EV6021 Datasheet, PDF (1/28 Pages) CML Microcircuits – User Manual

EV6021
Evaluation Kit
User Manual
1.0 Features
• For CMX602B Product Evaluation
• Adjunct Box or Feature Phone
Configuration
• Single Power Supply Operation
• LCD Display or RS232 Link to PC with
Software
• On-Board Regulator
• Socketed Components for Adjustment
UM6021/4 August 2000
Advance Information
• User’s Prototyping Area
• Socketed Space for Optional and
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 EV6021 Evaluation Kit comprises a single board containing a CMX602B, 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 three switches are used to select the EV6021 mode of operation.
The board is powered from a single 8 - 14V dc power supply; an on-board regulator sets VDD. LEDs indicate
control, interrupt and detect line status (ZP, MODE, IRQN and DET) and the CMX602B may be driven from an
external clock, or from its own crystal oscillator. Important signals can be monitored by test points. The
CMX602B is socketed for easy replacement; there is room for the user to fit a ZIF socket. 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. A hook
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 generator (for CIDCW acknowledgement tone) are provided. Operation
is indicated by LEDs. The CMX602B supply current may be measured by removing a jumper. Where
components are telco-specific (line impedance, line protection, ac-load, wetting pulse, etc.) space is provided
for the user to add appropriate components.
 2000 Consumer Microcircuits Limited