Internal Interfaces - Nokia RX-44 Service Manual

RX-44
System Module
Charger Interface
Pin No
1 CHARGE
2 GND

Internal interfaces

LCD interface
X1001 in main flex connected to display frame buffer.
No. Name
1 TP
2 TP
3 GND
4 D2+
5 D2-
6 GND
7 D1+
8 D1-
9 GND
10 Clk+
11 Clk-
12 GND
13 D0+
14 D0-
15 GND
16 VDD
17 VDDI
18 SCL
19 DOUT
20 DIN
21 CSX
22 RESX
23 GND
24 LED2+
Issue 1
Table 20 Charging connector
Pin Name Description
Charger input
Ground
I/O
Output
Output
Ground
Input
Input
Ground
Input
Input
Ground
Input
Input
Ground
Input
Input
Ground
Supply
Supply
Input
Output
Input
Input
Input
Ground
LED
COMPANY CONFIDENTIAL
Copyright © 2007 Nokia. All rights reserved.
Voltage levels,
current
0-9V, 0.85A Center pin
0.85A
Function
Touch panel analog signal
Touch panel analog signal
Ground
Data bus
Data bus
Ground
Data bus
Data bus
Ground
CDP Clock Positive
CDP Clock Negative
Ground
Data bus
Data bus
Ground
Logic supply (1.8V)
Analog supply (2.8V)
Serial clock
Serial data out
Serial data in
Chip select
Reset
Ground
LED current source 2
Comment
Page 7 –23