User guide

Hardware Description

If autoconfiguration fails, load the configuration file (

.cfg

) for the board. For

details on manual configuration, see the

readme.txt

file on the CD.

4. Run the

Progcards

utility from:

install_directory\Versatile\PB926EJS\build\Release\boardfiles\

5. Choose the required image for the configuration PLD.

Caution

The 1.5V cell battery provides the VBATT backup voltage to the external DS1338

time-of-year clock and FPGA encryption key circuitry within the FPGA. Removing the

battery erases the encryption key.

Each board is provided with an encryption key that is unique to the board. The standard

image supplied with the board is not encrypted. However, encrypted images might be

supplied by ARM in the future. If you are using encrypted images and the key is erased,

you must return the board to ARM to have the key reloaded.

The battery is expected to last for approximately 10 years from manufacture of the

PB926EJ-S. To replace the battery:

1. Power on the PB926EJ-S. If the battery is removed while the board is powered

down, the encryption key will be erased.

2. Remove the old battery.

3. Insert the new battery and ensure that the positive terminal is facing upwards in

the holder.