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CARD-PCI/GX Hardware Manual
3.3.11 Power management
SCE8720C provides the following signals in order to achieve power supply control
complying ACPI.
Other than these signals, SCE8720C also provides signals to use BIOS ROM (ROMDIS).
Signal name
(22 pins in total)
POFF
PWSW#
STANDBY#
POWERGOOD
PME1#
PME0#
PORT4
PORT3
CPUFRQ
ROMDIS
RESERVED
36
I/O
OD
Output signal which controls ON/OFF of the power
supply. Power OFF at HIGH, and ON at LOW.
I
Input signal of the power ON/OFF switch.
OD
Output signal which represents standby status.
Standby at LOW.
I
Input power good signal which indicates that the power
is properly supplied. When this signal is LOW, the card
is initialized.
I
Wake on RING input
I
Power management input signal usually assigned to
Wake on LAN signal.
programmable General-purpose input/output signal.
(GPIO13 of PC97317)
programmable General-purpose input/output signal.
(GPIO12 of PC97317)
I
Input signal. Set it to NC with SCE8720Cxx.
I
Input signal. Disable signal of ROM inside SCE8720C.
CPU accesses the external ROM when the signal is
HIGH, and internal ROM when LOW.
---
RESERVED pin. Set it to NC.
EPSON
Function description
Rev.A
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