— 12 —
IC631 LB1641
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
1
INIT
2
3
4
5
6
7
8
9
10
11
12
13
14
D Vdd 2
SYSM
L1 (+)
ATT
A Vdd L
SHIFT
L2 (+)
LATCH
A Vss L
256FSO
X Vss
TEST1
512IN
D Vss
X OUT
MCKSEL
X Vdd
XBCK
A Vss R
DATA
R2 (+)
LRCK
A Vdd R
MUTE L
R1 (+)
MUTE R
D Vdd 1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
MODE
S/P
ATT
IIR
FIR3
FIR2
FIR1
PLM
PLM
MUTE
CIRCUIT
CLOCK
GENERATOR
AC
DITHER
DC
DITHER
3RD ORDER
NOISE SHAPER
SAMPLE
HOLD (X1)
TIMING CIRCUIT
IC661 CXD8567AM