User Guide

After Sales
Technical Documentation
System Module
THX–4
Amendment 10/97 Page 4–7
Display Module Connector J2
Pin Name Description
1 ROW1 Row 1 of keypad matrix
2 COL0 Column 0 of keypad matrix
3 ROW0 Row 0 of keypad matrix
4 COL3 Column 3 of keypad matrix
5 VBAT Battery voltage power for LED’s
6 LCD
LIGHTS
Current supply for LCD backlights
7 LCD_CLK Clock for LCD driver
8 LCD_RES Reset for LCD driver
9 XLCDEN LCD driver for chip enable
10 C_XD Command/No data
11 SCL Serial data clock
12 VL2 Supply voltage for LCD driver
13 XBUSY Busy signal from LCD driver
14 0V 0V power connection
15 SDA Serial data
16 V_LCD Negative voltage for LCD
17 EARP Earpiece connection (not used)
18 EARM Earpiece connection (not used)