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參數(shù)資料
| 型號： | 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： | 光碟機的DSP（用于光盤播放器的8位數(shù)字信號處理器） |
| 文件頁數(shù)： | 26/34頁 |
| 文件大小： | 417K |
| 代理商： | LC78621E |
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The ASDACK (pin 38), ASDFIN (pin 39), ASDFIR (pin 40), and ASLRCK (pin 41) pins must be held low if this
mode is not used.
It is possible to input the signals from the ROMXA (pin 44), C2F (pin 45), LRSY (pin 42), and CK2 (pin 43) pins
to an antishock LSI (the Sanyo LC89151) and re-input the signals output by the antishock LSI to the ASDFIN (pin
39), ASLRCK (pin 41), and ASDACK (pin 38) pins. These signals are then processed by the attenuator, 8
×
oversampling digital filter, and one-bit D/A converter circuits and output as audio signals.
In antishock systems, the signal-processing block must operate in double-speed playback mode for data output to
the antishock LSI, and the audio playback block (the attenuator, 8
×
oversampling digital filter, and one-bit D/A
converter circuits) must operate at normal speed. This means that the control microprocessor must issue both the
ANTIC on command (6CH) as well as the DF normal speed on command (6FH).
The ANTIC off command (6BH) clears antishock mode.
23. CONT Pin; Pin 73: CONT
The CONT pin goes high when a CONT SET command is issued.
24. Clock Oscillator; Pin 77: X
IN
, pin 78: X
OUT
No. 5223-26/34
LC78621E
MSB
LSB
Command
RES = low
0 1 1 0 1 1 0 0
ANTIC ON
0 1 1 0 1 0 1 1
ANTIC OFF
G
G
0 1 1 0 1 1 1 1
0 1 1 0 1 1 1 0
DF NORMAL SPEED ON (only in antishock mode)
DF NORMAL SPEED OFF (only in antishock mode)
G
G
MSB
LSB
Command
RES = low
0 0 0 0 1 1 1 0
CONT SET
Low
G
G
1 0 0 0 1 0 1 1
CONT AND CD-ROM XA RESET
MSB
LSB
Command
RES = low
G
G
1 0 0 0 1 1 1 0
OSC ON
1 0 0 0 1 1 0 1
OSC OFF
1 1 0 0 0 0 1 0
NORMAL-SPEED PLAYBACK
G
G
1 1 0 0 0 0 0 1
DOUBLE-SPEED PLAYBACK
The clock that is used as the time base is generated by connecting a 16.9344
MHz oscillator element between these pins. The OSC OFF command turns off
both the VCO and crystal oscillators. Double-speed playback can be specified
by microprocessor command.
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| LC78622E | Compact Disc Player DSP(用于CD播放器的8位DSP) |
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| 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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