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參數(shù)資料
| 型號： | STV0299B |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | QPSK/BPSK LINK IC |
| 中文描述： | 調(diào)制/ BPSK調(diào)制連接IC |
| 文件頁數(shù)： | 26/36頁 |
| 文件大?。?/td> | 242K |
| 代理商： | STV0299B |
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STV0299B
5
REGISTER LIST
(continued)
26/36
VITERBI AND SYNCHRO SEARCH REGISTER
(refer to Section 4.6.2
on page 15
)
VSEARCH
32
19
7
0: Automatic search mode
1: Manual search mode
6
Freeze
[5:4]
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)
[3:2]
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)
[1:0]
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)
Name
HEX
Address
Reset
Value
Bit
Position
Signal Description
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