McSPI Port Support on AM335X

David Escandon

TI Team,

The AM335X allows you to connect up to 4 slaves using the SPI controller. I have 50 slaves that I need to poll from time to time in my system. Do you have any suggestions on how I can accomplish this using the AM335X family?

-DAvid

over 12 years ago

0 Biser Gatchev-XID over 12 years ago

TI__Guru**** 393215 points

Hi David,

For 50 devices you will definitely need external multiplexing logic, which can be controlled by several processor GPIO's.

0 Michael Questo over 12 years ago in reply to Biser Gatchev-XID

TI__Expert 6000 points

Each of the two McSPI ports is capable of up to 4 SPI channels. Other channels could potentially be enabled using GPIO's as Biser mentioned.

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McSPI Port Support on AM335X