AnsweredAssumed Answered

i.MX7: Maximum read speed on ECSPI is 23 Mbit/s? Or is it 52 Mbit/s?

Question asked by Jonah Petri on Jan 18, 2017
Latest reply on Jan 18, 2017 by John Watlington

Hello,

 

On the modules listing of the i.MX7 datasheet[1], it says of the ECSPI peripherals: "Full-duplex enhanced Synchronous Serial Interface, with data rate up to 52 Mbit/s."

 

However, digging into the datasheet SPI timing (section 4.11.1.1) it says that the minimum SCLK cycle timing is actually 43 ns, which is actually only 23 Mbit/s.

 

This seems pretty misleading, yes?  Perhaps the datasheet should be corrected to reflect that it can only achieve 52 Mbit/sec in write-only mode, and full-duplex mode is limited to 23 Mbit/s?

 

Or am I reading it wrong?

Outcomes