Evaluation Kit for CMX602B

EV6021

 2000 Consumer Microcircuits Limited

5

UM6021/4

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 EV6021 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

EF6021 Vx.x will be visible on the LCD module plus an indication as to which function option is

selected. The three switches, SW2 to SW4, give the options of BT or Bellcore, Type 1 or Type 2 and

Adjunct Box or Feature Phone.

R24

C24

U5

J3

LCD1

C1

R1V1

R59

JP6

JP5

C27

D19

RP2

R67

D24

C28

J6

R58

R54

D17

ZP

MODE

D18

DET

D15

OP

PROG

IRQN

D16

3

4

2

D21

L'CAL MUTE

RS232

HAND

SET

BELL/BT

TYPE2/1

FP/ADJ

EF6021Vx.x

Bell, Type2, FP

Figure 2 Function Selection

A fuller description of these functions is given later in the document.

If a type 2 demonstration is selected switch SW1 should be set to ‘RESISTIVE’ which selects a

factory-fitted 600

Ω line termination, (R21) but an alternative value can be substituted.

If a complex line termination is required, positions C11, R16 and R19 can be used with switch SW1

set to ‘COMPLEX’.

An off-hook dc load is provided by R8. The factory-fitted value is 2k2

Ω but this may be removed or

an alternative value substituted.

SW1

RESISTIVE

COMPLEX

R8

C10

C11

C7

R16

T1

D7

HOOK

R45

TP3

TP4

R19

R21

U3

R30

C14

SW1

RESISTIVE

COMPLEX

R8

C10

C11

C7

R16

T1

D7

HOOK

R45

TP3

TP4

R19

R21

U3

R30

C14

Figure 3 Termination Positions