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DspRam
0x5A33
30/0x1E
0x6534
31/0x1F
0x718E
32/0x20
0x7F69
33/0x21
16. EEPROM LAYOUT (HANDSET)
16.1. Scope
The purpose of this section is to describe the layout of the EEPROM (IC2) TCD115 handset.
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.
16.2. Introduction
The handset uses a 32k bit (4096 x 8) serial EEPROM (IC9) 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 addressee in the range.
Type
Name
Description
D
default The EEPROM location is preset to the Default value by the eeprom default
loader.
adjust The EEPROM location is set during the production test and should not be
A
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.
16.3. EEPROM contents
16.3.1. General Setup
Index
Attenuation
+9 dB
+10 dB
+11 dB
+12 dB
77
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