AR# 39459: 12.4 EDK - My Base System Builder design fails timing on the SP605 board at 100 MHz
AR# 39459
12.4 EDK - My Base System Builder design fails timing on the SP605 board at 100 MHz
描述
When I have an AXI system with the Ethernet core targeted at 100 MHz, my design fails timing. Is there a way to maintain the 100 MHz clock frequency?
解决方案
In the UCF, comment out the following two lines:
# Data path timing depends on the destination clock period TIMESPEC "TS_axistreamclks_2_axi4liteclks" = FROM axistream_clk TO axi4lite_clk 20000 ps DATAPATHONLY; #assumes axi4lite_clk <= 50 MHz TIMESPEC "TS_axi4liteclks_2_axistreamclks" = FROM axi4lite_clk TO axistream_clk 6667 ps DATAPATHONLY; #assumes axistream_clk <= 150 MHz