User Guide

Battery interface

The battery interface supports a 3-pole battery interface. The interface consists of three connectors: VBAT,

BSI and GND.

The BSI line is used to recognize the battery capacity by a battery internal pull down resistor.

Figure 67 Battery pin order

MicroSD interface

The MicroSD card interface is electrically and functionally compatible with SD card interface.

MicroSD card interface is a 4-bit serial IF connected to application processor. IF includes 1.8V-2.85V level

shifter, 2.85V LDO regulator and ASIP (combined into one package) . There is an internal switch in the card

reader for card presence and removal detection.

Figure 68 MicroSD card interface

Table 19 MicroSD interface

Pin signal I/O Engine

connection

Notes

1 DAT2 <-> N5200

2 CD/DAT3 <-> N5200

3 CMD <-> N5200

4 VDD -> N5200

5 CLK <-> N5200

RM-208

System Module Nokia Customer Care

Issue 1 COMPANY CONFIDENTIAL Page 9 –11