List Of I/O Pin Assignments Of The I307 - Acer AL1702 Service Manual

4.5

List of I/O Pin Assignments of the I307

Pin No. Port
3 P5.0
2 P5.1
1 P5.2
42 P5.3
41 P5.4
38 P1.0
37 P1.1
20 P1.2
21 P1.3
22 P1.4
25 P1.5
29 P3.0
28 P3.1
19 P3.2
13 P3.4
14 P3.5
27 P6.0
26 P6.1
9 P6.3
31 P6.5
32 P6.6
33 P6.7
Note : Other I/O pin assignments of the I305 MST8111B
73 PWM0 BKLT_ADJ
74 PWM1 VOLUME
Page 10
Signal Name
KEY_POWER
KEY_MENU
KEY_PLUS
KEY_MINUS
KEY_DOWN
LED_G
LED_A
SCL
SDA
CSZ
HWRESET
RXD
TXD
INT
ISDA
ISCL
DDC_WP
VGA_DET
PANELVCC_EN
BKLT_EN
AUDIO_EN
MUTE
Initial
Setting
H ON/OFF monitor power
H OSD enter/exit enable
H OSD right enable
H OSD left enable
H OSD down enable
H LED green enable
H LED amber enable
H Clock of 3-wire bus for scaler
H Data of 3-wire bus for scaler
H Chip select of 3-wire bus for scaler
H Reset enable to scaler
H UART interface data IN
H UART interface data OUT
H Interrupt signal from the scaler
H EEPROM data bus
H EEPROM clock bus
L DDC EEPROM write protection
H VGA cable connected
L Panel power enable
L Back light power enable
L Audio power enable
L Audio mute enable
- Backlight brightness control
- Audio volume control
AL1702
Function