Bluetooth; Bt102 Flash Programming - Nokia 616 Service Manual

TFE-4/RV-1
TF4 Technical Information
The MCU consist of a 16/32–bit RISC core (ARM7). The block has a small ROM (768x32
bits) for MCU boot code. It interfaces to DSP through the 8Mbit PDRAM. The MCU has it
own sectors in the RAM as well as the DSP. RAM blocks or sectors are divided into the
following:
4 x 64Kbytes for the DSP and MCU.
4 x 64KB Banks, MCU only.
2 x 4KB Banks, for the DSP, and MCU.
The rest of the PDRAM is used for program code, mainly GPRS SW.

Bluetooth

TF4 has a Bluetooth module BT102 that receives and transmit at 2.4GHz. This module
enables the phone to communicate via a radio link with other Bluetooth units e.g. head-
sets, carkits or printers or to use a linked phone via SAP-link as remote SIM-card. The
Bluetooth module is itself made as a multilayer PWB – covering all the needed Asics and
discrete components – with a shielding frame- and lid. The module is soldered onto the
phone PWB in the same way as other SMD components.

BT102 Flash programming

The Bluetooth MCM SW needs to be programmed when the module is assembled into the
phone. This is implemented by interleaving so that code data is being transferred to the
BT102 while the main flash is performing the internal programming of the phone SW.
The figure below illustrates the set-up used for BT102 flash programming.
MBUS
FBUS-Tx
Prommer
FBUS-Rx
Page 8b-16
Company Confidential
UEM
Level shift
MBUS
FBUS-Tx
FBUS-Rx
Figure 6: BT102 flash programming
Copyright © 2005 Nokia Corporation.
Company Confidential
Nokia Customer Care
UPP
CBUS-Clk
CBUS-Data
CBUS-ENx
LPRFINTREQ
Men IF
Issue 2.0 Mar/2005
BT102
Main Flash