EV6021

Evaluation Kit

User Manual

 2000 Consumer Microcircuits Limited

UM6021/4 August 2000

1.0

Features

Advance Information

•••• For CMX602B Product Evaluation

•••• User’s Prototyping Area

•••• Adjunct Box or Feature Phone

Configuration

•••• Socketed Space for Optional and

Telco-Specific Components

•••• Single Power Supply Operation

•••• Socketed PIC 16-Series µC

•••• LCD Display or RS232 Link to PC with

Software

•••• On-Board PIC Programming with Serial

Interface and PC Software

•••• On-Board Regulator

•••• 2- to 4-Wire Interface with Handset

•••• Socketed Components for Adjustment

Socket

1.1

Brief Description

The EV6021 Evaluation Kit comprises a single board containing a CMX602B, line interface components, PIC

µController and the option of using either the on-board 4-line LCD module or interfacing to a PC via a serial

communications port. For the latter mode of operation Windows software is supplied. When using the LCD

module three switches are used to select the EV6021 mode of operation.

control, interrupt and detect line status (ZP, MODE, IRQN and DET) and the CMX602B may be driven from an

external clock, or from its own crystal oscillator. Important signals can be monitored by test points. The

CMX602B is socketed for easy replacement; there is room for the user to fit a ZIF socket. A user prototyping

area is provided.

On-board circuitry may be used to implement a wetting pulse and to place an ac or dc load on the line. A hook

relay connects the 2- to 4-wire interface/op-amp hybrid for voice communications to the line. An external

phone socket for adjunct box demonstration is provided, the connection to which can be disabled with a relay.

A mutable local voice input and DTMF generator (for CIDCW acknowledgement tone) are provided. Operation

is indicated by LEDs.

The CMX602B supply current may be measured by removing a jumper.

Where

components are telco-specific (line impedance, line protection, ac-load, wetting pulse, etc.) space is provided

for the user to add appropriate components.