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參數(shù)資料
| 型號(hào)： | LC78631E |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP80 |
| 封裝： | QFP-80 |
| 文件頁數(shù)： | 19/34頁 |
| 文件大?。?/td> | 502K |
| 代理商： | LC78631E |
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No. 5342-26/34
LC78631E
Ports set to be output pins can be independently set to be either high or low by the port output two-byte command.
The lower 6 bits of the data byte correspond to the ports.
dn = 1 .................A high level is output from Pn, assuming it is set up for output.
dn = 0 .................A low level is output from Pn, assuming it is set up for output.
24. Variable pitch playback; Pin 1: VPDO, pin 80 VCOC
The LC78631E includes a variable pitch PLL circuit, and the disk rotation rate and the ROMXA output data transfer
rate can be varied by varying the clock used as the time base in 0.1% increments over a range of ±13%. A variable
pitch circuit is formed by connecting a variable pitch low-pass filter to the VPDO and VCOC pins.
Note: Variable pitch playback is not supported at 4
× speed.
The amount of variation is set by the data byte value n (as a two’s complement number) and the variable pitch data
set two-byte command.
Amount of change = n/10 [%] (n = –128 to +127)
DATA BYTE + $DC
PORT OUTPUT
DATA BYTE + $DA
VARIABLE PITCH DATA SET
Code
Command
RES = low
$D9
VARIABLE PITCH ON
$D8
VARIABLE PITCH OFF
q
$DA
VARIABLE PITCH DATA SET
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| LC78632 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Compact Disk Player DSP |
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| LC78637E-E | 制造商:ON Semiconductor 功能描述: |
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