EV6240
Evaluation Kit
User Manual
UM6240/3
January 1999
Advance Information
1.0
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Features
CMX624/CMX644A Product Evaluation
Single device Calling and Answer
mode tests
Single or Dual device operation for
BER tests and general evaluation
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Selectable 2 or 4 wire line interfacing
AT Command compatible firmware
controlled via PC terminal emulator
On-Board PIC programming via serial
interface and PC software
Socketed components and links for
circuit adjustment
Opto-Isolated serial interface capability
2-wire line Ring detect circuitry and
OptoMOS Hook relays
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Socketed space for optional Telco-
specific components
1.1
Brief Description
The EV6240 Evaluation Kit comprises a single board containing two CMX624 or CMX644A devices,
line interface components, PIC µC with serial communications port for PC interfacing. A reduced AT
command set is used to communicate with the evaluation board via standard terminal emulators.
The board is powered from a single 8-24V dc power supply; an on board regulator and two discrete
components set V
DD
to provide 3.3Volt or 5Volt operation. LED’s indicate device interrupts, carrier
detect and hook relay status. The CMX6x4 devices may be driven from an external clock, or from
their own crystal oscillator. Important signals can be monitored via test points. The CMX6x4 devices
are socketed for easy replacement. A user prototyping area is provided.
On-board miniature switches allow the user to select the required line interface and appropriate
evaluation device crystal. The CMX6x4 supply currents may be measured by removing jumpers.
Where components are telco-specific (line impedance, line protection, etc.) space is provided for the
user to add appropriate components.
The EV6240 PCB is suitable for CMX624 and CMX644A evaluation.
©
1999
Consumer Microcircuits Limited
CMLMICRO [ CML MICROCIRCUITS ]
