serial with SPORT on ADSP-21261 work wrong!
Started by ●January 23, 2006
Hi,
I have implemented on ADSP-21261 a serial tx rx by use of sport, how suggested in the application note EE191:
At rx I set the clock of the SPORT for oversampling the freq. of serial communication by 3:
//bit rate 9.9 kbit/s --> freq of oversampling = 9.9 k * 3 = 28.8 kbit/s
//CLKDIV3 = [fCCLK(147,456 MHz)/4 x SPORT_CLK(28.8 kHz)] - 1 = 1279 d = 0x4FF
*pDIV3=0X000009FE
*pSPCTL3 = (SPEN_B|BHD| SLEN29 | ICLK |LFS|FSR|CKRE);
When i see the rx byte some bit are wrong, I think that a oversampling by 3 is not sufficient, but for the SPORT is the max setting. what of thoughts?
Regards Verdrex
