Interface Kit for EV9900A

EV9902

©

CML Microsystems Plc

20

2009

UM9902/3

6.3.

Hardware Description

The EV9902 kit contains two boards: the hyBoard-XS and the EV9902 Interface Card. These are

intended for use with the EV9900A Evaluation Kit only. For a detailed description of the EV9900A

Evaluation Kit and the hyBoard-XS hardware, please refer to the relevant datasheet.

The EV9902 Interface Card allows communication between the EV9900A and hyBoard-XS to

occur. It connects the EV9900A parallel interface to the hyBoard-XS, address and data buses,

and provides the necessary signals for successful communication.

6.4.

Troubleshooting

The CMX990 is a complex RF and Baseband system. If incorrectly programmed or modified,

results will be at variance from those expected. Please study the CMX990 and EV9900A

datasheets, this manual and the associated schematics and layout drawings carefully when

troubleshooting.

Error Observed

Possible Cause

Remedy

The ES9902 application is

unable to establish a connection

to the hyBoard-XS and the LED,

LED6, is off.

1 - Bad USB connection

2 – Firmware is not

running

Check the USB cable is

connected properly at both the

PC and hyBoard-XS.

Ensure the USB cable is

certified to the USB

specifications

Check the hyBoard-XS jumper

settings against those in Table 2

and cycle the power supply

The EV9900A is not behaving as

expected

1 – Bad connection

between the hyBoard-XS

and the EV9900A

2 – Device setup issue

Check the EV9902 Interface

Card connections

Please refer to the CMX990 and

EV9900A datasheets

Table 3 – Possible Errors