NEC Barracuda Service Manual page 36

1.2.4 GPIO Table:
GPIO
Function Name
Name
GPIO-0 BTN_PWR#
GPIO-1 KEY_PRESS#
GPIO-2 LCD_G3
GPIO-3 LCD_G4
GPIO-4 LCD_G5
GPIO-5 LCD_R1
GPIO-6 LCD_R2
GPIO-7 LCD_R3
GPIO-8 LCD_R4
GPIO-9 LCD_R5
GPIO-10 SSP_TXD
GPIO-11 SSP_RXD
GPIO-12 CLK_SSP
GPIO-13 SSP_SFRM
GPIO-14 AC_IN#
GPIO-15 DCD#_WAKE
GPIO-16 CRADLE_IN
GPIO-17 GAUGE1
GPIO-18 GAUGE2
GPIO-19 CLK_UDA
GPIO-20 BAT_FAULT_EN
Barracuda PDA Maintenance
I/O H/L
Pin active
I L
I L
O
O
O
O
O
O
O
O
O
I
O
O
I L
I H
I H
I/O H/L
I/O H/L
I H/L
O H
Sleep
mode Description
state
ACT Power button to control system run/sleep
and backlight ON/OFF
ACT Button / Switch press detection
L LCD data output
L LCD data output
L LCD data output
L LCD data output
L LCD data output
L LCD data output
L LCD data output
L LCD data output
L SSP_UDA1341_TXD
L SSP_UDA1341_RXD
L SSP_UDA1341_SCLK
L SSP_UDA1341_SFRM
ACT AC plug-in indication
ACT Serial port DCD signal , can wake up
system when in sleep mode
ACT Detect PDA plug into cradle
Gauge for main battery
Gauge for Sled battery
L Extend Audio clock 11.2896MHz
L Enable hardware battery fault if pass to
SA1110 BAT_FAULT
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