Clock     fMAX STD fmax -1 fmax -2 constr [MHz]
RXCLK     106.6    117.8   134.7   111
TXCLK     102.1    107.5   133.9   111
TXCLKd2    88.2    100.9   115.1    55
C1MHZ      60.3     70.3    87.7    10
LHC40MHZ   40.3     47.4    51.3    40
LHC40MHZx 283.3    342.1   335.5   160