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參數(shù)資料
| 型號： | STV8203D |
| 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)： | 17/31頁 |
| 文件大?。?/td> | 192K |
| 代理商： | STV8203D |
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NICON
(NICAM Control)
Address
Type
Reset
: 09
: R/W
: 0000 0000
bit 7
DIF-POL
bit 6
0
bit 5
bit 4
bit 3
ECT
bit 2
MAE
bit 1
0
bit 0
0
TSCTRL
DIF-POL
: controls the polarity of the Q channel in the DQPSKdecoder.Its default value is correctfor
NicamB/G/Land so does not need to be changed.
: These two bits are programmed to chose the decision mode for the zweiton detector as
following :
00
01
10
11
:
3 decisionswith 2048 samplesaccumulation
: bit error rate countingtime : 0 = 128ms,1 = 64ms
: max allowed errors : 0 = 511,1 = 255
Bits2 and3 adjustthebiterror rate(approximate)at whichtheNicamdecodermutes;afixed
hysteresis is provided so that the decoder will unmute only when the BER has dropped to
one quarter of that for muting :
ECT
MAE
0
0
0
1
1
0
1
1
TSCTRL
:
:
:
2 decisionswith 1024 samplesaccumulation
3 decisionswith 1024 samplesaccumulation
2 decisionswith 2048 samplesaccumulation
ECT
MAE
BER Muting Threshold
1 in 112
1 in 224
1 in 56
1 in 112
ERR-COUNT
(NicamError Counter)
Address
: 0A
Type
: R
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
ERROR
Error SignalsCount (averagedover time ECT above)
The value in this register,updatedevery 64msor 128ms,gives an indicationof theNicam bit error rate. It
can thereforebe used to mute the decoder at an error rate below 1 in 56 (=FF if ECT=64ms).
PROGRAMMING THE DEVICE
(continued)
STV8203
17/31
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PDF描述 |
|---|---|
| STV8203 | MULTISTANDARD TV SOUND DEMODULATOR |
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| STV8226 | Multistandard TV Audio Processor and Digital Sound Demodulator |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| STV8216 | 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 |
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