參數(shù)資料
型號(hào)： STV8236
廠(chǎng)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)： 23/97頁(yè)
文件大?。?/td> 1871K
代理商： STV8236
23/97
STV82x6
Audio Processor Block
The Beeper operates in one of two modes:
●
Pulse mode
(beep applications) A tone with a programmable short duration (between 128 ms
and 1 s) is generated. Afterwards, the beeper is automatically disabled and the output is
switched back to the audio signal.
●
Continuous mode
(alarm application) A tone with a programmable long duration is generated.
Its start and stop controls must be programmed by I2C.
In both modes, it is recommended to use the mute function to smooth the audio-to-beeper and
beeper-to-audio (Continuous mode only) transitions. The second transition is automatically muted
in Pulse mode. Beeper parameters are controlled in register
BEEPER_CTRL
.
The beeper tone level and frequency are programmed in register
BEEPER_TONE
. The level (or
volume) ranges between 0 dB and -93 dB in steps of 3 dB and the tone frequency ranges between
62.2 Hz and 8 kHz in steps of 1 octave.
A beep generator is shared only by the Loudspeaker or Headphone outputs. Therefore, in the event
of simultaneous beeps when in Pulse mode, only the first beep will define the effective duration that
will be the same for both outputs.
Note:
The audio output is not affected by the Automatic Mute Control of Automatic Standard Recognition
function when the beeper is activated.
3.10
SRS 3D Surround (STV8226/36 only)
In addition to ST WideSurround, the STV8226/36 provides SRS 3D Stereo and Mono outputs
which are spatial effects patented by SRS Labs. The SRS system is available on the IC when the
SRS_ON bit of register
CUT_ID
is set (STV8226/36 identification). ST and SRS Surround
systems cannot be used simultaneously. These signals are output only on the Loudspeaker path.
Figure 13: Pulse Mode
Figure 14: Continuous Mode
0.125s < T < 1s
62.5 Hz < F < 8 kHz
BEEP_ON = 1
BEEP_ON = 0
T predefined
62.5 Hz < F < 8 kHz
BEEP_ON = 1
BEEP_ON = 0
T defined by I2C write
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
STV8237 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders
STV8237T 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders
STV8247 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders
STV8247_06 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders
STV8247D 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders
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