How to use Shared pll in LVDS transmiter and resceiver functions

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does it mean the tx_inclock of transmiter and rx_inclock of resceiver? cannot believe.

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What's your particular problem in understanding this simple statement? xx_inclock is the the respective PLL input clock (also called reference clock). If receiver and transmitter are sharing a single PLL, there can be only one reference clock.

It actually depends on your clock distribution scheme, if you can use a shared PLL. In some designs, it's possible.