AR# 47251: Ten Gigabit Ethernet PCS/PMA (10GBASE-R) v2.2 - Kintex-7 - 「Unable to find an active 'TimeGrp' or 'TNM' or 'TPSync' constraint named 'clk156_mmcm0_i_clkout0'」という警告メッセージが表示される
AR# 47251
Ten Gigabit Ethernet PCS/PMA (10GBASE-R) v2.2 - Kintex-7 - 「Unable to find an active 'TimeGrp' or 'TNM' or 'TPSync' constraint named 'clk156_mmcm0_i_clkout0'」という警告メッセージが表示される
WARNING:ConstraintSystem:56 - Constraint <TIMESPEC "TS_rxusrclk2_to_clk156" = FROM rxusrclk2 TO clk156_mmcm0_i_clkout0 TIG;> [pcs.ucf(90)]: Unable to find an active 'TimeGrp' or 'TNM' or 'TPSync' constraint named 'clk156_mmcm0_i_clkout0'.
WARNING:ConstraintSystem:56 - Constraint <TIMESPEC "TS_clk156_to_txclk322" = FROM clk156_mmcm0_i_clkout0 TO txclk322 TIG;> [pcs.ucf(94)]: Unable to find an active 'TimeGrp' or 'TNM' or 'TPSync' constraint named 'clk156_mmcm0_i_clkout0'.
WARNING:ConstraintSystem:56 - Constraint <TIMESPEC "TS_txclk322_to_clk156" = FROM txclk322 TO clk156_mmcm0_i_clkout0 TIG;> [pcs.ucf(96)]: Unable to find an active 'TimeGrp' or 'TNM' or 'TPSync' constraint named 'clk156_mmcm0_i_clkout0'.
ソリューション
回避策として、UCF ファイルで次の行を置換してください。置換前 :
TIMESPEC "TS_rxusrclk2_to_clk156" = FROM rxusrclk2 TO clk156_mmcm0_i_clkout0 TIG; TIMESPEC "TS_clk156_to_txclk322" = FROM clk156_mmcm0_i_clkout0 TO txclk322 TIG; TIMESPEC "TS_txclk322_to_clk156" = FROM txclk322 TO clk156_mmcm0_i_clkout0 TIG;
置換後 :
TIMESPEC "TS_rxusrclk2_to_clk156" = FROM rxusrclk2 TO refclk TIG; TIMESPEC "TS_clk156_to_txclk322" = FROM refclk TO txclk322 TIG; TIMESPEC "TS_txclk322_to_clk156" = FROM txclk322 TO refclk TIG;