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SPORT: Restriction on clock frequency in slave mode

Question asked by Haje on Dec 7, 2015
Latest reply on Dec 15, 2015 by Haje

Hello

 

I'm using SPORT with external clk and fs. In the ADSP-2137x Processor Reference Manual Rev. 2.2 in chapter "Slave Mode" (page 7-10) it says:

"Note for slave transmit mode the maximum SPORT frequency is limited to PCLK/8."

 

In the datasheet (ADSP-21371, Rev.D), the clock period for external clocking in transmit mode is given as (minimum):

(tPCLK × 4)

which is equivalent to PCLK/4.

 

My questions are:

1) What is actually the maximum clock frequency for SPORT transmit with external clock and frame sync?

2) I'm not sure what the definition of "slave mode" is, I assume that it means external clock?

 

Thanks

hans

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