User Guide

PAMS Technical Documentation 3. System Module
NSD-5
Issue 1 05/02 Nokia Corporation Page 41
Figure 22: The interface between battery and transceiver (|)
BTEMP Connections, IBI Accessories
All accessories that can be connected between the transceiver and the battery or that
itself contain the battery are called IBI accessories.
Either the phone or the IBI accessory can turn the other on, but both possibilities are not
allowed in the same accessory.
IBI accessory can power on the phone by pulling the BTEMP line up to 3V for at least
10ms.
BSI Connections
There is a pull-up resistor to VREF on the BSI line. A pull-down resistor is used in the bat-
tery pack (See Figure 23). Different pull-down resistance is used to indicate different
battery types. The voltage level from this resistor divider is connected to CCONT BSI A/D
converter input. The following items can be detected by using a different resistor in the
battery pack: lithium battery voltage and dummy battery (used for testing).