Changes between Version 3 and Version 4 of Component/Vci Multi Dma


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Timestamp:
Apr 14, 2011, 9:49:11 AM (14 years ago)
Author:
alain
Comment:

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  • Component/Vci Multi Dma

    v3 v4  
    1111 * It is acting as an initiator to do the transfer.
    1212
    13 The !VciMultiDma component supports up to 16 simultaneous DMA transfers,
    14 corresponding to 16 independant DMA channels. As there is only one VCI initiator port, the general arbitration policy between the active channels is round-robin.
     13The !VciMultiDma component supports up to 8 simultaneous DMA transfers,
     14corresponding to 8 independant DMA channels. As there is only one VCI initiator port, the general arbitration policy between the active channels is round-robin.
    1515
    1616The number of channels and the max burst length are constructor parameters.
    … …  
    4747A non zero value disables the IRQ line. The RESET value is zero.
    4848
    49 The aligned segment size associated to this VCI target is 1 Kbytes, as only 10 address bits are decoded : the 6 MSB bits define the target register, and the next 4 bits define the channel index.
     49The aligned segment size associated to this VCI target is 256 bytes, as only 8 address bits are decoded : the 5 MSB bits define the target register, and the next 3 bits define the channel index.
    5050
    5151For extensibility issues, you should access the DMA using globally-defined offsets, and