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AC97

General description Features
This is a simple AC97 Controller IP core.
  • AMBA 2.0 AHB interface
  • It supports one AC97 codec, with 6 output and 3 input channels.
  • Variable and Fixed Sample Rate Support, up 48 kHz
  • This AC97 Controller s fully AC97 Revision 2.2
  • 16, 18 and 20 bit Sample Size Support
  • compliant. It only supports AC97 Audio CODECs.
  • 6 Output Channel Surround Sound Support
  •  
  • Stereo Input channel Support
  • We modified the basic core from ASICS and we add AHB bus interface.
  • Mono Microphone Channel Support
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  • External DMA Engine Support
  • Functional description

    The core has an AMBA AHB bus communication interface and includes programmable registers that can be modified depending on the desired communication protocol and communication target. This AC97 IP Core supports up to 6 output and 3 input channels.

    The Output Channels are: The Input Channels are:
  • Left & Right Main
  • Stereo Input
  • Left and Right Surround
  • Mono Microphone Input
  • Center and LFE

  • Block Diagram

     

    block diagram

     

     

    Device Utilization & Performance

    Technology

    Device

    Utilization

    (Average out of some different applications)

    Performance

    Stratix III

    (Altera)
    EP3SL150F780C2

    Logic Elements: 1582

    Block Memory: 640 bit

    100 MHz

    AHB bus clock


     

     

     

     

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