參數(shù)資料
型號(hào)： LC78622E
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(yè)數(shù)： 19/29頁(yè)
文件大?。?/td> 378K
代理商： LC78622E
No. 5480-19/29
LC78622E
11. Bilingual Function
Following a reset or when a stereo (28H) command has been issued, the left and right channel data is output to the
left and right channels respectively.
When an Lch set (29H) command is issued, the left and right channels both output the left channel data.
When an Rch set (2AH) command is issued, the left and right channels both output the right channel data.
12. De-Emphasis; Pin 29: EMPH
The preemphasis on/off bit in the subcode Q control information is output from the EMPH pin. When this pin is
high, the LC78622E internal de-emphasis circuit operates and the digital filters and the D/A converter output de-
emphasized data.
13. Digital Attenuator
Digital attenuation can be applied to the audio data by setting the RWC pin high and inputting the corresponding
two-byte command to the COIN pin in synchronization with the CQCK clock.
Attenuation setup
Since the attenuation level is set to the muted state (a muting of –
∞
is specified by an attenuation coefficient of
00H) after the attenuation level is reset, the attenuation coefficient must be directly set to EEH (using the ATT
DATA SET command) to output audio signals. Note that the attenuation level can be set to one of 239 values from
00H to EEH.
These two-byte commands differ from the two-byte commands used for track counting in that it is only necessary
to set RWC once and a two-byte command reset is not required. After inputting the target attenuation level as a
value in the range 00H to EEH, sending an attenuator step up/down command will cause the attenuation level to
approach the target value in steps of 4, 8, or 16 units as specified in synchronization with rising edges on the LRSY
input. However, the ATT DATA SET command sets the target value directly. If a new data value is input during
the transition, the value begins to approach the new target value at that point. Note that the UP/DOWN distinction
is significant here.
MSB
LSB
Command
RES = low
G
G
0 0 1 0 1 0 0 0
STO CONT
0 0 1 0 1 0 0 1
Lch CONT
0 0 1 0 1 0 1 0
Rch CONT
MSB
LSB
Command
RES = low
1 0 0 0 0 0 0 1
ATT DATA SET
DATA 00H set
(MUTE –
∞
dB)
1 0 0 0 0 0 1 0
ATT 4 STEP UP
1 0 0 0 0 0 1 1
ATT 4 STEP DOWN
1 0 0 0 0 1 0 0
ATT 8 STEP UP
1 0 0 0 0 1 0 1
ATT 8 STEP DOWN
1 0 0 0 0 1 1 0
ATT 16 STEP UP
1 0 0 0 0 1 1 1
ATT 16 STEP DOWN
相關(guān)PDF資料
PDF描述
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
LC78626KE Compact Disc Player DSP(用于CD播放器的8位DSP)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
LC78626 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:DSP for Compact Disk Players
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