I generate PCI-Express PHY with GTP wizard.the datawidth is selected
8bit or 16bit. but ,both the phy wrapper MAXDELAY constrain are "1.0" ! as you know,it is hard to meet the timing. I expect the 16 bit datawidth can reduce Clk Freq.(* MAXDELAY="1.0" *) wire tile0_txcharisk0_r; (* MAXDELAY="1.0" *) wire tile0_txdetectrx0_r; (* MAXDELAY="1.0" *) wire tile0_txelecidle0_r; (* MAXDELAY="1.0" *) wire tile0_txchardispmode0_r; (* MAXDELAY="1.0" *) wire [7:0] tile0_txdata0_r; (* MAXDELAY="1.0" *) wire tile0_txchardispmode1_r; (* MAXDELAY="1.0" *) wire tile0_txcharisk1_r; (* MAXDELAY="1.0" *) wire tile0_txdetectrx1_r; (* MAXDELAY="1.0" *) wire [7:0] tile0_txdata1_r; (* MAXDELAY="1.0" *) wire tile0_txelecidle1_r;
can it modified 2.0 or commented out?