User Guide

PAMS Technical Documentation System Module
NSB-5
Issue 1 03/01 Nokia Mobile Phones Ltd. Page 49
IBI power–on by phone
Phone can power the IBI accessory on by pulling the BTEMP line up by MCUGenIO4 of
MAD2. BTEMP measurement is not possible during this time.
The accessory is commanded back to power–off by MBUS message.
Figure 14: IBI power on
BATTERY
100k
VREF
TRANSCEIVER
BTEMP
GND
BSI
VBAT
1k
MAD
BTEMP
CCONT
VIBRAPWM
10k
R
T
NTC
MCUGenIO4
2k2
R214
C105
10n
47k
Vibra
10n
22k
100n
100n
M
VB
10k
220k
4k7
3x3Ru