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multichannel audio application on 3517/05

yl
Expert 1215 points
Other Parts Discussed in Thread: AM3517

On 3517/05 , are there enough I2S (or compatible) to handle 8-in/8-out audio channels, for example in a portable mixing console?

  • 0
    TI__Mastermind 41665 points

    The AM3517 has 5 McBSP interfaces, each capible of handling bidirectional i2s protocol, so if your mixing console required 8 individual i2s interfaces you are out of luck, though 8 individual audio channels should be no problem.

  • 0 in reply to Bernie Thompson TI
    Expert 1215 points

     

    In the user manual, I found 

    List of recommended usage (non exhaustive) per McBSP modules in the device:

    • McBSP1: Digital baseband (DBB) Data

    • McBSP2: Audio data with audio buffer and SIDETONE feature

    • McBSP3: Bluetooth voice data with SIDETONE feature

    • McBSP4: DBB voice data

    • McBSP5: Midi data

    Table 17-1 describes the functions and the corresponding application fields.

    Are the 5 McBSPs equally capable of handling full band audio?

     

  • 0 in reply to yl
    TI__Mastermind 41665 points

    All of the ports are capible of I2S as a baseline with a 4 pin configuration and dual phase frames, though they are only capible of one channel (or word) per phase in dual phase mode for full I2S compliance, they can handle up to 128 channels in single phase mode.

    The recommanded usage you are seeing is based on a particular application type for a hand held communication device, the McBSPs are not entirely forced into those specific use cases, though the McBSP2 has extra frame sync receive and clock recieve pins, the other McBSPs operate in a 4 pin configuration with just FSX, CLKX, DX, and DR.