LC78630 データシートの表示（PDF） - SANYO -> Panasonic

部品番号

コンポーネント説明

メーカー

LC78630

Compact Disk Player DSP

SANYO -> Panasonic 

LC78630E

Note: 1. During a track check operation the TOFF pin goes high and the tracking loop is turned off. Therefore, feed motor forwarding is required.

2. When a track check in/out command is issued the function of the WRQ signal switches from the normal mode subcode Q standby monitor

function to the track check monitor function. This signal goes high when the track count is half completed, and goes low when the count

finishes. The control microprocessor should monitor this signal for a low level to determine when the track check completes.

3. If a track check clear command ($FF) is not issued, the track check operation will repeat. This can be used. For example, to skip over

20,000 tracks, issue a track check 199 code once, and then count the WRQ signal 100 times. This will count 20,000 tracks.

4. After performing a track check operation, use the TJ brake command to lock the pickup onto the track.

7. Sled output; Pin 30: SLD+, pin 31: SLD–

Code

$B8

Command

SLED SET

RES = low

The SLED+ and SLED– outputs can be set independently to one of four levels using this 2-byte command. Neither

SLED+ nor SLED– are output after a reset.

DATA BYTE + $B8

SLED OUTPUT SETTING

SLED+ and SLED– output is selected by the most significant bit in the data byte. The SLED output level is set by the

lower 3 bits. When SLED+ is set, SLED– is automatically set to VSS (SLED off). The inverse is also true.

d7

Output pin

0

SLED+

1

SLED–

d2

d1

d0

0

0

0

0

0

1

0

1

0

0

1

1

1

0

0

Output level

VSS (SLED off)

0.25 VDD

0.5 VDD

0.75 VDD

VDD

8. Error flag output; Pin 61: EFLG, pin 66: FSX

No. 5121-18/33

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