Display Board Connector (X12) - GE TruSat Technical Reference Manual

TruSat Technical Reference Manual

Display board connector (X12)

3–8
Pin # Signal Name
1 V_ON
2 GND
3 BACKLIGHT_CUR
4 BACKLIGHT_CUR
5 BACKLIGHT_RET_CUR
6 BACKLIGHT_RET_CUR
7 BATT+
8 GND
__________
9
LCD_EN
10 GND
11 GRN_AC_LED
12 GND
13 SPARE_KEY0
14 GND
15 SPARE_KEY1
16 GND
17 I2C_SDAT
18 GND
19 I2C_SCLK
20 GND
21 ALARM_SW
22 GND
23 ON/OFF
24 GND
25 ALARM_LED_RED
26 GND
27 ALARM_LED_YEL
28 GND
29 V_ON
30 GND
I/O Description
PWR +3 V regulated voltage from DC line
GND Non-isolated ground
O Backlight supply current
O Backlight supply current
I Backlight return current
I Backlight return current
PWR Battery voltage, isolated by ferrite
GND Non-isolated ground
O Enable signal for Display board regulator
GND Non-isolated ground
O Supply voltage for DC line power LED
GND Non-isolated ground
I/O Unused
GND Non-isolated ground
I/O Unused
GND Non-isolated ground
2
O I C bus, serial data
GND Non-isolated ground
2
O I C bus, serial clock
GND Non-isolated ground
I Alarm button signal, active high
GND Non-isolated ground
I Power button signal, active low
GND Non-isolated ground
O Alarm LED, red
GND Non-isolated ground
O Alarm LED, yellow
GND Non-isolated ground
PWR +3V regulated voltage from DC line
GND Non-isolated ground