3.4.7. RX PMA Status Signals
|Signal Name||Clocks Domain/Resets||Direction||Description|
|fgt_rx_signal_detect [N-1:0]||asynchronous||output||FGT RX signal detect indicator.|
Indicates SATA or USB low frequency periodic signaling (LFPS) signal detection.
|rx_is_lockedtoref [N-1:0]||asynchronous||output||CDR lock status signal.
When lockedtodata stays high, the lockedtoref signal status is insignificant.
|rx_is_lockedtodata [N-1:0]||asynchronous||output||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.
1'b1: keep CDR in lock to reference mode.
1'b0: keep CDR in auto mode.
|fgt_rx_cdr_freeze[N-1: 0]||asynchronous||input||This port is used in GPON to freeze the CDR lock state during inactive time-slots.
This port is used in GPON for CDR freeze signal select. For GPON mode, you must tie this signal to 1'b0.