Demonstration Kit for CMX869B
Fully Isolated 2-Wire Line Interface
Opto Isolated Ring Detect Circuitry and OptoMOS Hook Relay
'AT' Command Compatible Firmware
On-board FLASH PIC Microcontroller
PC Controlled via Terminal Emulator
Single 3.3V dc power supply operation
Break-off PCB section
PCB layout data available
CMX869B-based Socket Modem Demonstration
3.3Vdc regulated power supply
The DE8691 Demonstration Board features the CMX869B V.32 bis modem IC in a "socket modem format" implementation.
The "socket modem" section also contains the line interface components and a Flash PIC µC.
Attached to the "socket modem" section are two break-off sections, which contain a 9-pin D type socket for PC serial communications, a Flash PIC programming connector, an RJ11 line connector and various LEDs for indicating signal activity.
AT Commands are used to control the demonstration board via a standard terminal emulator program running on a host PC.
Interfacing to the Demonstration Board can be via socket pins on the socket modem section, or via the connectors provided on the break-off sections. The board is operated at 3.3V dc, which must be provided by an external, regulated power supply.
Design Support Information
|DE8691 Board Schematics
|DE8691 Support Files
||Support Files for the DE8691 Demonstration Kit