The ADC, DAC chips are not programmed.

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The ADC, DAC chips are not programmed.
« on: July 22, 2018, 07:41:02 PM »
Soldered the digital part.
I check:
CY7C68013A - good.
XC6SLX9 - good.

MAX19516 - does not work.
DAC2932 - does not work.
MCP42100 - does not work.

I checked with the logic analyzer:
Signals CH2_DC, CH1_DC, CH1_GND, CH1_K, CH2_GND, CH2_K - are switched normally.
The power turns on normally.
The EN_CLK signal turns on normally.
The generator outputs 100 MHz normally.

But there are no SPI signals! The logic analyzer showed no signals on these ADC, DAC and DigPot lines.

What to check on the diagram? What advice will there be?

Defective CY7C68013A?
What signals to check?



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Re: The ADC, DAC chips are not programmed.
« Reply #1 on: August 17, 2018, 11:05:27 AM »
Did you find a solution to your problem?

FPGA will output SPI signals only when corresponding settings are changed in oscilloscope software. For example, when Y-position is changed, FPGA will send SPI signals to the DAC2932 with updated values for V-DAC.