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參數(shù)資料
| 型號(hào)： | SAA7327 |
| 廠(chǎng)商： | NXP Semiconductors N.V. |
| 英文描述： | Digital servo processor and Compact Disc decoder with integrated DAC for video CD (CD7 II)(應(yīng)用于視頻CD的帶綜合數(shù)模轉(zhuǎn)換器（DAC）的數(shù)字伺服處理器和光盤(pán)譯碼器) |
| 中文描述： | 數(shù)字伺服處理器和光盤(pán)解碼器集成了用于視頻光盤(pán)（CD7抗原二）（應(yīng)用于視頻光碟的帶綜合數(shù)模轉(zhuǎn)換器（DAC）的的數(shù)字伺服處理器和光盤(pán)譯碼器援會(huì)） |
| 文件頁(yè)數(shù)： | 16/68頁(yè) |
| 文件大?。?/td> | 284K |
| 代理商： | SAA7327 |
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2000 Jun 26
16
Philips Semiconductors
Product specification
Digital servo processor and Compact Disc
decoder with integrated DAC for video CD (CD7 II)
SAA7327
7.7.4
M
UTE
,
FULL
-
SCALE
,
ATTENUATION AND FADE
A digital level controller is present on the SAA7327 which
performs the functions of soft mute, full-scale, attenuation
and fade; these are selected via decoder register 0:
Mute: signal reduced to 0 in a maximum of 128 steps;
(3/n) ms
Attenuate: signal scaled by
12 dB
Full-scale: ramp signal back to 0 dB level; from mute
takes (3/n) ms
Fade: activates a 128 stage counter which allows the
signal to be scaled up/down by 0.07 dB steps
– 128 = full-scale
– 120 =
0.5 dB (i.e. full-scale if oversampling filter
used)
– 32 =
12 dB
– 0 = mute.
7.7.5
P
EAK DETECTOR
The peak detector measures the highest audio level
(absolute value) on positive peaks for left and right
channels. The 8 most significant bits are output in the
Q-channel data in place of the CRC bits. Bits 81 to 88
contain the left peak value (bit 88 = MSB) and
bits 89 to 96 contain the right peak value (bit 96 = MSB).
The values are reset after reading Q-channel data via
SDA.
Interpolation
Hold
Interpolation
MGA372
OK
Error
OK
Error
Error
Error
OK
OK
Fig.11 Concealment mechanism.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA7335GP | DSP for CD and DVD-ROM systems |
| SAA7335 | DSP for CD and DVD-ROM systems(在CD和DVD-ROM應(yīng)用中的DSP) |
| SAA7341 | COMS Digital decoding IC for Compact Disc |
| SAA7341GP | COMS Digital decoding IC for Compact Disc |
| SAA7345 | Bitstream conversion ADC for digital audio systems |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA7327H | 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Digital servo processor and Compact Disc decoder with integrated DAC for video CD CD7 II |
| SAA7327H/T/M2B,557 | 功能描述:視頻 IC COMPACT DISC SYSTEMS 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 |
| SAA7327HBG | 功能描述:視頻 IC COMPACT DISC SYSTEMS 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 |
| SAA7335 | 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:DSP for CD and DVD-ROM systems |
| SAA7335GP | 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:DSP for CD and DVD-ROM systems |
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