Sony CA-550, Maintenance Manual, Page: 80 / 114

5-6
IC
CA-550
CA-550P
PCF8574T (PHILIPS) PC410 (SHARP) FLAT PACKAGE
∗∗∗∗∗∗∗∗∗∗
C-MOS REMOTE 8-BIT I/O EXPANDER
— TOP VIEW —
IL22
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A0
IN
A1
IN
A2
IN
P0
I/O
P1
I/O
P2
I/O
P3
I/O
SDA
SCL
INT
P7
I/O
P6
I/O
P5
I/O
P4
I/O
13
4
5
6
7
9
10
11
12
15
INT
P0
P1
P2
P3
P4
P5
P6
P7
SDA
A0
A1
A2
SCL
1
2
3
14
INPUT
A0 - A2
SCL
OUTPUT
INT
SDA
INPUT/OUTPUT
P0 - P7
; ADDRESS INPUT
; SYSTEM CLOCK LINE
; INTERRUPT OUTPUT
; SERIAL DATA LINE
; 8-BITS QUASI-BIDIRECTIONAL I/O PORT
GND
V
DD
INTERRUPT
LOGIC
INPUT
FILTER
POWER-ON
RESET
LP FILTER
SHIFT
REGISTER
I/O
PORTS
8 BIT
INT
27
A0
1
A1
2
A2
3
SCL
14
SDA
15
V DD
16
V
SS
8
PCF8574
PCF8574A
P0
4
P1
5
P2
6
P3
7
P4
9
P5
10
P6
11
P7
12
write pulse
read pulse
I 2 C BUS
CONTROL
TA8129Z (TOSHIBA)
OPIC-OUTPUT PHOTO COUPLER
—TOP VIEW—
1 3
4 5 6
TA75S393F (TOSHIBA)
SINGLE COMPARATOR
— TOP VIEW —
V
CC
1 3
OUT
2
5 4
IN (+) IN (–)
V
EE
–
+
V
CC
; +1 V to +18 V or +2 V to +36 V
V
EE
; –1 V to –18 V
SN75158PS (TI)
DUAL DIFFERENTIAL LINE DRIVE
— TOP VIEW —
1Z
1Y
1A
1
2
3
4
8
7
6
5
2Z
2Y
2A GND
V
CC
(+5 V)
TC4S01F (TOSHIBA) CHIP PACKAGE
FM IF SYSTEM (DIFFERENTIAL PEAK DETECT)
— SIDE VIEW —
1
GND
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
GND
V
CC
(+16 V)
BYPASS
IF
IN
BIAS
SDS
METER
SD
OUT
F
AF
OUT
MUTE
REG
DET 1 DET 2 IF
OUT
IF AMP
BYPASS
1
IF IN
2
BIAS
3
GND (IF)
4
LPF
IF OUT
16
STATION
DET
SDS
5
METER
DRIVE
MUTE
DRIVE
METER OUT
6
SD OUT
7
F
9
AF AMP
AF OUT
10
REG
V
CC
12
MUTE
11
F DET
DET 2 IN
15
REG OUT
13
DET 1 IN
14
PEAK DET
C-MOS 2-INPUT NOR GATE
(SCALE 6/1)
—TOP VIEW—
1
A
A
0
0
1
1
B
0
1
0
1
TYPE
4S01F
7S02F
7S02FU
7SH02FU
V
DD
+3 to +18V
+2 to +6V
Y
1
0
0
0
B
A
B
1
2
2
GND 3
5 V
DD
4
Y =
0 ; LOW LEVEL
1 ; HIGH LEVEL
Y = A + B = A • B
Y
4