Other Parts Discussed in Thread: CC2564, CC3200AUDBOOST
Hi,
My customer is implementing A2DP with below HW+SW.
HW: DK-TM4C129X + CC2564MODA
SW: www.ti.com/.../CC256XM4BTBLESW
Customer changed the A2DP demo so that single SSI (SPI master mode) is used to send the data.
(LRCLK is generated from BCLK by on board circuit)
Customer found SSI suddenly stops sending data and debugging it now.
It seems CPU stops writing new data to SSI TX FIFO and it results in SSI stop.
Customer checked data decoding timing and found not enough audio data are received.
The system requires to send 48kHz L-ch and R-ch data to an external DAC, but it seems Tiva can receive less data from CC2564.
Please see attached waveforms.
A2DP SSI stop.xlsx
Is my understanding correct? Sending 48kHz Stereo data is not possible ?
Is there any way to increase data receive speed?
Thanks and regards,
Koichiro Tashiro