32. EEPROM LAYOUT (BASE UNIT)
32.1. Scope
The purpose of this section is to describe the layout of the EEPROM (IC1) for the KX-TCD400
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 0220, and some are set
during normal use of the phone e.g. meter pulse billing at address 0140..015F.
32.2. Introduction
The base unit uses a 128K bit (128 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
Description
D
default
The EEPROM location is preset to the Default value by the eeprom default
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 all 1’s (byte: 0xFF, word FFFFh), i, e. it has never been set.
-
EEPROM location which is not set at all.
d
default
Same as D but best-guess value and/or not verified.
Country
Setting
x
Default - no specific country setting, so revert to default value
32.3. EEPROM Layout
32.3.1. General Setup
70
Summary of Contents for KX-A140EXC
Page 46: ...18 FREQUENCY TABLE MHz 46 ...
Page 52: ...24 CPU DATA BASE UNIT 24 1 IC2 BBIC 52 ...
Page 56: ...45 MICP A I 56 ...
Page 60: ...60 ...
Page 61: ...28 CABINET AND ELECTRICAL PARTS LOCATION HANDSET 29 ACCESSORIES AND PACKING MATERIALS 61 ...
Page 62: ...30 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 30 1 Base Unit 30 2 Handset 62 ...
Page 91: ...4 1 5 8 PbF 1 28 18 IC3 IC2 IC1 11 64 1 16 17 32 49 48 33 Marked ...
Page 93: ...Marked PbF IC1 IC2 100 80 5 8 4 1 50 51 30 31 1 11 18 1 28 IC3 ...