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參數(shù)資料
| 型號： | STV8203 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | MULTISTANDARD TV SOUND DEMODULATOR |
| 中文描述： | 多標(biāo)準(zhǔn)電視伴音解調(diào)器 |
| 文件頁數(shù)： | 26/31頁 |
| 文件大?。?/td> | 192K |
| 代理商： | STV8203 |
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FIFQ2- FIFQ1
(DCO FineFrequency)
Address
: 2C-3A
Type
: R/W
Reset
: 11000100 for FIFQ2 - 11000111for FIFQ1
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
CHANNEL 2 or CHANNEL 1 DCO FINE FREQUENCY (8LSB’s)
TheDCO’s, whichare setto thecarrierfrequencyto be demodulated,areadjustedin twopartsas follows:
C
=
Fc
Fs
48, where Fc is the carrierfrequency,Fs is the crystalfrequency
Takethe nearest integer,Ci, for the 6 bits of the COFQ register
3
Takethe nearest integer,Fi, for the 8 bits of the FIFQregister.
Common frequencieswith Fs = 27MHz:
Ci
decimal
binary
5.5
10
001010
5.74
10
001010
5.85
10
001010
6.0
11
001011
6.552
12
001100
F
= (
C
Ci
)
2
9
Fc (MHz)
Fi
decimal
-38
35
68
-57
-60
binary
11011010
00100011
01000100
11000111
11000100
ACOEFF2 - ACOEFF1
(PLL Loop Filter Proportional Coefficient)
Address
: 2D-3B
Type
: R/W
Reset
: 10010000for ACOEFF2 - 00100011for ACOEFF1
bit 7
bit 6
0
bit 5
COARSE A2 or A1
bit 4
bit 3
bit 2
bit 1
bit 0
DMD SW2 or 1
SIGN A2 or A1
FINE A2 or A1
DMDSW
COARSEA,
SIGNA,FINEA
: Mode switch : 0 = FM, 1 = QPSK
: Programthe PLL(FM/QPSKcarrier recovery) loop filter proportionalcoefficient A:
Acoefficient = coarse+ (sign x fine)
COARSE
00
01
10
11
Value
0
1
1/2
1/4
SIGN
0
1
+
-
FINE
000
001
010
011
100
101
110
111
Value
0
1/2
1/4
1/8
1/16
1/32
1/64
Not used
PROGRAMMING THE DEVICE
(continued)
STV8203
26/31
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| STV8203D | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MULTISTANDARD TV SOUND DEMODULATOR |
| STV8206 | 功能描述:視頻 IC Audio Proc/Dig Demod RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| STV8207 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders |
| STV8207T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders |
| STV8211 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:VIDEO & SOUND IF SYSTEM |
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