– 32 –
IC301
BA6287F
1
2
3
4
OUT1
VM
VCC
FIN
8
7
6
5
GND
OUT2
VREF
RIN
CONTROL LOGIC
TSD
POWER
SAVE
DRIVER
DRIVER
DIGITAL FILTER CIRCUIT
ATTENUATOR OPERATIONAL CIRCUIT
DEEMPHASIS FILTER CIRCUIT
D-
∆
MODULATION CIRCUIT
INTERFACE
CIRCUIT
TEST
CIRCUIT
OUTPUT
CIRCUIT
ANALOG
FILTER
TIMING
GENERATOR
OSC
MICROCOMPUTER
INTERFACE
CIRCUIT
OUTPUT
CIRCUIT
ANALOG
FILTER
1
2
3 4
5
6
7
8
9
10
20
19
18
17
16
15
14 13
12
11
21
22
23
24
LRCK
BCK
DATA
HS
(SM)
ATT
(EMP)
SH
(BS)
LA
VDX
XO
XI
GNDX
MCK
VDD
T1
P/S
VDA
RO
GNDA
VR
GNDA
LO
GNDD
ZD
VDA
IC401
TC9404FN-EL
IC303
NM24C16EM8X
SLAVE ADDRESS
REGISTER &
COMPARATOR
6
7
8
5
1
2
3
CONTROL
LOGIC
WORD
ADDRESS
COUNTER
X
DECODER
EEPROM
128 x 16 x 8
H.V. GENERATOR
TIMING & CONTROL
START CYCLE
START/
STOP
LOGIC
A0
A1
A2
Y
DECODER
DATA
REGISTER
D OUT
SDA
CK
4
16
LOAD
INC
SCL
NC
VCC
16
8
8
DEVICE
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2
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