NAD M56, Service Manual

Page: 95 / 101

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2. LIC201 (R2A30232SP) : SPINDLE MOTOR AND 6CH ACTUATOR DRIVER
2-1. Block Diagram
For SPINDLE
7-13.2V
VM1
COMMON
U
V
W
FO+
FO-
TR+
TR-
TL+
TL-
LO+
LO-
GND
VM3
GND
For /FO/TR/TILT
4.5~5.5V
For LOADING
7~13.2V
H Bridge
4.5~5.5V
5VCC
TRIN
TLIN
SPLIM
FOIN
OUTPUT Ron
1ohm
OUTPUT Ron
1.5ohm
DSP
OUTPUT Ron
1.5ohm
DSP
OUTPUT Ron
1.5ohm
OUTPUT Ron
1.8ohm
OUTPUT Ron
1.5ohm
DSP
DSP
GND
+
-
+
+
CTL
CTL
TSD
CLK Commutation
BACK EMF
EDTECTER
SWICHING
Commutation
STARTER
PWM
CIRCUIT
6.4MHz
STTH
For SLIDE
7~13.2V
FG(x3)
Reverse datact
-
-
+
CTL
TEST mode
Gain Select(SPM)
Current gain
0.88A/V
Current gain
3A/V
0.6A/V
Frequency
75kHz
Current gain
0.88A/V
PWM
CIRCUIT
PWM
CIRCUIT
Cuurrent
sense
Cuurrent
sense
Cuurrent
sense
Frequency
75kHz
Frequency
150kHz
TEST
SPGS EN 1 EN 2
ENABLE
DSP
DSP
DSP
ACTFLG
ACTRST
SLLIM
SL1-
SL1+
GND
SL1IN
SL2IN
VM2
SLIDE1
V/V converter
SPM
V/V converter
SLIDE2
V/V converter
SPIN
REF
FG
SL2-
SL2+
DSP
DSP
OUTPUT Ron
1.8ohm
DSP
STM
DSP
DSP
DSP
Pickup Protect
-
M
M
Voltage gain
x12
Voltage gain
x12
Voltage gain
x12