NSB-7
System Module
PAMS Technical Documentation
Page 28
ã
Nokia Mobile Phones Ltd.
Issue 1 06/00
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
US
C). Contains MCU BootROM
-
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
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