VDM Interface - 3.3 English

Versal ACAP CPM DMA and Bridge Mode for PCI Express Product Guide (PG347)

Document ID
PG347
Release Date
2022-11-02
Version
3.3 English
Table 1. VDM Port Descriptions
Port Name I/O Description
dma0_st_rx_msg_tvalid O Valid
dma0_st_rx_msg_tdata[31:0] O

Beat 1:

{REQ_ID[15:0], VDM_MSG_CODE[7:0], VDM_MSG_ROUTING[2:0], VDM_DW_LENGTH[4:0]}

Beat 2:

VDM Lower Header [31:0]

or

{(Payload_length=0), VDM Higher Header [31:0]}

Beat 3 to Beat <n>:

VDM Payload

dma0_st_rx_msg_tlast O Indicates the last beat
dma0_st_rx_msg_tready I Ready.
Note: When this interface is not used, Ready must be tied-off to 1.