JVC XM-P55 Service Manual page 5

CXA8069M(IC450):Sensorless Motor Driver
1.Pin Layout
2.Block Diagram
VS
WF
VF
UF
COMF
CPOUT
CPC2
CP2
CPC1
CP1
VCO
RMAX
RMIN
VCOIN
VCC
48 37
13 24
Voltage Driver
+ - + - + -
Charge
Pump
VCO
1/8
Power Stage
Level Shifter
Sensorless
Logic
Full Wave
Rectifier
PWM
PGND
RF
CF
GND
FC
FG2
FG
RESET
CLOCK
SLOPE
OSC
+ -
XM-P55
XM-PJ1
2-3