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Altera_Forum's avatar
Altera_Forum
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9 years ago

how to interface an ADC with 3 wire SPI (bidir SDIO) to Qsys ?

Hi, I need to connect the SPI port of an AD9266 ADC to a Cyclone 5 SoC. This is a 3 wires SPI : clock, CS and bidirectional data (SDIO). Can I have some hints ? I see that the QSYS SPI module s...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

It might not be possible to make the QSPI controller behave like a generic bidirectional SPI controller since it's intended for QSPI flash devices and not I/O like an ADC. I do not believe Qsys comes with a bidirectional slave controller but it shouldn't be much effort to create one from scratch especially if you build it just for the ADC you have in mind.