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OZ998S

型号：

OZ998S

描述：

智能管理智能多-DIMM选择[ Intelligent Manager Smart Multi-DIMM Selector ]

品牌：

ETC[ ETC ]

页数：

7 页

PDF大小：

53 K

下载PDF手册
OZ998  
Intelligent Manager  
Smart Multi-DIMM Selector  
FEATURES  
GENERAL DESCRIPTION  
O2Micro’s OZ998 Multi-DIMM Selector supports the  
switching between a primary SMBus and 3 other  
secondary SMBus. This function is particularly useful  
for DIMM devices and the support of Intel’s PAS  
(Preboot Authentication Service).  
•
•
•
•
•
•
•
•
•
SMBus, version 1.0, compliant  
Intel PAS Protected Storage support  
Support Pentium and x86-based designs  
Support SMBus Q-Buffering via PWRGD  
Support SMBus selector for dual/triple DIMMs  
32KHZ input clock or Crystal input  
Support 2 different power planes  
In addition, the OZ998 can be configured to support  
two different power planes with different sets of  
General Purpose Input/Output (GPIO) signals, which  
supplements and enhances the power management  
capability of the chipsets, commonly found in an ACPI  
(Advanced Configuration of Power Interface)  
subsystem.  
10 bytes scratch pad registers  
20 possible edge-sensitive programmable GPIOs  
per device  
•
•
•
•
•
8 possible Open Drain, Open Collector outputs  
Programmable addresses for cascaded OZ998s  
Supports 3.3V or 5V operation  
Up to 20 possible GPIOs are available per device,  
and among those, GPIO[15:8] are programmable to  
be either positive or negative-edged triggers to  
generate an SMIEVENT/SMBALERT# to the system.  
GPIO[7:0] are programmable to be either a regular  
TTL level output, open drain or open collector output.  
To support over 20 GPIOs through cascading multiple  
OZ998 devices, configure each individual OZ998  
device ID. Up to 8 Auto LED Flash (ALF) are available  
to drive an LED or speaker at a programmable  
frequency.  
Supports 5V tolerant LVTTL inputs (OZ998B)  
LOW power hardware-driven speaker alarm  
outputs  
•
•
SMBALERT# and SMI event outputs  
8 programmable interrupt inputs for SMI event or  
SMBALERT#  
•
8 Auto LED Flash (ALF) programmable outputs  
with 10% or 50% duty cycles  
The OZ998 is packaged in a low profile, small 28 pin  
SSOP.  
ORDERING INFORMATION  
OZ998S - 28 pin SSOP  
07/13/00  
©Copyright 2000 by O2Micro  
OZ998-SF-2.2  
All Rights Reserved  
Page 1  
OZ998  
PIN DIAGRAM  
OZ998  
28  
VCC  
1
P_SMBCLK  
XIN/32KHZ  
P_SMBDATA  
PWRGD  
27  
26  
25  
2
3
4
XOUT  
RESET#  
GPIO[15]/S_SMBCLK3  
GPIO[16]/S_SMBCLK1  
GPIO[14]/S_SMBDATA3  
GPIO[13]/SMB_SEL[1]  
GPIO[12]/SMB_SEL[0]  
24  
23  
5
GPIO[17]/S_SMBDATA1  
GPIO[18]/S_SMBCLK2  
6
7
8
22  
21  
GPIO[19]/S_SMBDATA2  
GPIO[0]/SMIEVENT/ID[0]  
GPIO[1]/ID[1]  
GPIO[11]  
GPIO[10]  
20  
19  
18  
9
10  
11  
GPIO[9]  
GPIO[2]/SMBALERT#/ID[2]  
GPIO[3]/ID[3]  
GPIO[8]  
17  
16  
GPIO[7]/ID[7]  
GPIO[6]/ID[6]  
GPIO[5]/ID[5]  
12  
13  
14  
GPIO[4]/ID[4]  
GND  
15  
OZ998-SF-2.2  
Page 2  
OZ998  
PIN DESCRIPTION  
Name  
Pin  
No.  
1
Type  
Input  
Drive  
Definition  
P_SMBCLK  
P_SMBDATA  
PWRGD  
I
3.3V/5V Ext-PU  
-
Primary SMBus Clock Input  
Primary SMBus Data I/O  
Host System Power Good  
Primary SMBus Clock Input for SMBus protocol communication.  
I/O 3.3V/5V Ext-PU 12mA  
Primary SMBus Data Input/Output for SMBus protocol communication.  
TTL  
2
3
I
-
This pin indicates that the host system’s power, including the Core Logic chipsets, is stable. Before the  
host system’s power is stable, this input pin will tri-state the output pins, GPO[19:8], from OZ998 while  
GPO[7:0] will maintain its original value. Upon PWRGD going Low, the Secondary SMBus will be  
disconnected from the Primary SMBus.  
RESET#  
4
I
TTL  
This active low pin will reset the OZ998.  
I/O TTL  
-
Reset  
GPIO[16]/  
5
4mA  
General Purpose I/O/  
S_SMBCLK1  
Secondary SMBus-1 Clock I/O  
Fully programmable GPIO that can be used for a variety of dedicated or specific functions. Pin GPIO[16] is  
defaulted as an input. It is programmable to function as GPI[16] input, GPO[16] output or secondary  
SMBus-1 Clock Input/Output. Refer to GPIO[19:16] Config.1&2 Registers for more details and GPIO  
Config. Tables (section 8) for input/output selections.  
GPIO[17]/  
6
I/O  
TTL  
4mA  
General Purpose I/O/  
S_SMBDATA1  
Secondary SMBus-1 Data I/O  
Fully programmable GPIO that can be used for a variety of dedicated or specific functions. Pin GPIO[17] is  
defaulted as an input. It is programmable to function as GPI[17] input, GPO[17] output or secondary  
SMBus-1 Data Input/Output. Refer to GPIO[19:16] Config.1&2 Registers for more details and GPIO Config.  
Tables (section 8) for input/output selections.  
GPIO[18]/  
7
I/O  
TTL  
4mA  
General Purpose I/O/  
S_SMBCLK2  
Secondary SMBus-2 Clock I/O  
Fully programmable GPIO that can be used for a variety of dedicated or specific functions. Pin GPIO[18] is  
defaulted as an input. It is programmable to function as GPI[18] input, GPO[18] output or secondary  
SMBus-2 Clock Input/Output. Refer to GPIO[19:16] Config.1&2 Registers for more details and GPIO  
Config. Tables (section 8) for input/output selections. Note: OZ998A GPIO [19:18] need 47k pull-up for  
normal operation, OZ998B doesn’t.  
GPIO[19]/  
8
I/O  
TTL  
4mA  
General Purpose I/O /  
S_SMBDATA2  
Secondary SMBus-2 Data I/O  
Fully programmable GPIO that can be used for a variety of dedicated or specific functions. Pin GPIO[19] is  
defaulted as an input. It is programmable to function as GPI[19] input, GPO[19] output or secondary  
SMBus-2 Data Input/Output. Refer to GPIO[19:16] Config.1&2 Registers for more details and GPIO Config.  
Tables (section 8) for input/output selections. Note: OZ998A GPIO [19:18] need 47k pull-up for normal  
operation, OZ998B doesn’t.  
GPIO[0]/  
SMIEVENT/ID[0]  
9
I/O  
TTL  
12mA  
General Purpose I/O /  
SMIEVENT  
Fully programmable GPIO that can be used for a variety of dedicated or specific functions. Pin GPIO[0] has  
an SMIEVENT output as an alternate function. GPIO[0] is set as default. It is also programmable to  
function as GPI[0] input, GPO[0] output, ALF[0] output, or ID[0] input. In addition, if this pin is configured as  
output, TTL output, Open Drain or Open collector output can be selected. Refer to GPIO Config.1&2  
Registers for more details and GPIO Config. Tables (section 8) for input/output selections.  
GPIO[1]/ID[1]  
10  
I/O  
TTL  
12mA  
General Purpose I/O  
Fully programmable GPIO that can be used for a variety of dedicated or specific functions. GPIO[1] pin  
defaults as input. It is also programmable to function as GPI[1] input, GPO[1] output, ALF[1] output, or ID[1]  
input. In addition, if this pin is configured as output, TTL output, Open Drain or Open collector output can  
be selected. Refer to GPIO Config.1&2 Registers for more details and GPIO Config. Tables (section 8) for  
input/output selections.  
GPIO[2]/  
SMBALERT#/ID[2]  
11  
I/O  
TTL  
12mA  
General Purpose I/O/  
SMBALERT#  
Fully programmable GPIO that can be used for a variety of dedicated or specific functions. Pin GPIO[2]  
defaults as input. This pin, when programmed as an alternate function, can generate the SMBALERT#  
interrupt. SMBALERT# is an interrupt service request signal to the SMBus Host which can be generated by  
all devices connected to the OZ998. Pin GPIO[2]/SMBALERT# is also programmable to function as GPI[2]  
input, GPO[2] output, ALF[2] output, or ID[2] input. In addition, if this pin is configured as output, TTL  
output, Open Drain or Open collector can be selected. Refer to GPIO Config.1&2 Registers for more  
details and GPIO Config. Tables (section 8) for I/O selections.  
OZ998-SF-2.2  
Page 3  
OZ998  
Definition  
General Purpose I/Os  
Name  
GPIO[7:3]/ID[7:3]  
Pin No.  
[17:15],  
[13:12]  
Type  
I/O  
Input  
TTL  
Drive  
12mA  
Fully programmable GPIOs that can be used for a variety of dedicated or specific functions. GPIO[7:3] pins  
default as inputs. They are programmable to function as GPI[7:3] inputs, GPO[7:3] outputs, ALF[7:3]  
outputs, or ID[7:3] inputs. In addition, if this pin is configured as output, TTL output, Open Drain or Open  
collector can be selected. Refer to GPIO Config.1&2 Registers for more details and GPIO Config. Tables  
(section 8) for input/output selections.  
GPIO[10:8]  
GPIO[11]  
[20:18]  
I/O  
TTL  
4mA  
General Purpose I/Os  
Fully programmable GPIOs that can be used for a variety of dedicated or specific functions. Pins  
GPIO[10:8] default as inputs. Pins GPIO[10:8] as inputs are programmable to generate SMI/SMB  
interrupts. They are also programmable to function as GPI[10:8] inputs, GPO[10:8] outputs. Refer to GPIO  
Config.1&2 Registers for more details and GPIO Config. Tables (section 8) for input/output selections.  
21  
I/O  
TTL  
4mA  
General Purpose I/O  
Fully programmable GPIO that can be used for a variety of dedicated or specific functions. Pin GPIO[11] is  
default as input. Pin GPIO[11] as input is programmable to generate SMI/SMB interrupts. They are also  
programmable to function as GPI[11] input, GPO[11] output. Refer to GPIO Config.1&2 Registers for more  
details and GPIO Config. Tables (section 8) for input/output selections.  
GPIO[12]/  
22  
I/O  
TTL  
4mA  
General Purpose I/O /  
SMB_SEL[0]  
Secondary SMBus Select 0  
Fully programmable GPIO that can be used for a variety of dedicated or specific functions. By default,  
GPIO[12] becomes SMB_SEL[0] input to be used to select Secondary SMBus. Pin GPIO[12] default as  
input. Pin GPIO[12] as input is programmable to generate SMI/SMB interrupts. It is also programmable to  
function as GPI[12] input, GPO[12] output. Refer to GPIO Config.1&2 Registers for more details and GPIO  
Config. Tables (section 8) for input/output selections.  
SMB_SEL[1:0]  
Selected Secondary SMBus  
None  
Secondary SMBus-1  
Secondary SMBus-2  
Secondary SMBus-3  
00  
01  
10  
11  
GPIO[13]/  
23  
I/O  
TTL  
4mA  
General Purpose I/O /  
SMB_SEL[1]  
Secondary SMBus Select 1  
Fully programmable GPIO that can be used for a variety of dedicated or specific functions. On default,  
GPIO[13] becomes SMB_SEL[1] input to be used to select Secondary SMBus. Pin GPIO[13] default as  
input. Pin GPIO[13], as input is programmable to generate SMI/SMB interrupts. It is also programmable to  
function as GPI[13] input, GPO[13] output. Refer to GPIO Config.1&2 Registers for more details and GPIO  
Config. Tables (section 8) for input/output selections.  
GPIO[14]/  
24  
I/O  
TTL  
4mA  
General Purpose I/O /  
S_SMBDATA3  
Secondary SMBus-3 Data I/O  
Fully programmable GPIO that can be used for a variety of dedicated or specific functions. Pin GPIO[14]  
default as input. Pin GPIO[14], as input is programmable to generate SMI/SMB interrupts. It is also  
programmable to function as GPI[14] input, GPO[14] outputs or secondary SMBus-3 Data Input/Output.  
Refer to GPIO Config.1&2 Registers for more details and GPIO Config. Tables (section 8) for input/output  
selections.  
GPIO[15]/  
25  
I/O  
TTL  
4mA  
General Purpose I/O /  
S_SMBCLK3  
Secondary SMBus-3 Clock I/O  
Fully programmable GPIO that can be used for a variety of dedicated or specific functions. Pin GPIO[15]  
default as input. Pin GPIO[15], as input is programmable to generate SMI/SMB interrupts. It is also  
programmable to function as GPI[15] input, GPO[15] output or secondary SMBus-3 Clock Input/Output.  
Refer to GPIO Config.1&2 Registers for more details and GPIO Config. Tables (section 8) for input/output  
selections.  
XOUT  
XIN/32KHZ  
GND  
26  
Crystal output pin. See application diagram on p.18.  
27 TTL  
O
-
-
XOUT Output  
I
-
XIN Input/32KHZ  
32KHZ input clock source. Crystal input pin as alternate. See application diagram on p.18.  
14  
Ground.  
28  
GND  
-
-
Ground  
VCC  
PWR  
-
-
3.3V/5V Power Supply  
3.3V or 5V Power Supply.  
OZ998-SF-2.2  
Page 4  
OZ998  
DC CHARACTERISTICS  
DC TABLE FOR VCC = 5.0V r 10%  
Symbol  
VCC  
VIH  
Parameter  
Power Supply Voltage  
Input HIGH Voltage  
Input LOW Voltage  
Output HIGH Voltage  
Output LOW Voltage  
Min  
4.5  
2.0  
-
2.4  
-
Max  
5.5  
-
0.8  
-
0.4  
10  
10  
Units  
V
V
V
V
V
µA  
µA  
VIl  
VOH  
VOL  
IIL  
Maximum Input Leakage Current  
Maximum Output Leakage  
-10  
-10  
IOL  
DC TABLE FOR VCC = 3.3V r 10%  
Symbol  
VCC  
VIH  
Parameter  
Power Supply Voltage  
Input HIGH Voltage  
Input LOW Voltage  
Output HIGH Voltage  
Output LOW Voltage  
Min  
3.0  
2.0  
-
2.4  
-
Max  
3.6  
-
0.8  
-
0.4  
10  
10  
Units  
V
V
V
V
V
µA  
µA  
VIl  
VOH  
VOL  
IIL  
Maximum Input Leakage Current  
Maximum Output Leakage  
-10  
-10  
IOL  
CAPACITANCE  
Symbol  
Parameter  
Units  
pF  
pF  
0 qC to 70qC  
CIN  
COUT  
CIO  
Maximum Input Capacitance  
Maximum Output Capacitance  
Maximum I/O Capacitance  
10  
10  
10  
pF  
ABSOLUTE MAXIMUM RATINGS  
Symbol  
VCC  
VIN, VOUT  
IIN  
Parameter  
DC Power Supply Voltage  
DC Input, Output Voltage  
DC Current Drain VCC and VCC  
Pins  
Value  
-0.3 to 5.5  
-0.3 to VCC + 0.3  
Units  
V
V
±25  
mA  
TSTG  
TOPER|  
°C  
°C  
Storage Temperature  
Operation Temperature  
-40 to +125  
0 to 70  
OZ998-SF-2.2  
Page 5  
OZ998  
ICC SPECIFICATIONS  
Symbol  
Parameter  
Typ  
Max  
Units  
ICC5V  
ICC3V  
ICC5V  
ICC3V  
Supply Current, VCC = 5V (when  
32KHZ input clock source is  
used)  
µA  
8
15  
Supply Current, VCC  
=
3.3V  
µA  
µA  
µA  
5
10  
200  
80  
(when 32KHZ input clock source  
is used)  
Supply Current, VCC = 5V (when  
external OSC is used based on  
configuration on p.18)  
150  
50  
Supply Current, VCC  
=
3.3V  
(when external OSC is used  
based on configuration on p.18)  
OZ998-SF-2.2  
Page 6  
OZ998  
13. OZ998 PACKAGE INFORMATION  
DIM  
INCHES  
MIN MAX  
MILLIMETERS  
MIN  
MAX  
A
A1  
B
C
D
E
e
0.084  
2.13  
SSOP  
PACKAGE  
(209 mil)  
0.002 0.010  
0.009 0.015  
0.004 0.008  
0.390 0.413  
0.197 0.220  
0.0256  
0.05  
0.22  
0.09  
9.90  
5.00  
0.25  
0.38  
0.20  
E
H
10.50  
5.60  
0.65  
H
L
α
0.291 0.323  
0.025 0.041  
7.40  
0.63  
0°  
8.20  
1.03  
8°  
0°  
8°  
e
D
C
A
B
D
A1  
L
OZ998-SF-2.2  
Page 7  
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