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參數(shù)資料
| 型號(hào)： | LC78621E |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Compact Disc Player DSP(用于CD播放器的8位DSP) |
| 中文描述： | 光碟機(jī)的DSP（用于光盤播放器的8位數(shù)字信號(hào)處理器） |
| 文件頁數(shù)： | 24/34頁 |
| 文件大小： | 417K |
| 代理商： | LC78621E |
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18. Digital Filter Outputs; Pin 33: LRCKO, pin 34: DFORO, pin 35: DFOLO, pin 36: DACKO
Data for use with an external D/A converter is output MSB first from DFORO and DFOLO in synchronization with
the falling edge of DACKO. These pins are provided so that an external D/A converter can be used if desired.
Although this output is from 8
×
oversampling filters for normal-speed playback, 4
×
oversampling filters are used
in double-speed playback.
19. One-bit D/A Converter
The LC78621E PWM block outputs a single data value in the range –3 to +3 once every 64fs period. To reduce
carrier noise, this block adopts an output format in which each data switching block is adjusted so that the PWM
output level does not invert. Also, the attenuator block detects 0 data and enters muting mode so that only a 0 value
(a 50% duty signal) is output.
This block outputs a positive phase signal to the LCHP (RCHP) pin and a negative phase signal to the LCHN
(RCHN) pin. High-quality analog signals can be acquired by taking the differences of these two output pairs using
external low-pass filters.
The LC78621E includes built-in suppression resistors in each of the LCHP/N and RCHP/N pins.
PWM output format
PWM output example
No. 5223-24/34
LC78621E
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LC78622E | Compact Disc Player DSP(用于CD播放器的8位DSP) |
| LC78622NE | Compact Disc Player DSP(用于CD播放器的8位DSP) |
| LC78624E | Compact Disc Player DSP(用于CD播放器的8位DSP) |
| LC78625E | SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs |
| LC78625 | SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LC78622E | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disc Player DSP |
| LC78622NE | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disc Player DSP |
| LC78624E | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disc Player DSP |
| LC78625 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disc Player DSP |
| LC78625E | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disc Player DSP |
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