
Si5040
Rev. 1.3 83
Reset settings = 0000 1110
Reset settings = 0000 0000
Register 138. TxLosCtrl
BitD7D6D5D4D3D2D1D0
Name sqmLosEn dLosEn[1:0]
Type RR/WR/WR
Bit Name Function
7:4 Reserved Read returns zero.
3sqmLosEnSignal Quality Monitor LOS Enable.
0 = Disabled.
1 = Signal Quality Monitor alarm causes an LOS alarm.
2:1 dLosEn[1:0] Digital LOS Enable Mode.
00 = Disabled.
01 = Digital LOS alarm is based on the consecutive number of zeros programmed in
Register 145.
10 = Digital LOS alarm is based on the consecutive number of either zeros or ones pro-
grammed in Register 145.
11 = Digital LOS alarm is based on the consecutive number of either zeros or ones pro-
grammed in Register 145.
0 Reserved Read returns zero.
Register 139. TxLosStatus
Bit D7D6D5 D4 D3 D2 D1 D0
Name sqmLOS dLOSlastTrigger dLOS LOS
Type RRR R R R R R
Bit Name Function
7:5 Reserved Read returns zero.
4sqmLOSSignal Quality Monitor LOS.
When the internal signal quality monitor (Reg153) is less than the threshold in registers
154 and 155, this bit will be high. If a LOL (Reg137[4]) is high, this bit is forced to a 0.
3 dLOSlastTrigger Digital Loss of Signal Last Trigger.
Holds a zero or one depending on which bit caused the last digital LOS event.
2dLOSDigital Loss of Signal.
Digital LOS event status bit.
1 Reserved Read returns zero.
0LOSLoss of Signal.
LOS status bit.
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