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參數(shù)資料
| 型號： | STV0299B |
| 廠商： | 意法半導體 |
| 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)： | 24/36頁 |
| 文件大?。?/td> | 242K |
| 代理商： | STV0299B |
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STV0299B
5
REGISTER LIST
(continued)
24/36
AGC2 INTEGRATOR REGISTERS
(refer to Section 4.2.5
on page 12
)
AGC2I1 (MSB)
18
[7:0]
AGC2 Integrator MSB Bits
(Not Signed)
AGC2I2 (LSB)
19
[7:0]
AGC2 Integrator LSB Bits
(Not Signed)
TIMING FREQUENCY REGISTER
(refer to Section 4.3.1
on page 13
)
RTF
1A
[7:0]
Signed Number
VSTATUS REGISTER (Read Only)
(refer to Section 4.6.3
on page 16
)
VSTATUS
1B
RO
7
Carrier Found Flag
When the Carrier Found (CF) flag (see Chapter 4.4 on page 14) is
set, it indicates that a QPSK signal is present at the input of the Viterbi
decoder.
[6:5]
Not relevant.
4
Puncture Rate Found
The Puncture Rate Found (PRF) bit indicates the state of the punc-
ture rate research: 0 for searching and 1 when found. This bit is irrele-
vant in manual mode.
3
Locked/Searching Sync Word
The LK bit indicates the state of the sync word search: 0 for searching
and 1 when found.
[2:0]
Current Puncture Rate, PR[2:0]
The Current Puncture Rate (CPR) bits hold the current puncture rate
indices, as follows:
100: Basic 1/2 (modes DVB and DSS) or Punctured 1/2 (reserved
mode)
000: Punctured 2/3
001: Punctured 3/4
010: Punctured 5/6
011: Punctured 7/8 (modes DVB and DSS) or 6/7 (reserved mode)
CARRIER LOCK DETECTOR VALUE REGISTER
(refer to Section 4.4.2
on page 14
)
CLDI
1C
[7:0]
Signed Number
ERROR COUNT REGISTERS
(refer to Section 4.6.4
on page 16
)
ERRCNT_HIGH
1D
[7:0]
MSB byte (Not Signed)
ERRCNT_LOW
1E
[7:0]
LSB byte (Not Signed)
SYMBOL FREQUENCY REGISTERS
(refer to Section 4.3.1
on page 13
)
SFRH
1F
80
[7:0]
Symb_freq
(MSBs)
The reset value of Hex 800000 corresponds to f
M_CLK
/2.
SFRM
20
00
[7:0]
Symb_freq
(Middle SB
S
)
SFRL
21
00
[7:4]
Symb_freq
(LSB
S
)
[3:0]
These bits must be programmed to zero.
CARRIER FREQUENCY REGISTER
(refer to Chapter 4.4
on page 14
)
CFRM
22
[7:0]
Derotator Frequency (MSB) (signed value)
CFRL
23
[7:0]
Derotator Frequency (LSB) (signed value)
NOISE INDICATOR REGISTERS (Read Only)
(refer to Chapter 4.5
on page 14
)
NIRH
24
RO
[7:0]
Noise Indicator (MSB)
(Not Signed)
NIRL
25
RO
[7:0]
Noise Indicator (LSB)
(Not Signed)
Name
HEX
Address
Reset
Value
Bit
Position
Signal Description
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