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47
IC400 LA5643 (MAIN BOARD)
12
1110
13
1
23
4
8
76
5
9
-
+
-
+
DELAY
RESET CIRCUIT
-
+
-
+
-
+
VREF1
VREF3
VREF2
DELAY
-
+
1
2 3
4
5 6 7 8 9
10
GND
MOTOR
DRIVE
NOISE
FILTER
CLAMP
FWD.IN
REV.IN
VCC 1
VCC 2
NOISE
FILTER
MOTOR
DRIVE
MOTOR
DRIVE
MOTOR
DRIVE
T.S.D O.C.P
FWD/REV/STOP
CONTROL LOGIC
2
5
5k
+
–
27k
OVERCURRENT
LIMITTER
OVERHEAT
PROTECTION
REFERENCE
VOLTAGE
GND
ON/OFF
IN
REFERENCE
VOLTAGE
OUT
3
4
1
VCOM
AINR
AINL
2
1
3
VREF
4
TEST
7
XTAI
9
XTALE
10
XTAO
8
SDTI
14
LRCK
11
BICK
12
SDTO
13
AGND
5
VA
6
A/D
CONVERTER
BLOCK
D/A
CONVERTER
BLOCK
CLOCK
GENERATOR
& DIVIDER
AUDIO
INTERFACE
CONTROLLER
CDTI
15
CIF
18
CLKO
21
AOUTL+
26
AOUTL–
25
DGND
24
VD
23
VT
22
AOUTR+
28
AOUTR–
27
PD
19
M/S
20
CS
17
CCLK
16
CONTROL
REGISTER
INTERFACE
H.P.F.
D-ATT
D-ATT,
S-MUTE
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