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參數(shù)資料
| 型號： | LC78626E |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | 16-bit fixed point DSP with Flash |
| 中文描述： | 具有閃存的 16 位定點 DSP |
| 文件頁數(shù)： | 13/32頁 |
| 文件大?。?/td> | 475K |
| 代理商： | LC78626E |
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5
The Servo Command Functions
Pin 62: RWC, Pin 63: COIN, Pin 64: CQCK
Various commands can be executed by setting RWC to high and by inputting the command from COIN synchronized
with the CQCK clock. The commands are executed beginning with the falling edge of RWC.
Focus start
Track jump
Mute control
Disk motor control
Other control
Single-byte commands
Track check
Two-byte command (two sets of RWC).
Digital attenuator
General port I/O settings
Two-byte commands (once set of RWC).
(1) Single-byte Commands
(2) Two-byte commands (RWC 2 set: for the track count)
(3) Two-byte commands (RWC 1 set: digital attenuation and setting the general I/O port)
(4) Eliminating Command Noise
This command makes it possible to reduce the noise that is mixed into the CQCK clock. This is effective for noise of
less than 500 ns; however, the CQCK timing must be set to have 1 μs or more for t
WL
, t
WH
, and t
SU
.
No. 5692-13/32
LC78626E
Code
COMMAND
RES = low
$EF
Command input noise reduction mode
$EE
Resets the command input noise reduction mode.
G
G
Command ($F0, $F8)
Data ($08 to $FE), command ($FF)
At least 1 μs
Data
Commands ($81 to $87, $DB, $DC)
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