4.4.4. Avalon-ST Source (H2D)
The H2D Avalon-ST source interface is used to send H2D DMA data to the external Avalon-ST sink logic.
|Signal Name||I/O Type||Description|
|Output||H2D Streaming data from host to device|
|h2d_st_valid_<n>_o||Output||Valid for all outgoing signals. A ‘1’ represents the readiness of data to be sent.|
|h2d_st_ready_<n>_i||Input||Backpressure from device. A ‘1’ represents, device readiness for receiving data.|
|h2d_st_sof_<n>_o||Output||Start of file (or packet) as instructed in host descriptor.|
|h2d_st_eof_<n>_o||Output||End of file (or packet) as instructed in host descriptor.|
|Output||Represents the number of empty bytes in h2d_st_data_<n>_o, and valid only when both h2d_st_valid_<n>_o and h2d_st_eop_<n>_o is ‘1’.|
To support multi-Channel per port.
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