SPI Engine Offload outputting extra TValid when reading AD4630-24 test pattern data.

Hi AustinH ,

We have someone assigned to your thread and in the following week my colleague should be able to assist you.

Best regards,
Iulia

Hello,

It's hard to tell from that capture what constitutes valid data. I assume you are using the offload core since you are sending data to a DMA. In this case it appears that the trigger input is probably not being driven correctly since the frequency of the transfers is not constant. It also depends on what instruction sequence you are using. There are too many variables at this point. Also if you want to dig deeper into the HDL, I recommend trying out the testbench. https://github.com/analogdevicesinc/testbenches/tree/main/ad463x

~Sergiu

Hello, 

At this point I am just using the test data feature of the AD4630, so the correct data pattern should be 0x5A5A0F0F5A5A0F0F (2x 32bit values). The bad data I'm referring to is 0x00005A5A00005A5A. I'm using the BUSY signal from the ADC to drive the trigger directly, is this not the correct way to do this? I know the ad4630_fmc_zed project uses a PWM module to drive the trigger but my understanding was that I could use the BUSY signal instead. I will take a look at the testbench.

Thanks,

Austin

Hi AustinH ,

Do you have any news?

Regards,
Iulia

Closing due to inactivity.