STV0196 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STV0196' PDF : 23 Pages View PDF
STV0196B
FUNCTIONAL DESCRIPTION (continued)
I.4 - Register Map
REGISTER HEX 00
INPUT CONFIGURATION REGISTER (R/W)
Reset Value : Hex 04
0 -Q(1) or Q(0) input
1 Signed (1) or positive (0) I & Q inputs
2 Nyquist filtering on (1) / off (0)
3 BPSK (1), QPSK(0)
4 To be set to 0.
5 To be set to 0.
6 To be set to 0.
7 To be set to 0.
REGISTERS HEX 01 TO HEX 05
VITERBI, PUNCTURE RATE THRESHOLDS (R/W)
Reset Value : Hex 20
rate
Hex01 VTH0 0 Th6 Th5 Th4 Th3 Th2 Th1 Th0 1/2
Hex02 VTH1 0 Th6 Th5 Th4 Th3 Th2 Th1 Th0 2/3
Hex03 VTH2 0 Th6 Th5 Th4 Th3 Th2 Th1 Th0 3/4
Hex04 VTH3 0 Th6 Th5 Th4 Th3 Th2 Th1 Th0 5/6
7/8
Hex05 VTH4 0 Th6 Th5 Th4 Th3 Th2 Th1 Th0 or
6/7
REGISTER HEX 06
VSEARCH (VITERBI) (R/W)
Reset Value : Hex 19
0
1
H[1..0] Sync counter hysteresis value
2
3
T[1..0] Sync search time out
4
5
SN[1..0]
VITERBI error rate averaging period.
C/N indicator averaging period.
6F
VITERBI operating status freeze (1)
7 A/M (0) automatic, (1) manual
REGISTER HEX 07
VERROR REGISTER (Read only)
REGISTER HEX 08
VSTATUS REGISTER (Read only)
0
1 PR[2..0] Current puncture rate identification
2
3 LK
(1) synchro found,
(0) searching puncture rate
4 PRF (1) puncture rate found,
(0) searching puncture rate
5 unused set to (0)
6 unused set to (0)
7 CF
(1) carrier found, (0) searching carrier
REGISTER HEX 09
PUNCTURE RATE ENABLE (R/W)
Reset Value : Hex 10 (mode A)
0 E0 (1) Puncture 1/2 enabled, (0) disabled
1 E1 (1) Puncture 2/3 enabled, (0) disabled
2 E2 (1) Puncture 3/4 enabled, (0) disabled
3 E3 (1) Puncture 5/6 enabled, (0) disabled
4 E4 (1) Puncture7/8 (mode A), 6/7 (mode B)
(0) disabled
5
6 unused
7
REGISTER HEX 0A
RS REGISTER (R/W)
Reset Value : Hex B8
0 RS0 (1) output clock stopped during parity,
(0) continuous
1 RS1 Output clock polarity
2 RS2 (1) all synchro words are Hex47,
(0) synchro inversion disabled
3 RS3 Write error bit
4 RS4 Descrambler on (1), off (0)
5 RS5 Reed-Solomon on (1), off (0)
6 RS6 Normal operation (0), Reed-Solomon
correction bytes to output (1)
7 RS7 De-interleaver on (1), off (0)
5/23
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