PCIE的XDMA IP核中,PCIE Block Location选择的是X0Y0,但生成的约束文件中,如下:
set_property LOC GTPE2_CHANNEL_X0Y7 [get_cells {system_i/xdma_0/inst/system_xdma_0_0_pcie2_to_pcie3_wrapper_i/pcie2_ip_i/inst/inst/gt_top_i/pipe_wrapper_i/pipe_lane[0].gt_wrapper_i/gtp_channel.gtpe2_channel_i}]
set_property PACKAGE_PIN D9 [get_ports {pcie_mgt_rxp[0]}]
set_property PACKAGE_PIN D7 [get_ports {pcie_mgt_txp[0]}]
set_property LOC GTPE2_CHANNEL_X0Y6 [get_cells {system_i/xdma_0/inst/system_xdma_0_0_pcie2_to_pcie3_wrapper_i/pcie2_ip_i/inst/inst/gt_top_i/pipe_wrapper_i/pipe_lane[1].gt_wrapper_i/gtp_channel.gtpe2_channel_i}]
set_property PACKAGE_PIN B10 [get_ports {pcie_mgt_rxp[1]}]
set_property PACKAGE_PIN B6 [get_ports {pcie_mgt_txp[1]}]
为X0Y7和X0Y6,请问这个位置是怎样确定的?是在XDMA中随便选择一个,然后系统自动根据引脚定义分配吗? |