×

Method for transferring DMA data in a multimedia intergrated circuit including preloading DMA instructions in a frame buffer

  • US 6,145,025 A
  • Filed: 08/19/1997
  • Issued: 11/07/2000
  • Est. Priority Date: 08/20/1996
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for transferring DMA data in a multimedia processor, comprising:

  • determining whether frame data should be transferred between a host interface and a video port;

    preloading DMA instructions into a frame buffer and setting a DMA register to be fitted for DMA operation when said determining determines frame data should be transferred,the preloading of DMA instructions and setting the DMA register comprisingsetting a source/destination register,setting a transfer count register, andsetting a DMA start enable register by writing a DMA start instruction into the DMA controller;

    fetching the preloaded DMA instructions from the frame buffer, said fetching consisting essentially of fetching only one DMA instruction from the frame buffer for each transfer; and

    transferring video data by a DMA controller at a predetermined data bandwidth.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×