We have been testing HFP/HSP for a new Project and we have come across an issue where the Audio packets are not routed to the Bluetooth Headset. We try to establish a Skype Call and we are not able to hear any Incoming Audio in the Bluetooth Headset. It is clear that the ACL data packets move through UART and the SCO packets for Voice communication move through PCM.
We would like to know which are the PCM cards that are necessary to be interfaced to CY 43455 & CY 43438 to make audio communication possible.
You don't need to interface any PCM card externally. You need to specify audio data over PCM in application, this will take care of the audio data transfer.