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参数资料
| 型号： | LA9231M |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封装： | QIP-64 |
| 文件页数： | 3/20页 |
| 文件大小： | 193K |
| 代理商： | LA9231M |
Microprocessor Command List
MSB
LSB
Command
Reset mode
Power on mode
DSP
00000000
RESET
RESET(NOTHING)
00001000
FOCUS START
FOCUS START #1
11110000
11111000
11111111
2BYTE-COMMAND DETECT
2BYTE-COMMAND RESET
2BYTE-COMMAND DETECT
2BYTE-COMMAND RESET
10010000
FOCUS-OFFSET ADJUST START
—
10010001
FOCUS-OFFSET ADJUST OFF
V
—
10010010
TRACK-OFFSET ADJUST START
—
10010011
TRACK-OFFSET ADJUST OFF
V
—
10010100
10010101
LASER ON
LASER OFF : F-SERVO ON
—
10010110
LASER OFF : F-SERVO OFF
V
—
10010111
SPINDLE 8CM
—
10011000
SPINDLE 12 CM
V
—
10011001
SPINDLE OFF
—
10011010
SLED ON
V
—
10011011
SLED OFF
—
10011100
E/F BALANCE START
Nonadjusted
—
10011101
TRACK-SERVO OFF
V
—
10011110
TRACK-SERVO ON
—
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.
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.)
Timing
2 s or more
1 s or more
10 s or more
1 s or more
2 s or more
‘‘FOCUS START’’ command
‘‘E/F BALANCE START’’ command
LA9230M/9231M
No.5189 - 11/20
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