SPINDLE MOTOR DRIVER
MITSUBISHI
M56787FP
SPINDLE MOTOR DRIVER
DESCRIPTION
The M56787FP is a semiconductor integrated ...
Description
MITSUBISHI
M56787FP
SPINDLE MOTOR DRIVER
DESCRIPTION
The M56787FP is a semiconductor integrated circuit in order to drive the spindle motor.
PIN CONFIGURATION (TOP VIEW)
N.C 1 2 3 4 5 6 7 8 9 42 41 40 39 38 37 36 35 34 N.C N.C W V U MGND TP
FEATURES
q Low motor echo noise. q 3.3V DSP available. q Large power dissipation package(Power Package). q High motor drive current . q Wide dynamic range. q Motor current control for both motor torque directions. q Reverse torque mode select [SHORT BRAKING,etc]. q Sleep mode. q FG signal output terminal. q FG pulse select. q Automatic stop.
N.C S/S FGS FG CI BRS
M56787FP
APPLICATION
CD-ROM, DVD, DVD-ROM, DVD-RAM etc.
GND
10 11 12 13 14 RS VCC2 EC ECR VCC1 HB N.C 15 16 17 18 19 20 21
33 32 31 30 29 28 27 26 25 24 23 22 HwHw+ HvHv+ HuHu+ N.C N.C: no connection GND
Outline 42P9R-A
BLOCK DIAGRAM
U 38 CI 6 CURRENT SENSE & LIMIT V 39 W 40 MGND 37
S/S 3
VCC1
19
8 to 14
RS VCC2
15 16
GND
BRS
7
29 to 35
BRAKING MODE CHANGE 120˚ MATRIX REVERSE DETECT TSD
GND
1 2 21 FG 5 FG & SELECT FGS 4 23 Hu+ 24 Hu25 Hv+ 26 Hv27 Hw+ 28 Hw20 HB 36 TP 17 EC 18 ECR + + + HALL BIAS CONTROL 22 41 42
N.C N.C N.C N.C N.C N.C
MITSUBISHI
M56787FP
SPINDLE MOTOR DRIVER
PIN DESCRIPTIONS
Pin No.
1 2 3 4 5 6 7 8
– 14
15 16 17 18 19 20 21
Symbol N.C N.C S/S FGS FG CI BRS GND RS VCC2 EC ECR VCC1 HB N.C
Function
Pin No.
42 41
Start / Stop FG pulse select Frequency generator output Phase Compensation Rever...
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