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參數(shù)資料
| 型號(hào)： | STV8216 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Multistandard TV Audio Processor and Digital Sound Demodulator |
| 中文描述： | 多標(biāo)準(zhǔn)電視音頻處理器和數(shù)字聲音解調(diào)器 |
| 文件頁(yè)數(shù)： | 27/97頁(yè) |
| 文件大?。?/td> | 1871K |
| 代理商： | STV8216 |
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STV82x6
Additional Controls and Flags
5
Additional Controls and Flags
5.1
Interrupt Request
The identified TV sound standard is displayed in register
AUTO_STAT
. Each change in the detected
standard is flagged to the host system via hardware pin IRQ. The flag must be reset by re-
programming the IRQ bit in register
AUTO_CTRL
and then checking the detected standard status
by reading registers AUTO_STAT, NICAM_STAT, ZWT_STAT and CH_MX.
5.2
I2C Bus Expander
Pins BUS0 and BUS1 can be used to control external switchable IF SAW filters or audio switches.
These pins can be directly programmed by register
CTRL
.
5.3
Stereo Flag
For Loudspeakers only, a Stereo Mode Detection flag (the ST_ID bit in register
AUTO_STAT
) is set
when a demodulated source is selected and a stereo standard is detected. The stereo flag is also
output on pin ST in order to control an external indicator (e.g. LED). The stereo mode is also
displayed by status register
AUTO_STAT
.
CAUTION:
When the I2S input is selected, the stereo flag is no longer available on pin ST.
5.4
Headphone Detection
For the headphone, the HPD input can be used to automatically mute the Loudspeaker and
Subwoofer outputs when the HPD_ON bit is set in register
ANA_LS_HP
(active low). The HPD pin
must be set for the mute function to be active.
Figure 16: Headphone Detection
A
Mute Control
Headphone
Detection
Left
Right
Sub-
woofer
I2C Control
STV82x6
Loudspeaker
Audio Processing
Headphone
Audio Processing
Subwoofer
Audio Processing
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| STV8217 | 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 |
| STV8217T | 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 |
| STV8223 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TV Video Receiver Circuit |
| STV8223A | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:MULTISTANDARD VIDEO AND SOUND IF SYSTEM WITH AUDIO AND VIDEO SWITCHES |
| STV8223A1 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TV Video Receiver Circuit |
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