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UP-X200
I/O
– 11 –
CHAPTER 8. I/O
8-1. PXA255 GPIO
Terminal names :
PXA255 terminal names
Signal names :
UP-X200 signal names
DIR:
Input/output direction seen from PXA255
ACT:
Active polarity
OFF:
Terminal level when off
Interruption :
Presence/absence of interruption
Function/description : Description of signal function
PXA255 (CPU GPIO)
Terminal Name
Signal Name
Normal
OFF
Inter-
ruption
End
Terminal
Function/Description
DIR
ACT.
GPIO-0
WAKE_UP#
I
L
Yes
Input of OR condition of ON key, ACIN
0: interrupt factor detected 1: interrupt factor not detected
0: interrupt factor detected 1: interrupt factor not detected
GPIO-1
GPIO_RESET#
I
L
Yes
GPIO reset input
0: reset input 1: operating normally
0: reset input 1: operating normally
GPIO-2
AC_IN#
I
L
ACIN input
0: AC detected 1: AC not detected
0: AC detected 1: AC not detected
GPIO-3
AUD_IRQ#
I
L
Yes
WM9712 IRQ input
0: Interruption factor exists 1: Interruption factor does not exist
0: Interruption factor exists 1: Interruption factor does not exist
GPIO-4
TC6393_EN
O
H
L
TC6393 enable signal
0 : OFF 1 : ON
0 : OFF 1 : ON
GPIO-5
GA_STBY#
O
L
L
ZEN0599 enable signal
GPIO-6
SD_CLK
O
L
SD card clock output
0 : OFF 1 : ON
0 : OFF 1 : ON
GPIO-7
RTC_INT#
I
L
Yes
RTC interruption input
0: Interruption factor exists 1: Interruption factor does not exist
0: Interruption factor exists 1: Interruption factor does not exist
GPIO-8
SD_CS#
O
L
SD card chip selection output
0 : selected 1 : not selected
0 : selected 1 : not selected
GPIO-9
SD_DET#
I
L
Yes
SD card insertion detection input
0: card detected 1: card not detected
0: card detected 1: card not detected
GPIO-10
SD_INT#
I
L
Yes
SD card IRQ input
0: Interruption factor exists 1: Interruption factor does not exist
0: Interruption factor exists 1: Interruption factor does not exist
GPIO-11
3R68M_OUT
O
L
3.69MHz clock output
GPIO-12
BAT1_CRG#
I
L
Yes
Charge status input
0: charging 1: not charging
0: charging 1: not charging
GPIO-13
CF_IRQ#
I
L
Yes
CF card gate array IRQ input
0: Interruption factor exists 1: Interruption factor does not exist
0: Interruption factor exists 1: Interruption factor does not exist
GPIO-14
BAT0_CRG#
I
L
Yes
Charge status input
0: charging 1: not charging
0: charging 1: not charging
GPIO-15
TC6393_INT#
I
L
L
LCDC gate array IRQ input
0: Interruption factor exists
1: Interruption factor does not exist Interruption masked and changed
AgLAh output only when OFF.
0: Interruption factor exists
1: Interruption factor does not exist Interruption masked and changed
AgLAh output only when OFF.
GPIO-16
BUZZER_OUT
I
H
L
Buzzer drive PWM signal output
GPIO-17
MAIN_BATT_L/B
I
L
Detection of fatal level of main battery voltage
0: main battery fatal 1:main battery has remaining capacity
0: main battery fatal 1:main battery has remaining capacity
GPIO-18
TC6393_RDY#
I
L
LCDC gate array RDY signal input Switched to L output only when off.
GPIO-19
GP_ON_RST#
O
L
H
GPIO reset signal output 10mS width L signal output when reset.
GPIO-20
EAR_IN
I
H
Headphone insertion detection signal input
0: earphone/headphone detected 1: earphone/headphone not
detected
0: earphone/headphone detected 1: earphone/headphone not
detected
GPIO-21
CF_PRDY#
I
L
CF card IRQ signal input
0: Interruption factor exists 1: Interruption factor does not exist
0: Interruption factor exists 1: Interruption factor does not exist
GPIO-22
ON_KEY#
I
L
Activated by AND of ON key input, GPIO 0
0: key pressed 1: key not pressed
0: key pressed 1: key not pressed
GPIO-23
RTC_SCLK
O
L
Clock output for external RTC
GPIO-24
RTC_CE
O
H
L
External RTC selection output Operates by GPIO
0: Not selected 1: Selected
0: Not selected 1: Selected
GPIO-25
RTC_SI
O
L
External RTC data output
GPIO-26
RTC_SO
I
External RTC data input
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