HP WF1907 Service Manual page 10

3.8.5 List of I/O Pin Assignments of the I306
Pin No. Port
113 LBADC_IN3 PWR_KEYn
126 GPIO14
125 GPIO13
114 LBADC_IN2 KEY_UPn
115 LBADC_IN1 KEY_MENUn
114 LBADC_IN2 KEY_SELECTn
115 LBADC_IN1 KEY_DOWNn
86 GPIO31
122 GPIO10
123 GPIO11
50 GPO4
124 GPIO12
51 GPO0
56 GPO1
121 GPIO9
120 GPIO8
58 GPO3
57 GPO2
127 PPWR
49 PBIAS
64 GPIO16
65 GPIO17
66 GPIO18
67 GPIO19
Signal Name Initial Setting
H
LED_B L
LED_A L
H
H
H
H
HDCP_HPDn L
SCL H
SDA H
BKLT_ADJ -
DDC_WPn L
AUDIO_EN L
VOLUME L
VGA_DETn H
DVI_DETn H
UART_DO H
UART_DI H
PANELVCC_EN L
BKLT_EN L
DDC_SCL_VGA H
DDC_SDA_VGA H
DDC_SCL_DVI H
DDC_SDA_DVI H
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Function
ON/OFF LCD monitor
LED Blue enable when is H
LED amber enable when is H
OSD up/plus enable when is 2.46V
OSD enter enable when is 2.46V
OSD select/exit enable when is 2.0V
OSD down/minus enable when is 2.0V
DVI HPD enable when is L
EEPROM clock signal of IIC bus
EEPROM data signal of IIC bus
Backlight brightness control
DDC EEPROM write protection when is
L
Audio enable when is H
Audio volume
VGA cable connected when is L
DVI cable connected when is L
UART interface data OUT
UART interface data IN
Panel power enable when is H
Back light power enable when is H
DDC/CI interface for VGA
DDC/CI interface for VGA
DDC/CI interface for DVI
DDC/CI interface for DVI