Cypress Semiconductor Perform CY7C1372D Guia do Utilizador descarregar pdf (Página 30)

If all goes well, IMPACT will find all the devices in the JTAG chain and display them as shown in

this example. If not, check the cable connection to the board. The cable should be detected by

IMPACT; if not, check that the port it is connected to on the PC is working and in the proper

mode. If the chip is not detected, be sure you have the right scan path, that the board is powered

up normally, and that IMPACT was able to connect to the scan path. Power everything off and try

again if it fails and you don't see any obvious problems. You can also check your setup and

software on a good card if you have one. If you don't, curse some then call tech support.

The next step is to assign a bit file to each device to be programmed. Right click each device and

use the dialog to assign the BIT file for programming each device. Double-check that you are

using the correct BIT file – you could damage the chip if it gets the wrong logic.

The last step is to program the device. This is done by right clicking the device and selecting

PROGRAM. This will only program the device you are selecting at that time. If it succeeds, then

you will be notified by IMPACT as shown in the example screen.

NOTE: We have found problems using the VERIFY function. It seems as though IMPACT has

some problems doing this and will usually fail. It is our experience however that if the

programming succeeds, then you will be OK. Xilinx employs a rigorous checksum routine that is

very good and seems to guarantee that programming succeeded when it reports as such. Let's

all hope they have this fixed sometime for our collective peace of mind.

Innovative Integration FrameWork Logic User Guide 30

Illustration 25: Selecting the Configuration Image Using IMPACT

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