C2H-Streaming Cache Bypass Output Port - 3.0 English

NVMe Target Controller LogiCORE IP Product Guide (PG329)
Document ID
PG329
Release Date
2021-10-27
Version
3.0 English
Table 1. C2H-Streaming Cache Bypass Output Port Descriptions - c2h_byp_out (C_CPM_QDMA = 0)
Port Name I/O Description
o_c2h_byp_out_cache_addr[63:0] O The C2H descriptor fetched from the host. 64-bit address where DMA writes data.
o_c2h_byp_out_cache_vld O Valid
i_c2h_byp_out_cache_rdy I Ready
o_c2h_byp_out_cache_qid[10:0] O Queue ID
o_c2h_byp_out_cache_port_id[2:0] O Port ID
o_c2h_byp_out_cache_error O Indicates that an error was encountered in the descriptor fetch or execution of a previous descriptor.
o_c2h_byp_out_cache_func[7:0] O PCIe function ID
o_c2h_byp_out_cache_at[1:0] O Address type.
  • 2’b00: The address in the request is not translated. Only for address type that are supported by the IP.
o_c2h_byp_out_csh_pfch_tag[6:0] O Prefetch tag points to the cam that stores active queues in the QDMA prefetch engine.
Table 2. C2H-Streaming Cache Bypass Output Port Descriptions - dma_c2h_byp_out_csh (C_CPM_QDMA = 1)
Port Name I/O Description
o_c2h_byp_out_csh_addr[63:0] O The C2H descriptor fetched from the host. 64-bit address where DMA writes data.
o_c2h_byp_out_csh_vld O Valid
i_c2h_byp_out_csh_rdy I Ready
o_c2h_byp_out_csh_qid[10:0] O Queue ID
o_c2h_byp_out_csh_port_id[2:0] O Port ID
o_c2h_byp_out_csh_error O Indicates that an error was encountered in the descriptor fetch or execution of a previous descriptor.
o_c2h_byp_out_csh_func[7:0] O PCIe function ID