TM4C129X QSSI max data rate in slave mode

Edward Chang

Hi,

What the maximum data rate/bit rate when QSSI is set in slave mode? The max freq of SSInClk is 10MHz in slave legacy mode, and what about the QSSI slave mode?

Regards,

Edward

over 8 years ago

0 Amit Ashara over 8 years ago

TI__Guru**** 244380 points

Hello Edward

The SSI Slave cannot exceed 1/12th of the System clock in any mode. So even in advanced mode it is limited to 10MHz. Also there are a few known issues that have been described in the errata document for QSSI Slave mode.

0 erik skullerude over 8 years ago in reply to Amit Ashara

Intellectual 730 points

...limited to 10MHz, at 4 bits per transfer, or 40Mbit/sec?

0 Charles Tsai over 8 years ago in reply to erik skullerude

TI__Guru**** 183016 points

Erik,

The 10MHz limitation applies to both serial slave mode or QSSI slave mode.

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TM4C129X QSSI max data rate in slave mode