LA9242M 데이터 시트보기 (PDF) - SANYO -> Panasonic

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LA9242M

Analog Signal Processor (ASP) for CD Players

SANYO -> Panasonic 

Microcontroller Command List

MSB LSB

0 0 0 0 0 0 0 0 RESET

Command

00001000

11110000

11111000

11111111

10010000

FOCUS START

2BYTE-COMMAND DETECT

2BYTE-COMMAND DETECT

2BYTE-COMMAND RESET

FOCUS-OFFSET ADJUST START

1 0 0 1 0 0 0 1 FOCUS-OFFSET ADJUST OFF

1 0 0 1 0 0 1 0 TRACK-OFFSET ADJUST START

10010011

10010100

10010101

10010110

TRACK-OFFSET ADJUST OFF

LASER ON

LASER OFF ; F-SERVO ON

LASER OFF ; F-SERVO OFF

1 0 0 1 0 1 1 1 SPINDLE 8CM

1 0 0 1 1 0 0 0 SPINDLE 12CM

1 0 0 1 1 0 0 1 SPINDLE OFF

1 0 0 1 1 0 1 0 SLED ON

1 0 0 1 1 0 1 1 SLED OFF

1 0 0 1 1 1 0 0 E/F BALANCE START

1 0 0 1 1 1 0 1 TRACK-SERVO OFF

1 0 0 1 1 1 1 0 TRACK-SERVO ON

LA9242M

Reset mode

Power-on mode

Non-adjusted

DSP

RESET (NOTHING)

FOCUS START #1

2BYTE-COMMAND DETECT

2BYTE-COMMAND DETECT

2BYTE-COMMAND RESET

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

Notes Concerning Microcontroller Program Creation

1. Commands

After sending the FOCUS START command and the E/F BALANCE START command, send 11111110 (FEH) in

order to clear the internal registers of the IC.

Reason : Although the above commands are executed at point ¡ in the timing chart below, the same commands will

be executed again at point ™ if there is subsequent input to CE as shown below.

Timing

2µs or more

1

2

2µs or more

10µs or more

CE

1µs or more

CL

DAT

1µs or more

LSB

MSB

0 0 0 1 0 0 0 0 : “FOCUS START” command

0 0 1 1 1 0 0 1 : “E/F BALANCE START” command

When sending the TRACK-OFFSET ADJUST START command or the FOCUS-OFFSET ADJUST START

command after either VCC ON (POWER ON RESET), RESET command, or a corresponding OFFSET ADJUST

OFF command, waiting time is necessary as listed below. (Only when a 4.2MHz clock is input.)

TRACK-OFFSET ADJUST START : 4ms or more

FOCUS-OFFSET ADJUST START : 4ms or more

2. E/F balance adjustment

E/F balance adjustments should be made in a bit region of the disc, not a mirrored region.

Since there is no track-kick for LA9242M, measures must be taken during EF balance adjustment to obtain a stable

TE signal. (By a sled movement signal from a microcontroller, for example.)

No.7097–10/20

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