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参数资料
| 型号： | LC78625E |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP80 |
| 封装： | QFP-80 |
| 文件页数： | 16/35页 |
| 文件大小： | 535K |
| 代理商： | LC78625E |
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No. 5502-23/35
LC78625E
Code
COMMAND
RES = L
$28
STO CONT
●
$29
Lch CONT
$2A
Rch CONT
Code
COMMAND
RES = L
$81
ATT
DATA
SET
DATA 00H Set
$82
ATT
4STEP
UP
(MUTE –∞dB)
$83
ATT
4STEP
DOWN
$84
ATT
8STEP
UP
$85
ATT
8STEP
DOWN
$86
ATT
16STEP
UP
$87
ATT
16STEP
DOWN
15. Bilingual function
Following a reset or when a stereo command ($28) has been issued, the left and right channel data is output to the left
and right channels respectively.
When an Lch set command ($29) is issued, the left and right channels both output the left channel data.
When an Rch set command ($2A) is issued, the left and right channels both output the right channel data.
16. De-emphasis; Pin 32: EMPH
The pre-emphasis on/off bit in the subcode Q control information is output from the EMPH pin. When this pin is
high, the LC78625E internal de-emphasis circuit operates and the digital filters and the D/A converter output de-
emphasized data.
17. 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 LC78625E 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. (See the item on two-byte commands (RWC set once) on
page 11.)
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.
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相关代理商/技术参数 |
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| LC78626 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:DSP for Compact Disk Players |
| LC78626E | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:DSP for Compact Disk Players |
| LC78626KE | 制造商:未知厂家 制造商全称:未知厂家 功能描述:CD-Player Processor/Controller |
| LC78628 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Compact Disc Player DSP with Built-in HDCD Decoder |
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