Rif.: hardware compare issue - PXI-6552

[pic32mx]

Hi!

I'm using a PXI-6552 DIO module for testing SDRAM chip.

I'm not sure about hardware compare operating. I'm using a sequence of 0 and 1 to drive the tester during write command and H/L as expected responde with read command.

Does the H/L response data puts the driver to high impedance?

The problem is that also when i skip the write command I retreive (fetch) the response data correctly.

Thank you!

MM

[FatBoyMonchi]

Hi Pic,

maybe this example can help you:

http://zone.ni.com/devzone/cda/epd/p/id/3401

Let me know,

bye!

[pic32mx]

Thank you for the answer!

My configuration is a little bit different because I use the D0..D7 lines as bidirectionl lines.

I noted that the system works while the clock frequency is below 25 MHz, but i don't know why.

Has anyone tried to use this module above 25MHz?

Thanks a lot!

MM

[FatBoyMonchi]

Hi Pic,

can you please attach the VI you use for acquisition and comparation?

Thank you,

bye.

FBM