CONFIG PART = 4vfx60ff672-10;

CONFIG STEPPING = "SCD1";

NET "*txoutclk1"                   TNM_NET = "clk_pcs_clk1";
TIMESPEC "TS_pcs_clk1"                  = PERIOD "clk_pcs_clk1" 7200 ps HIGH 50 %;

NET "*dclk_bufg"                    TNM_NET = "clk_dclk_bufg";
TIMESPEC "TS_gt11_dclk_bufg"            = PERIOD "clk_dclk_bufg" 20000 ps HIGH 50 %;

NET "*host_clk_i"                TNM_NET = "host_clock";
TIMEGRP "clk_host"                      = "host_clock";
TIMESPEC "TS_clk_host"                  = PERIOD "clk_host" 10000 ps HIGH 50 %;

INST "*GT11_1000X_A" LOC = "GT11_X0Y3";

INST "*GT11_1000X_B" LOC = "GT11_X0Y2";

NET "EMAC?CLIENTSYNCACQSTATUS"   TIG; 

# Give the host bus a 10ns setup, 10ns hold window to lower skew.  Recommended only.
INST "HOSTADDR<?>" TNM = "host_in_addr";
INST "HOSTWRDATA<?>" TNM = "host_in_wrdata";
INST "HOSTRDDATA<?>" TNM = "host_out";
TIMEGRP "host_in_addr" OFFSET = IN 10 ns VALID 20 ns BEFORE "HOSTCLK";
TIMEGRP "host_in_wrdata" OFFSET = IN 10 ns VALID 20 ns BEFORE "HOSTCLK";

# Remove the following constraints if example design FIFOs are not used
# These constraints cover any clock domain crossing for metastability.
# Tx client FIFO:
INST "*client_side_FIFO_emac0?tx_fifo_i?wr_col_window_pipe_0" TNM = "tx_metastable";
INST "*client_side_FIFO_emac0?tx_fifo_i?wr_retran_frame_tog"  TNM = "tx_metastable";
INST "*client_side_FIFO_emac0?tx_fifo_i?wr_col_window_pipe_1" TNM = "tx_stable";
INST "*client_side_FIFO_emac0?tx_fifo_i?wr_retran_frame_sync" TNM = "tx_stable";

INST "*client_side_FIFO_emac1?tx_fifo_i?wr_col_window_pipe_0" TNM = "tx_metastable";
INST "*client_side_FIFO_emac1?tx_fifo_i?wr_retran_frame_tog"  TNM = "tx_metastable";
INST "*client_side_FIFO_emac1?tx_fifo_i?wr_col_window_pipe_1" TNM = "tx_stable";
INST "*client_side_FIFO_emac1?tx_fifo_i?wr_retran_frame_sync" TNM = "tx_stable";

INST "*tx_fifo_i?wr_tran_frame_tog" TNM = "tx_metastable";
INST "*tx_fifo_i?frame_in_fifo_sync"  TNM = "tx_metastable";
INST "*tx_fifo_i?wr_txfer_tog"        TNM = "tx_metastable";
INST "*tx_fifo_i?wr_rd_addr*"         TNM = "tx_metastable";

INST "*tx_fifo_i?wr_tran_frame_sync"  TNM = "tx_stable";
INST "*tx_fifo_i?frame_in_fifo"       TNM = "tx_stable";
INST "*tx_fifo_i?wr_txfer_tog_sync"   TNM = "tx_stable";
INST "*tx_fifo_i?wr_addr_diff*"        TNM = "tx_stable";

TIMESPEC "TS_tx_meta_protect" = FROM "tx_metastable" TO "tx_stable" 5 ns;

# Rx client FIFO:

INST "*rx_fifo_i?rd_store_frame_tog"     TNM = "rx_metastable";
INST "*rx_fifo_i?wr_rd_addr_gray_sync*"  TNM = "rx_metastable";

INST "*rx_fifo_i?rd_store_frame_sync"    TNM = "rx_stable";
INST "*rx_fifo_i?wr_rd_addr_gray*"       TNM = "rx_stable";

TIMESPEC "TS_rx_meta_protect" = FROM "rx_metastable" TO "rx_stable" 5 ns;