Evaluation Kit for CMX612
EV6120
1.3
Quick Start
This section provides instructions for users who wish to experiment immediately with the evaluation
kit. A fuller description of the kit and its use linked to a PC appears later in this document.
1.3.1
Setting-Up
THE EV6120 COMES PRE-CONFIGURED FOR OPERATION AT 3.3 VOLTS.
An RJ11 (US style) phone jack is provided for caller ID simulator connection. Power is connected via
the two-way socket, J5. No board adjustments are required by the user. Telco-specific components
may be added, as required.
1.3.2
Operation
Ensure no connection to serial port connector J6 and switch on the power supply. The message
EF6120Vx.x will be visible on the LCD module plus an indication as to which function option is
selected. The two push button switches, SW1 and SW2 are used to scroll through and select from the
menu displayed on the bottom row of the LCD module.
A fuller description of these functions is given later in the document.
Off-hook line matching is provided by R16, R19 and C11. The default components are for a 600Ω
line.
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Figure 2 Function Selection
Figure 3 Matching Network
The dc load is provided by a gyrator circuit. The dc mask characteristic may be altered by changing
the value of R28.
©
2000 Consumer Microcircuits Limited
5
UM6120/1
CMLMICRO [ CML MICROCIRCUITS ]
