Panasonic KX-TCD420GS, Service Manual, Page: 82 / 129

The EEPROM contains hardware, software, and user specific parameters. Some parameters are set
during production of the handset e.g. crystal oscillator adjustment at 0000..01, some are set by the
user when configuring the handset e.g. ringer volume at 0F38, and some during normal use of the
phone e.g. redial memory at 0311..0392.
28.2. Introduction
The handset uses a 32k bit serial EEPROM (IC2) for storing volatile parameters. All parameters are set
up before the handset the factory. Some of these are vital for the operation of the hardware so a set of
default parameters is programmed before the actual hardware fine-tuning can be initiated. This
document lists all default settings with a short description.
This document lists all default parameters with a short description.
In the tables below values in a range that are similar are not repeated; i.e. Address 00 to 01 contains
the value 00 simply means that the value 00 is repeated in all addresses in the range.
Type Name Description
D default The EEPROM location is preset to the Default value by the eeprom default
loader.
A adjust
The EEPROM location is set during the production test and should not be
overwritten. The value is set by the eeprom default loader only if the location
contains 0xFF, i, e. it has never been set.
- EEPROM location which is not set at all.
28.3. EEPROM contents
28.3.1. General Setup
Address Default Name Type Description
0000-0001 00 EepromOscillator A Frequency adjustment
0002 20 ModulationDeviation A Mudulation adjustment
0030-0034 00 IPEI (ID for Handset) A IPEI
0036-003A FF PARK_1 (ID for Base 1) - PARK for registration 1
003B-003F FF PARK_2 (ID for Base 2) - PARK for registration 2
0040-0044 FF PARK_3 (ID for Base 3) - PARK for registration 3
0045-0049 FF PARK_4 (ID for Base 4) - PARK for registration 4
004A-004D FF PLI_1-PLI_4 D Pli for registration 1-4. If set to FF the
registration is deleted.
28.3.2. Signal detection (for factory use only)
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