EV6021 Datasheet, PDF (5/28 Pages) CML Microcircuits – User Manual

Evaluation Kit for CMX602B
EV6021
1.3
1.3.1
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.
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.
R1V1
LCD1
R59
D19
RP2
U5
EF6021Vx.x
JP5
C27
JP6
D24
C28 R67
PROG
OP
C24
R24 _{Bell, Type2, FP}
C1
J6
RS232
HAND
R54
R58
SET ^D16 D17
D18
D15 D21
3
4
2
J3
IRQN ZP MODE DET L'CAL MUTE
BELL/BT _TYPE2/1 FP/ADJ
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 600Ω 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 2k2Ω but this may be removed or
an alternative value substituted.
D7
R45 T1
HOOK
C10
R21_TP3
R19
U3
R8
C11 R16
SW1
R30
TP4 _C14
C7_RESISTIVE
COMPLEX
R16 R19 ^D7
R45 T1
HOOK
C10
TP3
R21
C11
R8
SW1
C7
RESISTIVE
U3
R30
TP4 _C14
COMPLEX
Figure 3 Termination Positions
 2000 Consumer Microcircuits Limited
5
UM6021/4