User Guide

RH-26
2 - System Module CCS Technical Documentation
Page 14 ©Nokia Corporation Issue 1 02/04
External signals and connections
Table 10: UI connector
Pin Signal Min Nom Max Condition Note
16 VDDI 1.72V 1.8V 1.88V Logic voltage supply
Connected to VIO
15 XRES 0.7*VDDI
0
VDDI
0.3*VDDI
Logic ’1’
Logic ’0’
Reset
Active low
1us t
rw
Reset active
14 SDA 0.7*VDDI
0
VDDI
0.3*VDDI
Logic ’1’
Logic ’0’
Serial data
100ns t
sds
Data setup time
100ns t
sdh
Data hold time
13 SCLK 0.7*VDDI
0
VDDI
0.3*VDDI
6.5MHz
Logic ’1’
Logic ’0’
Max frequency
Serial clock input
250ns t
scyc
Clock cycle
100ns t
shw
Clock high
100ns t
slw
Clock low
12 CXS 0.7*VDDI
0
VDDI
0.3*VDDI
Logic ’1’
Logic ’0’
Chip select
Active low
60ns t
css
CXS low before SCLK rising
edge
100ns t
csh
CXS low after SCLK rising edge
11 GND 0V
10 GND 0V
9 GND 0V
8 GND 0V
7 GND 0V
6 GND 0V
5 VDD VDD 2.70V 2.78V 2.86V Supply Voltage.
Connected to VFLASH1
4 GND 0V
3 GND 0V
2 VLED- 0V
0.5V
LED off
LED on
Feedback Voltage to LED Driver