Nokia NSE-6 SERIES Service Manual page 45

PAMS
Technical Documentation
The MAD2 operates from a 13 MHz system clock, which is generated
from the 13Mhz VCXO frequency. The MAD2 supplies a 6,5MHz or a
13MHz internal clock for the MCU and system logic blocks and a 13MHz
clock for the DSP, where it is multiplied to 52 MHz DSP clock. The system
clock can be stopped for a system sleep mode by disabling the VCXO
supply power from the CCONT regulator output. The CCONT provides a
32kHz sleep clock for internal use and to the MAD2, which is used for the
sleep mode timing. The sleep clock is active when there is a battery volt-
age available i.e. always when the battery is connected.
Pin Pin Name
N:o
B1 MCUGenOut5
C2 MCUGenOut4
C1 LEADGND
D3 MCUGenOut3
D2 VCC
D1 MCUGenOut2
E3 MCUGenOut1
E2 MCUGenOut0
E1 Col4
Original 08/98
– 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 enhanched features)
– PUP (Parallel IO, USART and PWM control unit for vibra
and buzzer)
Pin Connected Drive
Type to/from req.
O Audio
O N101
O
O
O MCU
memory
O
I/O UIF
Reset Note
State
mA
2 0
2 0
2 0
IO VCC in
3325c10
2 0
2 0
2 1 LoByteSelX
in 16–bit
mode
2 Input program-
mable pullup
PR0201
NSE–6
System Module
Explanation
MCU General
purpose output
port
MCU General
purpose output
port
Lead Ground
MCU General
purpose output
port
Power
MCU General
purpose output
port
MCU General
purpose output
port
MCU General
purpose output
port
I/O line for key-
board column 4
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