STV0299B STMicroelectronics, STV0299B Datasheet - Page 26

• Manufacturer Part Number: STV0299B
• Manufacturer: STMicroelectronics

Specifications of STV0299B

• Pin Count: 64
• Screening Level: Commercial
• Lead Free Status / Rohs Status: Specific Sites Compliant

STV0299B
5
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VITERBI AND SYNCHRO SEARCH REGISTER (refer to Section 4.6.2 on page 15)
VSEARCH
REGISTER LIST (continued)
Name
Address
HEX
32
Reset
Value
19
Position
[5:4]
[3:2]
[1:0]
Bit
7
6
0: Automatic search mode
1: Manual search mode
Freeze
SN[1:0]
This is the averaging period. The field gives the number of bits
required to calculate the rate error.
00 = 1024
01 = 4096
10 = 16384
11 = 65536
Reset Value: SN = 01 (4096 bits)
TO[1:0]
This is the time out value (given in 1024-bit periods). This field is used
to program the maximum duration of the synchro word research in
automatic mode. If no sync is found within this duration, and if bit RS6
(Sync Enable) is set in the Reed-Solomon register, another phase or
puncture rate is tried. If RS6 = 0, the time-out has no effect.
00 = 16
01 = 32
10 = 64
11 = 128
Reset Value: TO = 10 (64k bit periods)
H[1:0]
This is the hysteresis value. This field is used to program the maxi-
mum value of the Sync counter. The unit is the block duration
(204 bytes in DVB, 147 in DSS).
00: 16
01: 32
10: 64
11: 128
Reset Value: H = 01 (32 blocks)
Signal Description