My group is trying to modify the swra295a - AN082 -- One Way and Two-Way Audio Communications using the CC1110 or CC2510application note to do a 1 way audio broadcast. We are using the 24khz cc2510 one way code and workspace.
We have radio communication between the two chips but the I2S data in registers always show 0xFF. We're using a PCM1808 instead of the audio codec used in the APP note so any SPI transfers are not used. We can see data on the scope and even pulling down the data line the high and low I2S data registers are showing as FF in the debugger.
From the basic configuration on the app note we have changed
I2SCFG1 = 0x78; to I2SCFG1 = 0xB8; // 48 BCK's per LRCK because the ADC is 24 bits *2 channels up from 16 bits per channel on the codec
Clock divider registers now look like this (and we have data using a 9.216MHz MCK)
I2SCLKF2 = 0x06; I2SCLKF1 = 0x59; I2SCLKF0 = 0x90;
The slave 2510 receives the data as FF as well so the problem is with our I2S input.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.