User Guide

PAMS
Technical Documentation
NSE–8/9
System Module
Page 2– 47
Issue 1 07/99
Vsim
There is a switched mode supply for SIM–interface. The SIM voltage is
selected via serial IO. The 5V SMR can be switched on independently of
the SIM voltage selection, but can’t be switched off when VSIM voltage
value is set to 5V.
Table 21. Electrical characteristics of VSIM and V5V
Characteristics Condition Min Typ Max Unit
Output voltage VSIM Over temperature
Over current
2.8
4.8
3.0
5.0
3.2
5.2
V
Output voltage V5V Over temp & cur-
rent
4.8 5.0 5.2 V
Output voltage V5V_2 Over temperature 5.0 6.0 V
Output current VSIM Continuous DC 30 *) mA
Output current V5V Continuous DC 30 *) mA
current consumption
VSIM
on
sleep
200
100
330
150
uA
uA
NOTE: VSIM and V5V can give together a total of 30mA.
In the next figure the principle of the SMR / VSIM–functions is shown.
V5V
CCONT
V5V_4
V5V_3
V5V_2
Vdc_out
5V
5V reg
VSIM
5/3V
V104
C134
VSIM
C136
C132C137
Figure 12. Principle of SMR power Functions