User Guide

RAE-6/RA-4

Nokia Customer Care 6 - Baseband Description and Troubleshooting

34 COMPANY CONFIDENTIAL Issue 1 12/04

The interconnection between the LCD module and engine is implemented with a 12-pin board-

to-board connector.

All the signals go through the hinge flex and are filtered by EMI filters.

Table 8: interface signals of CMT display.

Note! Level shifter used.

Pin #

Signal

name

(LCD)

Signal name

(Engine)

Voltage level I/O/Z Description

1 VLED- Vfb (LED

Driver)

12 / 0.4V - LED power supply (cathode)

2 VDDI V18 1.8V I,

PSU

Supply voltage for digital circuits

3 GND GND 0V - Ground

4 SDA WIRE_SDO 0 – 1.8V (LCD) I/O Bi-directional serial interface

data but only used as unidirec-

tional.1)

0 – 2.8V

(OMAP1510)

5 CSX WIRE_nSCS0 0 – 1.8V (LCD) I Chip select (active low)

0 – 2.8V

(OMAP1510)

6 GND GND 0V - Ground

7 TE - 0 – 1.8V O Tearing Effect signal

8 RESX GPIO12 0 – 1.8V (LCD) I Reset signal (active low)

0 – 2.8V

(OMAP1510)

9 SCL WIRE_SCLK 0 – 1.8V (LCD) I Serial interface clock

0 – 2.8V

(OMAP1510)

10 GND GND 0V - Ground

11 VDD V28 2.8V I,

PSU

Power supply for analogue cir-

cuits

12 VLED+ Vovp (LED

Driver)

Variable ~12V - LED power supply (anode)