User Guide

PAMS
System Module DB6
NHB–3
Technical Documentation
Original 26/97
Page 4–5
Interconnection Diagram
LCD
DRIVER
DSP
AUDIO
1024K x 8
FLASH
32K x 8
SRAM
M2 BUS
Interface
A4:0
A19:16
D7:0
A14:0,D7:0
ext
mem
ear
mic
sio
LCD
E
2
PROM
8K X 8
PSL+
CHRGR
io
UIF–module
FLASH
LOAD
MCU
12 bit parallel +
8 x control
A17:0,D7:0
A19:0,D7:0
LCD
A5:0,
D15:0
A12:0,D7:0
sio
sio
32K x 16
SRAM
A14:0,
D15:0
ASIC
io
ext mem
sio
RFI
RF
UIF–module
xearxmic
UIM CARD
READER
io
sio
System
connector
dbus
Technical Specifications
Modes of Operation
There are four different operation modes
– active mode
– idle mode
– power off mode
– local mode
In the active state all circuits are powered and part of the module may be in idle
mode.
The module is usually in the idle mode when there is no call and the phone is in
SERV. In the idle mode circuits are reset, powered down and clocks are
stopped or the frequency reduced. All the clocks except the main clock from
VCTCXO can be stopped in that mode. Whether the UIM clock is stopped or
not depends on the network and UIM card type.