User Guide

Software Functional Overview
3-14 FIC M785 Service Manual
GPIO
Number
Signal Name Default I/O Notes
GPIO7 EC_SCI0 1 I 0 : PMU SCI Detect
1 : PMU SCI Not Detect
GPIO8 PM_RI0 1 I 0 : wakeup event input enable
1 : wakeup event input disable
GPIO9 N.C. -- -- --
GPIO10 MB_ID1 1 I 0 : Mother Board ID1 Select
1 : normal operation
GPIO11 PM_SLP_S10 1 O 0 : When system into S1
1 : normal operation
GPIO12 STPCPU0 1 O 0 : Stop CPU Clock
1 : normal operation
GPIO13 N.C. -- -- --
GPIO14 SPDMUX0 1
O
SM BUS Select0
GPIO15 N.C. -- -- --
GPIO16 N.C. -- -- --
GPO17 N.C. -- -- --
GPIO18 SPDMUX1 1 O SM BUS Select1
GPIO19
ICH_SMBCLK 1 O
SM BUS Clock
GPIO20 ICH_SMBDATA 1 I/O SM BUS Data
3.4.1 PMU08 GPIO Signal Description
PIN Signal I/O Normal Runtime / Wake event
GPIOA0
LID# I LID Switch Low = LCD Close.
GPIOA1
N.C. X
GPIOA2
Mail LED# O Mail LED Low = Mail Arrival
GPIOA3
QGSMI# I
ENE
KB3886
Low = Keyboard SMI
GPIOA4
PCMUTE# O Low = Mute PC speaker
GPIOA5
PSTMSK# O
Low = PCI Reset Mask, Hi = PCI
Reset Enable
GPIOA6
PCMRI# I CB1410 Low = Ring Signal from PCMCIA
GPIOA7
RI1# I Serial Port Low = Ring Signal from Serial Port
GPIOB0
N.C. X
GPIOB1
N.C X
GPIOB2
N.C. X
GPIOB3
PDCOM# O MAX3243 Low = Power down RS232
GPIOB4
N.C. X
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