Product specifications

Design Guide - VT82C694X Apollo Pro133 with VT82C686A
Preliminary Revision 0.5, November 19, 1999 Signal Connectivity and Design Checklist
89
Technologies, Inc.
We ConnectWe Connect
POWER MANAGEMENT
Signal Name I/O Connection
PME#/THRM/GPI5
I
10K ohm pull-up to 3VSB if the function is not applied.
PWRBTN#
I
Connect to Power Button circuitry.
SLPBTN#/IRQ6/GPI4
I
10K ohm pull-up to VCC3 if the function is not applied.
RSMRST
I
Connect to Resume Reset circuitry.
EXTSMI#
IOD
10K ohm pull-up to 3VSB if the function is not applied.
SMBALRT#/GPI6
I
10K ohm pull-up to 3VSB if the function is not applied.
LID/GP13
I
10K ohm pull-up to 3VSB if the function is not applied.
RING#/GP17
I
Connected to external modem circuitry to allow the system to be re-activated by a received
phone call. 10K ohm pull-up to 3VSB.
BATLOW#/GP12 I 10K ohm pull-up to 3VSB if the function is not applied.
CPUSTP#/GPO4
O
Connect to the system clock synthesizer to disable the CPU clock outputs if the function is
applied. Otherwise, no connect.
PCISTP#/GPO5
O
Connect to the system clock synthesizer to disable the PCI clock outputs if the function is
applied. Otherwise, no connect.
SUSA#/GPO1
O
10K ohm pull-up to 3VSB if the function is not applied.
SUSB#/GPO2
O
10K ohm pull-up to 3VSB if the function is not applied.
SUSC# O
Connect to ATX Power On circuitry.
SUSST1#/GPO6
O
Connect to VT82C694X. 10K ohm pull-up to 3VSB.
SUSCLK O
10K ohm pull-up to 3VSB
RESET AND CLOCKS
Signal Name I/O Connection
PWRGD
I Connect to VT82C694X and Power Good circuitry.
PCIRST#
O Connect to PCI slots and PCI devices.
RSTDRV
O Connected to VT82C694X and IDE connectors through a 74F240 inverter IC. And direct
connect to ISA slots not through inverter.
OSC
I Connect to the 14.318MHz clock output of the system clock synthesizer.
BCLK
O Connected to ISA slots through corresponding 33 ohm series resistors.
RTCX1
I Connect to a 32.768KHz (RTC) crystal circuitry.
RTCX2
O Connect to a 32.768KHz (RTC) crystal circuitry.
POWER AND GROUND
Signal Name I/O Connection
VCC
P Connect to VCC3.
VCCSUS
P Connect to 3VSB.
VCCHWM
P Connected to VCC3 through a ferrite bead.
GNDHWM
P Connected to ground through a ferrite bead.
VCCUSB
P Connected to VCC3 through a ferrite bead.
GNDUSB
P Connected to ground through a ferrite bead.
VBAT
P Connect to battery circuitry.
GND
P Connect to digital ground