LA9230M Datasheet, PDF(11/20 Page) Sanyo Semicon Device – Analog Signal Processor ASP for CD players

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LA9230M Datasheet, PDF (11/20 Pages) Sanyo Semicon Device – Analog Signal Processor ASP for CD players

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LA9230M/9231M

Microprocessor Command List

MSB LSB Command

0 0 0 0 0 0 0 0 RESET

0 0 0 0 1 0 0 0 FOCUS START

1 1 1 1 0 0 0 0 2BYTE-COMMAND DETECT

1 1 1 1 1 0 0 0 2BYTE-COMMAND DETECT

1 1 1 1 1 1 1 1 2BYTE-COMMAND RESET

1 0 0 1 0 0 0 0 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

1 0 0 1 0 0 1 1 TRACK-OFFSET ADJUST OFF

1 0 0 1 0 1 0 0 LASER ON

1 0 0 1 0 1 0 1 LASER OFF : F-SERVO ON

1 0 0 1 0 1 1 0 LASER OFF : F-SERVO OFF

1 0 0 1 0 1 1 1 SPINDLE 8CM

1 0 0 1 1 0 0 0 SPINDLE 12 CM

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

Reset mode

Power on mode

Nonadjusted

DSP

RESET(NOTHING)

FOCUS START #1

2BYTE-COMMAND DETECT

2BYTE-COMMAND RESET

Notes Concerning Microprocessor 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 1 in the timing chart below, the same commands will be

executed again at point 2 if there is subsequent input to CE as shown below.

Timing

2 Âµs or more

10 Âµs or more

1 Âµs or more

ââFOCUS STARTââ command

ââE/F BALANCE STARTââ command

When sending a TRACK-OFFSET ADJUST START command or a 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 4.2 MHz clock is input.)

TRACK-OFFSET ADJUST START: 4 ms or more

FOCUS-OFFSET ADJUST START: 30 ms 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. (This is because the E/F balance

adjustment entails about 100 to 200 track kicks.)

Since there is no track-kick for LA9231M, measures must be taken during EF balance adjustment to obtain a stable TE

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

No.5189 - 11/20

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