Write descriptor table avalon-mm slave port – Altera V-Series Avalon-MM DMA User Manual
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Table 4-14: Read Descriptor Controller Avalon-MM Master Interface
Signal Name
Direction
Description
RdDTSAddress_i[7:0]
Input
Specifies the descriptor address.
RdDTSBurstCount_
i[4:0] or [5:0]
Input
Specifies the burst count in 128- or 256-bit words.
RdDTSChipSelect_i
Input
When asserted, indicates that the read targets this slave port.
RdDTSWaitRequest_o
Output
When asserted, indicates that the Avalon-MM slave device is not
ready to respond.
RdDTSWriteData_
i[255:0] or [127:0]
Input
Drives the 128- or 256-bit write data.
RdDTSWrite_i
Input
When asserted, indicates a write transaction.
Write Descriptor Table Avalon-MM Slave Port
Table 4-15: Write Descriptor Controller Avalon-MM Master Interface
Host software writes descriptors to the Avalon-MM slave port of the descriptor table. This port connects to a
bursting DMA write master interface.
Signal Name
Direction
Description
WrDTSAddress_i[7:0]
Input
Specifies the descriptor address for the write data.
WrDTSBurstCount_
i[4:0] or [5:0]
Input
Specifies the burst count in 128- or 256-bit words.
WrDTSChipSelect_i
Input
When asserted, indicates that the write is for this slave port.
WrDTSWaitRequest_o
Output
When asserted, indicates that the Avalon-MM slave device is not
ready to respond.
WrDTSWriteData_
i[255:0] or [127:0]
Input
Drives the 128- or 256-bit write data.
WrDTSWrite_i
Input
When asserted, indicates a write transaction.
UG-01154
2014.12.18
Write Descriptor Table Avalon-MM Slave Port
4-13
Interfaces and Signal Descriptions
Altera Corporation