Eeprom Layout (Base Unit); Scope; Introduction; Eeprom Layout - Panasonic KX-TCD725AXM Service Manual

KX-TCD725AXM

15 EEPROM LAYOUT (BASE UNIT)

15.1. Scope

The purpose of this section is to describe the layout of the EEPROM (IC9) for the TCD725 Base Unit.
The EEPROM contains hardware, software, and user specific parameters. Some parameters are set during production of the
base e.g. crystal frequency adjustment at address 0000 and 0001, some are set by the user configuration e.g. ringer volume
at address 0210, and some are set during normal use of the phone e.g. meter pulse billing at address 1040..015F.

15.2. Introduction

The base unit uses a 32k bit (4096 x 8) serial EEPROM (IC9) for storing volatile parameters. All parameters are set up before
the base leaves 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.
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. All values in this document are in hexadecimal notation.
Type Name
D default
A adjust
-
d default

15.3. EEPROM Layout

15.3.1. General Setup
Address Default
0000-01 00 4B
0002 2A
0003 00
0030-0034 FF .. FF
0035-0039 FF .. FF
003A-003E FF .. FF
003F-0043 FF .. FF
0044-0048 FF .. FF
0049-004D FF .. FF
15.3.2. MeterPulse Billing
Address Default
0140 - 0141 00 01MSB
LSB
0142-0145 00..00
0146-0149 00..00
014A-014D 00..00
0140E-0152 00..00
0153-0156 00..00
0157-0159 00..00
015A-015D 00..00
015E-015F FF..FF
Description
The EEPROM location is preset to the Default value by the eeprom default loader.
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 all 1's (byte: 0xFF, word FFFFh), i, e. it has never been set.
EEPROM location which is not set at all.
Same as D but best-guess value and/or not verified.
Name
EepromOscillator
ModulationDeviation
InitialTestmode
IPUI_1
IPUI_2
IPUI_3
IPUI_4
IPUI_5
IPUI_6
Name
MpBill.Unit
MpBill.PstnLineTotal
MpBill.Hs1
MpBill.Hs2
MpBill.Hs3
MpBill.Hs4
MpBill.Hs5
MpBill.Hs6
Freeblock0
Type
A Frequency adjustment
A Mudulation adjustment
D Used when entering testmode
D Ipui for handset 1. If set to FF .. FF the handset
is not enrolled.
D Ipui for handset 2. If set to FF .. FF the handset
is not enrolled.
D Ipui for handset 3. If set to FF .. FF the handset
is not enrolled.
D Ipui for handset 4. If set to FF .. FF the handset
is not enrolled.
D Ipui for handset 5. If set to FF .. FF the handset
is not enrolled.
D Ipui for handset 6. If set to FF .. FF the handset
is not enrolled.
Type
D Meter-pulse billing unit
D Meter-pulse billing total for PSTN line. MSB in
0160h.
D Meter-pulse billing total for HS1
D Meter-pulse billing total for HS2
D Meter-pulse billing total for HS3
D Meter-pulse billing total for HS4
D Meter-pulse billing total for HS5
D Meter-pulse billing total for HS6
- Free block 0
56
Description
Description