3.8.5. Status Signals—Descriptions
|tx_pll_locked [N-1:0]||N||Asynchronous||Output||Direct||TX channel PLL locked signal for both FGT and FHT to reference clock within the PPM threshold status signal for fast/medium or slow PLL. 1’b1 = locked. 1’b0 = not locked.|
CDR lock status signal.
Applicable to FGT PMA only. When lockedtodata stays high, the lockedtoref signal status is insignificant.
|rx_is_lockedtodata [N-1:0]||N||Asynchronous||Output||Direct||RX CDR data lock status signal.
When asserted, indicates that the CDR is in locked-to-data mode. When continuously asserted and does not switch between asserted and deasserted, you can confirm that the CDR is actually locked to data.