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Altera_Forum
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9 years ago

Arria 10 SPI Master bits per word support

Hi All, We are using Arria 10 SOC FPGA and interfacing SPI slave device which needs 20-bit stream of data as input. Here we have few questions on Arria 10 SPI controller. 1. What is ...
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Altera_Forum
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9 years ago

The technical reference manual for the A10 SoC HPS says the SPI controller supports data size from 4 to 16 bits. To access a device with 20-bit data you'll probably have to implement a soft SPI controller in the FPGA fabric and access that from the HPS. That would obviously require a custom driver unless you can find a soft SPI core that already has Linux support.

Good luck.