參數(shù)資料
型號(hào): KA3120
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 運(yùn)動(dòng)控制電子
英文描述: SPINDLE & VOICE COIL MOTOR ONE CHIP DRIVER
中文描述: VOICE COIL MOTOR CONTROLLER, 2 A, PQFP48
封裝: 14 X 14 MM, HEAT SINK, QFP-48
文件頁(yè)數(shù): 27/43頁(yè)
文件大?。?/td> 786K
代理商: KA3120
HDD PRODUCTS
KA3120
27
PRELIMINARY
MIC-99D001
January 1999
Figure 8. MCLK generation flow chart
YES
YES
NO
NO
Running
Acceleration
Start
High frequency
Noise
Elimination
Using filtered FG
Generate start
Counter
Counting
the FG duration
Hard
Switching
Saturation
=
Waiting 2msec
MCLK generation
MCLK = FG(n-1)/2
MASK = 344.45usec
MASK = 1msec
FG polarity
Check = SAME
Keep going
Waiting for FG edge
Store count
Value of the FG
MCLK = FG(n-1)/32
MASK = 344.45usec
Start up
Retry
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