How do I use PCI-6534 to read an asynchronous slave device

[J_K]

I am an ASIC designer and new to NI devices. We are going to test our upcoming chip with PCI-6534 card. Our chip is a slave device. It sends interrupt (pulse) out and then the host (NI card) is supposed to read 128 words of 16-bit data asynchronously through a "ReadEnb" signal (toggle 128 times).

The manual of 6534 explains the operation of synchronous and asynchronous with handshake. I am wondering what should I do with asynchronous but no handshake. Just pull down ReadEnb and the next data will be read. How should the signals be connected?

Thanks.

J_K

[rgharrison]

Hi J_K,

You should be able to use Pattern Input with you PCI-6534 (synchronous timing). The key is to use your pulse as a trigger and the ReadEnb signal as your external clock.

Therefore the pinout you would use is have your interrupt signal to STARTTRIG to start your operation and then tie your ReadEnb signal to REQ signal. You would also need to specify in software that you are using an external clock signal. Hope that helps.

Ron