STV0299B Datasheet, PDF (25/36 Pages) STMicroelectronics – QPSK/BPSK LINK IC

STV0299B
5 REGISTER LIST (continued)
Name
HEX Reset Bit
Address Value Position
Signal Description
VERROR REGISTER (Read Only) (refer to Section 4.6.2 on page 15)
VERROR
26
RO
[7:0] Error Rate (Not Signed)
FEC MODE REGISTER (refer to Section 4.6.1 on page 15)
FECM
28
01
[7:4] FEC Mode
This field indicates the FEC Operation mode and the FEC feeding.
0000: DVB (QPSK), FEC feeding IQ/IQ/IQ/IQ
0001: DVB (BPSK extension), FEC feeding IX/IX/IX/IX
001X: Reserved
0100: DSS, FEC feeding IQ/IQ/IQ/IQ
1XXX: Reserved
[3:2] These bits must be programmed to zero.
1 Output Type
1: Serial
0: Parallel
0 Output Impedance
1: High Impedance
0: Normal Impedance
VITERBI THRESHOLD REGISTERS (refer to Section 4.6.2 on page 15)
VTH0
29
1E
[7:0] Rate = 1/2 Threshold.
VTH1
2A
14
[7:0] Rate = 2/3 Threshold.
VTH2
2B
0F
[7:0] Rate = 3/4 Threshold.
VTH3
2C
09
[7:0] Rate = 5/6 Threshold.
VTH4
2D
05
[7:0] Rate = 7/8 or 6/7 Threshold.
PUNCTURE RATE AND SYNCHRO REGISTER (refer to Section 4.6.2 on page 15)
PR
31
1F [7:6:5] These bits must be programmed to zero.
4 Enable punctured rates 7/8 (in DVB) or 6/7 (in DSS).
3 Enable punctured rate 5/6.
2 Enable punctured rate 3/4.
1 Enable punctured rate 2/3.
0 Enable basic or punctured rate 1/2.
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