EV6120
Evaluation Kit
User Manual
UM6120/1 March 2000
1.0
Features
•
User’s Prototyping Area
Advance Information
•
For CMX612 Product Evaluation
•
Adjunct Box or Feature Phone
Configuration
•
Single Power Supply Operation with
on-board regulator
•
LCD Display or RS232 Link to PC with
Software
•
Socketed Components for Adjustment
•
Socketed Space for Optional Telco-
Specific Components
•
Socketed PIC 16-Series µC
•
On-Board PIC Programming with Serial
Interface and PC Software
•
2- to 4-Wire Interface with Handset
Socket
1.1
Brief Description
The EV6120 Evaluation Kit comprises a single board containing a CMX612, line interface components, PIC
µController and the option of using either the on-board 4-line LCD module or interfacing to a PC via a serial
communications port. For the latter mode of operation Windows software is supplied. When using the LCD
module two push-button switches are used to select the EV6120 functions.
The board is powered from a single 8 - 24V dc power supply; an on-board regulator sets V
DD
. LEDs indicate
control, and detect line status (IP, MODE1, MODE2, DET and MUTE) and the CMX612 may be driven from an
external clock, or from its own crystal oscillator. Important signals can be monitored from test points. The
CMX612 is socketed for easy replacement and a user prototyping area is provided.
On-board circuitry may be used to implement a wetting pulse and to place an ac or dc load on the line. An
opto-mos relay connects the 2- to 4-wire interface/op-amp hybrid for voice communications to the line. An
external phone socket for adjunct box demonstration is provided, the connection to which can be disabled with
a relay. A mutable local voice input and DTMF generation (for CIDCW acknowledgement tone) are provided.
Where components are telco-specific (line impedance, line protection, on-hook loads etc.) space is provided for
the user to add appropriate components.
©
2000 Consumer Microcircuits Limited
CMLMICRO [ CML MICROCIRCUITS ]
