Level 3 Service Manual
GALAXY ASTRAL GEO GEO WAP
Version E
Mitsubishi Electric Telecom Europe SA
Date: 04/00
ZA le Piquet 35370 Etrelles
Phone: +33 2 99 75 71 00
4/29
Fax: + 33 2 99 75 71 47
1.2.4
Memory system.
Location
Type
Data
Size
Galaxy Astral Geo
Size
Geo WAP
IC201
Flash ROM
CPUprogram code 1 MB
2MB
IC202
RAM
Data for CPU work 128 kB
128 kB
IC203
EEPROM
Data user, RF adj.
64 kB
128 kB
1.2.5
System Clock.
The system clock for the telephone is 13 MHz TCXO, generated by X600. It is processed in IC300 to
provide serial clock for LCD, EEPROM, and IC100. The clock is buffered in IC300 One-C, and then
fed to IC100 IPD as “ CPU CLK ” . It is available on pin 56 of IC100.
During Stand-By mode, the system clock is not managed from X600 TCXO but from X300 ( “ slow
clock ” at 32.768 kHz).