嗯嗯 这个我大概清楚了,我就是比较想知道那两个时钟如何连,我的理解是Ethernet 1000Base相当于是内部例化了一个gtx,这个GT common的时钟我不知道从哪里来的
(
// Transceiver Interface
//----------------------
.gtrefclk (gtrefclk),
.txp (txp),
.txn (txn),
.rxp (rxp),
.rxn (rxn),
.resetdone (resetdone),
.cplllock (cplllock),
.txoutclk (txoutclk),
.rxoutclk (rxoutclk),
.userclk (userclk),
.userclk2 (userclk2),
.rxuserclk (rxuserclk),
.rxuserclk2 (rxuserclk2),
.independent_clock_bufg (independent_clock_bufg),
.pma_reset (pma_reset),
.mmcm_locked (mmcm_locked),
// GMII Interface
//---------------
.gmii_txd (gmii_txd),
.gmii_tx_en (gmii_tx_en),
.gmii_tx_er (gmii_tx_er),
.gmii_rxd (gmii_rxd),
.gmii_rx_dv (gmii_rx_dv),
.gmii_rx_er (gmii_rx_er),
.gmii_isolate (gmii_isolate),
// Management: MDIO Interface
//---------------------------
.mdc (mdc),
.mdio_i (mdio_i),
.mdio_o (mdio_o),
.mdio_t (mdio_t),
.configuration_vector (configuration_vector),
.configuration_valid (configuration_valid),
// General IO's
//-------------
.status_vector (status_vector),
.reset (reset),
.signal_detect (signal_detect),
.gt0_qplloutclk_in (gt0_qplloutclk_in),
.gt0_qplloutrefclk_in (gt0_qplloutrefclk_in)
);