CML Microcircuits

COMMUNICATION SEMICONDUCTORS

EV9902

Interface Kit

User Manual

UM9902/3 July 2009

Provisional Issue

Features

• Provides Immediate Evaluation and

Experimentation with the CMX990 via the

EV9900A EvKit

• Calculates the Register Values to

Control the CMX990 PLLs and Bit

Rate for the User

• Performs the Transfer of Single Mobitex or

Custom Frames Over a RF Link

• Measures Bit Error Rate

performance in Mobitex or raw

data modes

1.

Brief Description

The EV9902 Interface Kit forms part of the CMX990 GMSK Packet Data Modem and RF Transceiver IC

evaluation and investigation resource. The EV9902 Interface Kit provides a graphical user interface (GUI)

for the EV9900A (CMX990) EvKit. The EV9902 is supplied as a Hyperstone hyBoard-XS evaluation

board plus an interface card, together with GUI software for a PC. This kit connects simply to a Windows-

based PC via a standard USB cable. The connection to the EV9900A EvKit is via the supplied ribbon

cable.

The supplied ES9902 GUI software allows users to directly write to and read from the CMX990 registers

and perform real-time tasks for Mobitex or free-format frame transfers live over a RF link. The GUI

software will calculate the CMX990 register values required to generate the user’s desired PLL

frequencies and bit rates. The hyBoard-XS evaluation board is supplied pre-loaded with firmware that

allows the real-time operations to be performed. Please note that this kit is not suitable for use with the

EV9900 EvKit. Users requiring support for this older kit should contact techsupport@cmlmicro.com.

©

CML Microsystems Plc

2009