Forward Error Correction MT312
B2:
B1:
B0:
High = Viterbi BER monitor period reached
High = De-scrambler lock lost
High = De-scrambler lock
Reading an Interrupt register resets that register.
7.2.2 FEC Status. Register 6 (R)
Def
hex
NAME
ADR
B7
B6
B5
B4
B3
B2
B1
B0
FEC STATUS
06
FEC STATUS[7:0]
R
00
B7:
Reserved
B6-4:
Viterbi coding rate
B6-4
Code rate indication
0
1
2
3
4
5
1/2
2/3
3/4
5/6
6/7
7/8
Table 3 - Viterbi code rate indication
B3:
B2:
B1:
B0:
High = De-scrambler lock
High = Byte Align lock
High = Viterbi lock
Reserved
7.2.3 Measured Signal to Noise Ratio. Registers 9 - 10 (R)
Def
hex
NAME
ADR
B7
B6
B5
B4
B3
B2
B1
B0
M SN R H
M SNR L
09
10
Reserved
M SNR[14:8] Measured SNR (high byte)
M SNR[7:0] Measured SNR (low byte)
R
R
00
00
B15:
Reserved
49
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