參數(shù)資料
型號(hào)： STV8287
廠商： 意法半導(dǎo)體
英文描述： Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders
中文描述： 數(shù)字音頻解碼器/處理器為A2和麗音電視/錄像機(jī)
文件頁數(shù)： 48/149頁
文件大?。?/td> 2775K
代理商： STV8287
Register List
STV82x7
48/149
12
Register List
Note:
The unused bits (defined as ‘Reserved’) in the I2C registers must be kept to zero.
The system clock registers (from address 08h to 0Bh and from address 5Ah to 5Dh) do not need to
be modified if a standard 27 MHz quartz crystal oscillator is used.
The default values of the demodulator registers (from address 0Ch to 55h) are for optimum
performances and any change is not recommended, except for:
●
AGC_GAIN
(0Fh) to adjust AGC gain for AM carrier in L/L' standard (AGC used in open loop).
●
CAROFFSET1
(22h) and
CAROFFSET2
(3Ah) to compensate IF carrier frequency with an
out-of-standard offset.
●
Soundlevel Prescaling
PRESCALE_AM
(94h),
PRESCALE_FM
(95h),
PRESCALE_NICAM
(96h) and
PRESCALE_SCART
(97h) to equalize demodulated or external audio signal before
audio processing. Peak detector registers
PEAK_DET_INPUT
(9Dh),
PEAK_DET_L
(9Eh),
PEAK_DET_R
(9Fh),
PEAK_DET_L_R
(A0h) can be used to measure internal sound level.
Sound source selection for each audio output channel Loudspeakers, Headphone and SCART to
be done using
AUDIO_MATRIX_INPUT
(A2h).
In Multi-lingual mode,
AUDIO_MATRIX_LANGUAGE
(A4h) selects separately the language for
each audio output channel.
Register
AUTOSTD_CTRL
(8Ah) is used to select between L/L' or D/K/K1/K2/K3 standard which
can be discriminated automatically. To be used also to change maximum FM deviation (125 kHz, by
default) in case of wide overmodulation.
AUTOSTD_STANDARD_DETECT
(8Bh) and
AUTOSTD_STEREO_DETECT
(8Ch) to define the list of mono and stereo standards to be
recognized automatically.
Note:
() used in reset value column means that the bit or the byte is read-only.
(S) symbol indicates that the field value is represented in signed binary format.
(*) The field AGC_ERR[4:0] (
AGC_GAIN
) can be written by user if the bit AGC_CMD (
AGC_CTRL
)
is set to one (by default controlled by Automatic Standard Recognition System). To be used to
adjust manually the input gain of analog AGC amplifier for AM carrier (L/L').
相關(guān)PDF資料
PDF描述
STV8257 Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
STV8287D 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
STV8287DSX 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
STV8287DSXT 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
STV8287DT 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
STV8287T 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
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