Si5040
Register 7. RxConfig
Bit
Name
Type
D7
R
D6
lolOnLOS
R/W
D5
ltrOnLOS
R/W
D4
CDRLTDATA
R/W
D3
uselolMode
R/W
D2
lolMode
R/W
D1
ltr
R/W
D0
rxRefclkEn
R/W
Reset settings = 0001 0101
Bit
7
6
5
4
3
2
1
0
50
Name
Reserved
lolOnLOS
ltrOnLOS
CDRLTDATA
uselolMode
lolMode
ltr
rxRefclkEn
Function
Read returns zero.
Loss of Lock on Loss of Signal.
0 = Normal LOL operation.
1 = Assert loss of lock on a loss of signal condition.
Lock to Reference on Loss of Signal.
0 = Normal LTR operation.
1 = Assert lock to reference on a loss of signal condition.
CDR Lock Acquisition Options when Lock to Reference is enabled.
0 = CDR phase locks to reference clock.
1 = CDR continues to attempt to lock to data.
Loss of Lock Mode Overwrite.
0 = Frequency LOL if RX ltr = 1 and SQM LOL if RX ltr = 0. The LOL mode can be read
from the lolmode bit 2.
1 = LOL is based on lolMode bit2.
Loss of Lock Mode (This bit is only used if bit3 = 1).
0 = LOL bases on frequency difference between the reference clock and received data.
1 = LOL bases on SQM.
Lock to Reference.
0 = Normal operation.
1 = RX CMU locked to reference clock.
Receiver Reference Clock Enable.
0 = Reference clock not used by the receiver (incorrect rate).
1 = Reference clock applied to the receiver.
Rev. 1.3
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