參數(shù)資料
型號: LA9220M
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP64
封裝: QIP-64
文件頁數(shù): 3/20頁
文件大小: 247K
代理商: LA9220M
LA9220M
No.5188–11/20
Notes Concerning Microprocessor Program Creation (Supplementary)
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 chart
2. When sending the TRACK-OFFSET ADJUST START command or the FOCUS-OFFSET ADJUST START
command after either the 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 : 30ms or more
3. 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.)
Pattern Design Notes
To prevent signal jump-in from CV+ (pin 40) to RFSM (pin 41), a shielding line is necessary in between.
MSB
LSB
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