

Bit[5:3] = [001]

Bit[5:3] = [010]

Bit[5:3] = [011]

Bit[5:3] = [100]

Bit[5:3] = [101]

Bit[5:3] = [110] (default)

Bit[5:3] = [111]

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

9TCS1083 REV 0.5 100511

36

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Marking Diagram (NLG32)

IDT

9TCS1083B

$$$

YYWW

######

Notes:

1. “######” is the lot number.

2. YYWW is the last two digits of the year and week that the part was assembled.

3. “$$$” is the assembly mark code.

4. Bottom marking: country of origin if not USA.

Thermal Characteristics 32-pin VFQFPN

Parameter

Symbol

Conditions

Min.

Typ. Max. Units

Thermal Resistance Junction to

Ambient

θ

Still air

34

29

27

32

° C/W

JA

θ

1 m/s air flow

3 m/s air flow

JA

θ

JA

Thermal Resistance Junction to Case

θ

JC

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

37

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Package Outline and Package Dimensions (32-pin VFQFPN, 0.50mm pitch)

Package dimensions are kept current with JEDEC Publication No. 95

Ordering Information

Part / Order Number

9TCS1083NLGI

Marking

see page 37

Shipping Packaging

Trays

Package

32-pin VFQFPN

Temperature

0 to +85° C

9TCS1083NLGI8

Tape and Reel

“G” after the two-letter package code are the Pb-Free configuration and are RoHS compliant.

While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology (IDT) assumes

no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No

other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications

such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not

recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT

does not authorize or warrant any IDT product for use in life support devices or critical medical instruments.

IDT® MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

38

9TCS1083 REV 0.5 100511

9TCS1083

MOBILE ACCESS™—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES

Innovate with IDT and accelerate your future networks. Contact:

www.IDT.com

For Sales

800-345-7015

408-284-8200

Fax: 408-284-2775

For Tech Support

www.idt.com/go/clockhelp

Corporate Headquarters

Integrated Device Technology, Inc.

www.idt.com

Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered

trademarks used to identify products or services of their respective owners.

Printed in USA

厂商	型号	描述	页数
IDT	9TCS1082BNLG	[ Analog Circuit, 1 Func, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 ]	27 页
IDT	9TCS1082BNLG8	[ Analog Circuit, 1 Func, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 ]	27 页
IDT	9TCS1083BNLG	[ Analog Circuit, 1 Func, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 ]	39 页
IDT	9TCS1083BNLG8	[ Analog Circuit, 1 Func, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 ]	39 页
IDT	9TCS1083NLGI	[ Analog Circuit, 1 Func, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 ]	39 页
IDT	9TCS1085NLGI	[ Analog Circuit, 1 Func, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 ]	39 页
IDT	9TCS1085NLGI8	[ Analog Circuit, 1 Func, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 ]	39 页