The Multi-channel Audio Serial Ports (MCASP) is a
general purpose audio serial port, useful for Time-Division
Multiplexed (TDM) stream, Inter-IC Sound (I2S) protocols reception
and transmission as well as for an inter-component Digital audio
Interface Transmission (DIT). The MCASP module has the following
main features:
- Connection to audio Analog-to-Digital Converters
(ADC), Digital-to-Analog Converters (DAC), codec,
digital audio interface receiver (DIR), and
Sony/Philips Digital Interface (S/PDIF) transmit
physical layer components
- Support
of Time Division Multiplexed (TDM) interface,
Inter-IC Sound (I2S) standard, and similar bit
stream formats
- Integrated Digital Audio Interface Transmitter
(DIT) with enhanced channel status/user data RAM and
support of S/PDIF, IEC60958-1, and AES-3
formats
- Independent serializer for each AXRx channel of
each MCASP module
- A single
32-bit buffer per serializer for transmit and
receive operations
- Support
for two DMA requests (one per direction)
- One
transmit and one receive interrupt requests common
for all serializers
- Two
independent clock generator modules for transmit and
receive allowing the MCASP to receive and transmit
at different rates
- Support
of up to 16 serial data pins