Intelligent Manager Smart Multi-DIMM Selector SMBus, version
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OZ998
Intelligent Manager
Smart Multi-DIMM Selector
SMBus, version 1.0, compliant Intel Protected Storage support Support Pentium x86-based designs Support SMBus Q-Buffering PWRGD Support SMBus selector dual/triple DIMMs 32KHZ input clock Crystal input Support different power planes bytes scratch registers possible edge-sensitive programmable GPIOs device possible Open Drain, Open Collector outputs Programmable addresses cascaded OZ998s Supports 3.3V operation Supports tolerant LVTTL inputs (OZ998B) power hardware-driven speaker alarm outputs SMBALERT# event outputs programmable interrupt inputs event SMBALERT# Auto Flash (ALF) programmable outputs with duty cycles
GENERAL DESCRIPTION
O2Micro's OZ998 Multi-DIMM Selector supports switching between primary SMBus other secondary SMBus. This function particularly useful DIMM devices support Intel's (Preboot Authentication Service). addition, OZ998 configured support different power planes with different sets General Purpose Input/Output (GPIO) signals, which supplements enhances power management capability chipsets, commonly found ACPI (Advanced Configuration Power Interface) subsystem. possible GPIOs available device, among those, GPIO[15:8] programmable either positive negative-edged triggers generate SMIEVENT/SMBALERT# system. GPIO[7:0] programmable either regular level output, open drain open collector output. support over GPIOs through cascading multiple OZ998 devices, configure each individual OZ998 device Auto Flash (ALF) available drive speaker programmable frequency. OZ998 packaged profile, small SSOP.
ORDERING INFORMATION
OZ998S SSOP
07/13/00 ©Copyright 2000 O2Micro
OZ998-SF-2.2 Rights Reserved
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OZ998
DIAGRAM
OZ998
P_SMBCLK P_SMBDATA PWRGD RESET# GPIO[16]/S_SMBCLK1 GPIO[17]/S_SMBDATA1 GPIO[18]/S_SMBCLK2 GPIO[19]/S_SMBDATA2 GPIO[0]/SMIEVENT/ID[0] GPIO[1]/ID[1] GPIO[2]/SMBALERT#/ID[2] GPIO[3]/ID[3] GPIO[4]/ID[4] XIN/32KHZ XOUT GPIO[15]/S_SMBCLK3 GPIO[14]/S_SMBDATA3 GPIO[13]/SMB_SEL[1] GPIO[12]/SMB_SEL[0] GPIO[11] GPIO[10] GPIO[9] GPIO[8] GPIO[7]/ID[7] GPIO[6]/ID[6] GPIO[5]/ID[5]
OZ998-SF-2.2
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OZ998
DESCRIPTION
Name P_SMBCLK P_SMBDATA PWRGD Type Input Drive Definition Primary SMBus Clock Input 3.3V/5V Ext-PU Primary SMBus Clock Input SMBus protocol communication. Primary SMBus Data 3.3V/5V Ext-PU 12mA Primary SMBus Data Input/Output SMBus protocol communication. Host System Power Good This indicates that host system's power, including Core Logic chipsets, stable. Before host system's power stable, this input will tri-state output pins, GPO[19:8], from OZ998 while GPO[7:0] will maintain original value. Upon PWRGD going Low, Secondary SMBus will disconnected from Primary SMBus. Reset This active will reset OZ998. General Purpose I/O/ Secondary SMBus-1 Clock Fully programmable GPIO that used variety dedicated specific functions. GPIO[16] defaulted input. programmable function GPI[16] input, GPO[16] output secondary SMBus-1 Clock Input/Output. Refer GPIO[19:16] Config.1&2 Registers more details GPIO Config. Tables (section input/output selections. General Purpose I/O/ Secondary SMBus-1 Data Fully programmable GPIO that used variety dedicated specific functions. GPIO[17] defaulted input. programmable function GPI[17] input, GPO[17] output secondary SMBus-1 Data Input/Output. Refer GPIO[19:16] Config.1&2 Registers more details GPIO Config. Tables (section input/output selections. General Purpose I/O/ Secondary SMBus-2 Clock Fully programmable GPIO that used variety dedicated specific functions. GPIO[18] defaulted input. programmable function GPI[18] input, GPO[18] output secondary SMBus-2 Clock Input/Output. Refer GPIO[19:16] Config.1&2 Registers more details GPIO Config. Tables (section input/output selections. Note: OZ998A GPIO [19:18] need pull-up normal operation, OZ998B doesn't. General Purpose Secondary SMBus-2 Data Fully programmable GPIO that used variety dedicated specific functions. GPIO[19] defaulted input. programmable function GPI[19] input, GPO[19] output secondary SMBus-2 Data Input/Output. Refer GPIO[19:16] Config.1&2 Registers more details GPIO Config. Tables (section input/output selections. Note: OZ998A GPIO [19:18] need pull-up normal operation, OZ998B doesn't. General Purpose 12mA SMIEVENT Fully programmable GPIO that used variety dedicated specific functions. GPIO[0] SMIEVENT output alternate function. GPIO[0] default. also programmable function GPI[0] input, GPO[0] output, ALF[0] output, ID[0] input. addition, this configured output, output, Open Drain Open collector output selected. Refer GPIO Config.1&2 Registers more details GPIO Config. Tables (section input/output selections. General Purpose 12mA
RESET# GPIO[16]/ S_SMBCLK1
GPIO[17]/ S_SMBDATA1
GPIO[18]/ S_SMBCLK2
GPIO[19]/ S_SMBDATA2
GPIO[0]/ SMIEVENT/ID[0]
GPIO[1]/ID[1]
GPIO[2]/ SMBALERT#/ID[2]
Fully programmable GPIO that used variety dedicated specific functions. GPIO[1] defaults input. also programmable function GPI[1] input, GPO[1] output, ALF[1] output, ID[1] input. addition, this configured output, output, Open Drain Open collector output selected. Refer GPIO Config.1&2 Registers more details GPIO Config. Tables (section input/output selections. General Purpose I/O/ 12mA SMBALERT# Fully programmable GPIO that used variety dedicated specific functions. GPIO[2] defaults input. This pin, when programmed alternate function, generate SMBALERT# interrupt. SMBALERT# interrupt service request signal SMBus Host which generated devices connected OZ998. GPIO[2]/SMBALERT# also programmable function GPI[2] input, GPO[2] output, ALF[2] output, ID[2] input. addition, this configured output, output, Open Drain Open collector selected. Refer GPIO Config.1&2 Registers more details GPIO Config. Tables (section selections.
OZ998-SF-2.2
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OZ998
Name GPIO[7:3]/ID[7:3] Definition Type Input Drive General Purpose I/Os [17:15], 12mA [13:12] Fully programmable GPIOs that used variety dedicated specific functions. GPIO[7:3] pins default inputs. They programmable function GPI[7:3] inputs, GPO[7:3] outputs, ALF[7:3] outputs, ID[7:3] inputs. addition, this configured output, output, Open Drain Open collector selected. Refer GPIO Config.1&2 Registers more details GPIO Config. Tables (section input/output selections. General Purpose I/Os [20:18] Fully programmable GPIOs that used variety dedicated specific functions. Pins GPIO[10:8] default inputs. Pins GPIO[10:8] inputs programmable generate SMI/SMB interrupts. They also programmable function GPI[10:8] inputs, GPO[10:8] outputs. Refer GPIO Config.1&2 Registers more details GPIO Config. Tables (section input/output selections. General Purpose Fully programmable GPIO that used variety dedicated specific functions. GPIO[11] default input. GPIO[11] input programmable generate SMI/SMB interrupts. They also programmable function GPI[11] input, GPO[11] output. Refer GPIO Config.1&2 Registers more details GPIO Config. Tables (section input/output selections. General Purpose Secondary SMBus Select Fully programmable GPIO that used variety dedicated specific functions. default, GPIO[12] becomes SMB_SEL[0] input used select Secondary SMBus. GPIO[12] default input. GPIO[12] input programmable generate SMI/SMB interrupts. also programmable function GPI[12] input, GPO[12] output. Refer GPIO Config.1&2 Registers more details GPIO Config. Tables (section input/output selections. SMB_SEL[1:0] GPIO[13]/ SMB_SEL[1] Selected Secondary SMBus None Secondary SMBus-1 Secondary SMBus-2 Secondary SMBus-3
GPIO[10:8]
GPIO[11]
GPIO[12]/ SMB_SEL[0]
GPIO[14]/ S_SMBDATA3
GPIO[15]/ S_SMBCLK3
XOUT XIN/32KHZ
General Purpose Secondary SMBus Select Fully programmable GPIO that used variety dedicated specific functions. default, GPIO[13] becomes SMB_SEL[1] input used select Secondary SMBus. GPIO[13] default input. GPIO[13], input programmable generate SMI/SMB interrupts. also programmable function GPI[13] input, GPO[13] output. Refer GPIO Config.1&2 Registers more details GPIO Config. Tables (section input/output selections. General Purpose Secondary SMBus-3 Data Fully programmable GPIO that used variety dedicated specific functions. GPIO[14] default input. GPIO[14], input programmable generate SMI/SMB interrupts. also programmable function GPI[14] input, GPO[14] outputs secondary SMBus-3 Data Input/Output. Refer GPIO Config.1&2 Registers more details GPIO Config. Tables (section input/output selections. General Purpose Secondary SMBus-3 Clock Fully programmable GPIO that used variety dedicated specific functions. GPIO[15] default input. GPIO[15], input programmable generate SMI/SMB interrupts. also programmable function GPI[15] input, GPO[15] output secondary SMBus-3 Clock Input/Output. Refer GPIO Config.1&2 Registers more details GPIO Config. Tables (section input/output selections. XOUT Output Crystal output pin. application diagram p.18. Input/32KHZ 32KHZ input clock source. Crystal input alternate. application diagram p.18. Ground Ground. 3.3V/5V Power Supply 3.3V Power Supply.
OZ998-SF-2.2
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OZ998
CHARACTERISTICS
TABLE 5.0V
Symbol Parameter Power Supply Voltage Input HIGH Voltage Input Voltage Output HIGH Voltage Output Voltage Maximum Input Leakage Current Maximum Output Leakage Units
TABLE 3.3V
Symbol Parameter Power Supply Voltage Input HIGH Voltage Input Voltage Output HIGH Voltage Output Voltage Maximum Input Leakage Current Maximum Output Leakage Units
CAPACITANCE
Symbol COUT Parameter Maximum Input Capacitance Maximum Output Capacitance Maximum Capacitance 70qC Units
ABSOLUTE MAXIMUM RATINGS
Symbol VIN, VOUT TSTG TOPER| Parameter Power Supply Voltage Input, Output Voltage Current Drain Pins Storage Temperature Operation Temperature Value -0.3 -0.3 +125 Units
OZ998-SF-2.2
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OZ998
SPECIFICATIONS
Symbol ICC5V Parameter Supply Current, (when 32KHZ input clock source used) Supply Current, 3.3V (when 32KHZ input clock source used) Supply Current, (when external used based configuration p.18) Supply Current, 3.3V (when external used based configuration p.18) Units
ICC3V
ICC5V
ICC3V
OZ998-SF-2.2
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OZ998
OZ998 PACKAGE INFORMATION
SSOP PACKAGE (209 mil)
INCHES 0.084 0.002 0.010 0.009 0.015 0.004 0.008 0.390 0.413 0.197 0.220 0.0256 0.291 0.323 0.025 0.041
MILLIMETERS 2.13 0.05 0.25 0.22 0.38 0.09 0.20 9.90 10.50 5.00 5.60 0.65 7.40 8.20 0.63 1.03
OZ998-SF-2.2
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