User Guide

Table 14 Test points

Test point Notes

J4400 SDA I2C bidirectional data

J4401 SCL I2C clock

J4402 VBAT Supply voltage for flip module

Bluetooth RF

TI BRF 6150 ROM is a low power Bluetooth RF-tranceiver module meeting Bluetooth compatibility standards

(Class 2 Bluetooth v1.2 compliant pre-qualified tranceiver system) and has the BTH/WLAN physical co-

existence interface for Nokia application.

BRF 6150 is a single chip Bluetooth device appropriate for use in Nokia mobile phone applications, where

the Nokia BB acts as a Bluetooth host interface.

Interface to RAP3G

The baseband uses RAP3G as the cellular ASIC and Helen3 as the Application processor.

This is because the BT application program runs on the Application processor in Symbian OS environment.

Audio (PCM Interface) is still connected to the cellular ASIC such that cellular audio delay is kept minimum.

The Nokia BB and BRF 6150 interface can be logically divided into audio, user data and control Interfaces.

Audio interface

Audio data is transferred using a separate interface based on PCM (Sync, In, Out, Clk).

The interface is configured by MCU software but the data transfer is done by the DSP.

Audio data is based on 8kHz sampling data – same as that used in the cellular system. The used configuration

is as shown below:

Master/Slave TI as Slave

Clock Nokia BB ASIC generates PCM_CLK

Data width 16 bits PCM_out

Sync. Frame Short PCM_Sync

Coding PCM Linear

WLAN interface CXS

Coexistence Signaling Interface [CXS] between BTH and WLAN modules is to facilitate collocation in a terminal

that has BTH and WLAN.

RM-10;RM-24

System Module Nokia Customer Care

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