38
HCD-GP6V
IC504
BU9262AFS
– CONTROL Board –
1
2
3
4
5
6
7
8
9
CONTROL LOGIC
TSD
VREF
OUT2
OUT1
RNF
VM
VCC
FIN
GND
RIN
IC604
BA6956AN
1
N. C.
2
TESTB
3
SCK
4
SLT
5
SI
6
CLKO
7
CLKI
8
N. C.
9
DSOUT
10
TESTOUT
11
LPF1I1
12
LPF1I2
13
LPF1O
14
ADI
15
ADO
16
GND
32 MIXIN
31 MICIN
30 VDD
29 LCIN
28 RCIN
27 FBOUT
26 LCOUT
25 RCOUT
24 VREF
23 DSIG
22 VOIN
21 LPF2O
20 LPF2I2
19 LPF2I1
18 DAO
17 DAI
SERIAL
CONTROL
CIRCUIOT
CLOCK
A/D
CONVERETR
LOW-PASS
FILTER
INPUT
MIX
SELECTOR
DLYVOL
MIX OUT
REFERENCE
RESET
FBVOL
LOW-PASS
FILTER
D/A
CONVERETR
PROCESSOR
RAM
TEST OUT
CONTROL
LOGIC INPUT
– MIC/ECHO Board –
IC201
STK403-040
PRE DRIVER
IC CH1
1
2
3
4
5
6
7
8
9
10
11
12
PRE DRIVER
IC CH2
BIAS CIRCUIT
–VCC (–VP)
+VCC (+VP)
CH1 OUT
CH2 OUT
+PRE
SUB
GND
CH1 IN
CH1 NF
ST BY
CH2 NF
CH2 IN
C4
C2
C1
C3
TR4
TR6
TR3
TR2
TR5
TR1
R5
R6
R1
R2
R3
R4
R7
R8
SUB