Dear C2000 expert,
One of my external adc has 2 data output, and require to use QSPI to communicate, can you please help me know how to make F28377S to support this feature? Thanks.
Regards,
Jack
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Dear C2000 expert,
One of my external adc has 2 data output, and require to use QSPI to communicate, can you please help me know how to make F28377S to support this feature? Thanks.
Regards,
Jack
There is no native support for QSPI on the F2837x device. You can try to achieve this by using two SPI modules. One SPI will be configured as master and will generate SPICLK. The other SPI can be configured as a slave and will accept SPICLK from the master SPI. The master SPI MOSI pin can connect DOUTA, and the slave SPI SOMI can connect to DOUTB. Your SW can load the data to slave SPI first, then the master SPI. This should trigger the master SPI to generate clocks and data output. The SPI clock will also cause the slave SPI to generate data output. You'll need to review the SPI slave timings in the datasheet. There will likely be some max speed you can run this pseudo-QSPI implementation given the larger output data delays seen with SPI slave configuration.