User Guide

Nokia Customer Care System Module
Company Confidential RH-21
Issue 2 07/2004  2004 Nokia Corporation. Page 27
FBUSTXO UEM Test
Pad 2
Out Dig 0/2.7 V 9k6-
115kbit/s
Fbus asynchronous serial
data output / FDL data out
<1Mbit/s
FBUSRXO Test
Pad 3
UEM In Dig 0/2.7 V 9k6-
115kbit/s
Fbus asynchronous serial
data input/FDL in, 0-8Mbit/s
depends on project
RTCBATT lines, no bus * Connector pads for Real Time Clock back up battery
VBACK UEM RTC-
BATT
In/
Out
Vsup-
ply/
Chrg
+2-3.3V For back up battery Li
6.8x1.4
2.3mAh@3.3V
GND Global GND 0
VBB, Globals instead of Bus* Regulated BB Supply Voltages
VANA UEM Out Vreg 2.78V
+-3%
80mA
max.
Disable in sleep mode
VFLASH1 UEM Out Vreg 2.78V
+-3%
70mA
max
1.5mA max. in sleep mode.
VFLASH1 is always enabled
after power on.
VFLASH2 UEM Out Vreg 2.78V
+-3%
40mA
max.
VFLASH2 is disabled by
default
VIO UEM Out Vreg 1.8V
+-4.5%
150mA
max.
1.5mA max. in sleep mode.
VIO is always enabled after
power on.
VCORE UEM Out Vreg 1.0-1.8V
+-5%
200mA
max.
200 uA max. in sleep mode
VBACK UEM In/
Out
Vreg 3.0 V No external use, only for
RTC battery charging/dis-
charging.
RIP
Signal
name
Connected
from - to
UEM I/O
Signal Properties
A/D Levels-Freq./
Timing resolution
Description / Notes