One query on Clock:
1) How TXC and RXC is connected for MAC to MAC (i.e. either TXC to RXC or TXC to TXC and RXC to TXC).
2) Only single oscillator can be used to generate 125 MHz for TXC and RXC or two different oscillators are used to connect TXC and RXC.
3) Can we have one zero clock delay to generate two output which will be individually connected to TXC and RXC.