Panasonic KX-TCA150EXV, Service Manual, Page: 90 / 147

Pin
No
Description I/O Connection at Normal mode at Reset
80 VSS - - - -
Note:
JACK DETECTION; Detect if a Headset is inserted into the JACK or not. Without a Headset, 1.5V
is measured at pin 23, while with a Headset, 0V is measured at pin 23.
29. EEPROM LAYOUT (BASE UNIT)
29.1. Scope
The purpose of this section is to describe the layout of the EEPROM (IC3) for the KX-TCD505
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 0286, some are
set by the user configuration e.g. ringer volume at address 02C5, and some are set during
normal use of the phone e.g. Caller ID data at address 096A..0FDB.
29.2. Introduction
The base unit uses a 32K bit serial EEPROM (IC3) 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.
Initial Type Description
F The data initialized by only F command
0 The data initialized by F and 0 command
1 The data initialized by F, 0 and 1 command
2 The data initialized by all command (F,0,1,2)
Country
Setting
Description
x Default - no specific country setting, so revert to default value.
29.3. EEPROM Layout
29.3.1. General Setup1
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