AM2611: How much SPI can be used in ZNC package

Hi Shuqing, 

Is this for SDK or MCAL?

Shuqing Zhou said:

1.How much SPI they can used in AM261?

-> AM261x ZNC samples have only 2 classic SPI instances [SPI0 and SPI2]. 

Shuqing Zhou said:

2. OSPI has 8 data line, can we use it as 2 seperated SPI module?

-> OSPI has 8 data lines to increase data throughput. However it has only one CLK line per instance.  Hence, on a physical layer,  one OSPI can be be used only as one SPI instance, since each SPI instance needs a CLK line of its own. I will check if this is one of our offering. [one OSPI -> one SPI]

Shuqing Zhou said:

3. Can we use PRU to simulate SPI? Do we have the demo for this? How much SPI module can be simulated in one PRU module?

-> I will check this internally and get back to you. 

Regards, 
Pranav Siddappa

Hi Shuqing, 

Pranav Siddappa said:

3. Can we use PRU to simulate SPI? Do we have the demo for this? How much SPI module can be simulated in one PRU module?

-> Yes it is possible for PRU to be used as SPI. Posting all the links which were previously shared internally. 

https://github.com/TexasInstruments/open-pru/tree/main/examples/spi_loopback
https://github.com/TexasInstruments/pru-no-code-tool/tree/main/examples/spi_loopback/mcuplus/am261x-lp/r5fss0-0_freertos

Regards, 
Pranav Siddappa