EV6240 Datasheet, PDF (1/47 Pages) CML Microcircuits – Opto-Isolated serial interface capability

EV6240
Evaluation Kit
User Manual
UM6240/3 January 1999
Advance Information
1.0 Features
• CMX624/CMX644A Product Evaluation • Selectable 2 or 4 wire line interfacing
• Single device Calling and Answer
mode tests
• AT Command compatible firmware
controlled via PC terminal emulator
• Single or Dual device operation for
BER tests and general evaluation
• On-Board PIC programming via serial
interface and PC software
• 2-wire line Ring detect circuitry and
OptoMOS Hook relays
• Socketed space for optional Telco-
specific components
• Socketed components and links for
circuit adjustment
• Opto-Isolated serial interface capability
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