AXI Multichannel DMA Intel® FPGA IP for PCI Express* User Guide
Visible to Intel only — GUID: dcq1710729880312
Ixiasoft
Visible to Intel only — GUID: dcq1710729880312
Ixiasoft
5.3.4.2. Receive Flow Control Credit Interface (ss_rxcrdt)
The RX flow control interface provides information on the MCDMA’s available RX buffer space for Posted, Non-Posted and Completion transactions to the AXI PCIe IP. It reports the space available in number of credits as specified by the PCIe Specification.
Signal Name | Direction | Description |
---|---|---|
app_ss_st_rxcrdt_tvalid | Output | Indicates that the credit information on tdata is valid. |
app_ss_st_rxcrdt_tdata[18:0] | Output | Carries the credit limit information and type of credit.
[15:0]: Credit Limit Value
[18:16]: Credit Type
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