Nokia Mobile Phones NSE-5 Series Service Manual page 49

PAMS
Technical Documentation
A vibra alerting device is used for giving a silent signal to the user of an
incoming call. The device is controlled with a VibraPWM output signal
from the MAD2PR1. The vibra alert can be adjusted either by changing
the pulse width or by changing the pulse frequency. The vibra device is
inside the phone, but a special vibra battery can also be used.
Digital Control
MAD2PR1
The baseband functions are controlled by the MAD2PR1 asic, which
consists of a MCU, a system ASIC and a DSP. The GSM/PCN specific
asic is named as MAD2. There are separate controller asics in TDMA and
JDC named as MAD1 and MAD3. All the MAD2PR1 asics contain the
same core processors and similar building blocks, but differ from each
other in system specific functions, pinout and package types.
MAD2PR1 contains following building blocks:
– ARM RISC processor with both 16–bit instruction set (THUMB mode)
and 32–bit instruction set (ARM mode)
– TMS320C542 DSP core with peripherials:
– BUSC (BusController for controlling accesses from ARM to API, Sys-
tem Logic and MCU external memories, both 8– and 16–bit memories)
– System Logic
Issue 1 07/99
– API (Arm Port Interface memory) for MCU–DSP commu-
nication, DSP code download, MCU interrupt handling vec-
tors (in DSP RAM) and DSP booting
– Serial port (connection to PCM)
– Timer
– DSP memory
– CTSI (Clock, Timing, Sleep and Interrupt control)
– MCUIF (Interface to ARM via B
tROM
– DSPIF (Interface to DSP)
– MFI (Interface to COBBA_GJP 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 COB-
BA_GJP PCM Codec, LCD Driver and CCONT)
– UIF+ (roller/ slide handling)
– SIMI (SimCard interface with enhanched features)
– PUP (Parallel IO, USART and PWM control unit for vibra
and buzzer)
NSE–5
System Module
C). Contains MCU Boo-
US
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