Datacom Systems D56 Dokumentacja Strona 80

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Si5040
80 Rev. 1.3
Reset settings = 1001 0100
Register 135. TxConfig
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name CDRLTDATA uselolMode lolMode ltr
Type R/W R
Bit Name Function
7:5 Reserved Do not change; must only write 100 to these bits.
4 CDRLTDATA 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.
3 uselolMode Loss of Lock Mode Overwrite.
0 = Auto select LOL mode is based upon the tx CMU mode. The selected LOL mode can
be read from the LOL mode bit 2.
1 = LOL is based on lolMode bit2.
2 lolMode 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.
1ltrLock to Reference.
0 = Normal operation.
1 = CMU is locked to reference clock.
0 Reserved Read returns zero.
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