Digital Control; Mad2 Wd1 - Nokia NSB-7 Series Service Manual

NSB-7
System Module

Digital Control

The baseband functions are controlled by the MAD ASIC, which consists of a MCU, a sys-
tem ASIC and a DSP. MAD with the GSM/PCN specific ASIC is named to MAD2.

MAD2 WD1

MAD2 WD1 contains following building blocks:
- ARM RISC processor with both 16-bit instruction set (THUMB mode) and 32-bit
instruction set (ARM mode)
- TI Lead DSP core with peripherals:
- API (Arm Port Interface memory) for MCU-DSP communication, DSP code
download, MCU interrupt handling vectors (in DSP RAM) and DSP booting.
- Serial port (connection to PCM)
- Timer
- DSP memory
- BUSC (BusController for controlling accesses from ARM to API, System Logic
and MCU external memories, both 8- and 16-bit memories)
- System Logic
- CTSI (Clock, Timing, Sleep and Interrupt control)
- MCUIF (Interface to ARM via B
- DSPIF (Interface to DSP)
- MFI (Interface to COBBA AD/DA Converters)
- CODER (Block encoding/decoding and A51&A52 ciphering)
- AccIF (Accessory Interface)
- SCU (Synthesizer Control Unit for controlling 2 separate synthesizer)
- UIF (Keyboard interface, serial control interface for COBBA PCM Codec, LCD
Driver and CCONT)
- SIMI (SimCard interface with enhanced features)
- PUP (Parallel IO, USART and PWM control unit for vibra and buzzer)
- Flexpool
Page 28
C). Contains MCU BootROM
US
ãNokia Mobile Phones Ltd.
PAMS Technical Documentation
Issue 1 06/00