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Discussion Groups | TMS320C54x | would you please help about McBSP

Technical discussions about the TI C54x DSPs (including the c5401, c5402, c5402a, c5404, c5407, c5409, c5409a, c5410, c5410a, c5416, c5420, c5421, c5441, c549, c5470 and c5471).

  

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would you please help about McBSP - ahmadagha23 - Jul 25 8:13:39 2008



Hi,
1-As I know in SPI mode there is not the feature to program FPER in 
McBSP. I want to read 16-bit samples every 125us in SPI mode. (it is 
compulsory). I want to use DMA and not add any checking or time 
consuming code to my project.
2- If my cpu internal clk is 120 MHz and the CLKGDV field of my SRGR is 
8 bits, how can I use mcbsp(in SPI mode) with internal clk source and 
with 100KHz clk(r/x) frequency? It seems that the minimum achievable 
clk frequency is (120/(2*255))=235KHz. 
Regards

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