Sony RM-B150 Maintenance Manual page 41

PORT 7
38
P6 /A
0 16
39
P6 /A
1 17 WATCHDOG
40
P6 /A TIMER
2 18
41
P6 /A
3 19
16-BIT FREE
RUNNING TIMER
(x 3 CHANNEL)
30
P5 /A
0 8
31
P5 /A
1 9
8-BIT
32
P5 /A
2 10
TIMER
33
P5 /A
3 11
34
P5 /A
4 12
35
P5 /A
5 13
36
P5 /A
6 14
37
P5 /A
7 15
21
P4 /A
0 0
22
P4 /A
1 1
23
P4 /A
2 2
24
P4 /A
3 3
25
P4 /A
4 4 PROM/MASK OM
26
P4 /A
5 5 32k BYTE
27
P4 /A
6 6
28
P4 /A
7 7
PORT 3
RM-B150
PORT 8 PORT 9
10-BIT
A/D CONVERTER
PWM TIMER
(x 3 CHANNEL)
SERIAL
COMMUNICATION
INTERFACE
DATA
TRANSFER
CONTROLLER
CPU
INTERRUPT
CONTROLLER
WAIT
RAM
STATE
1k BYTE
CONTROLLER
CLOCK
OSC
PORT 2 PORT 1
SN74HC04APW-E05
SN74HC04APW-E20 (TI)FLAT PACKAGE
C-MOS HEX INVERTERS
—TOP VIEW—
14 13 12 11 10 9
V
DD
1 2 3 4 5 6
SN74HC08APW-E05 (TI)FLAT PACKAGE
C-MOS QUAD 2-INPUT AND GATES
—TOP VIEW—
14 13 12 11 10 9
V
DD
11
NMI
1 2 3 4 5 6
8
MD
2
7
MD
1
6
MD
0
9
STBY
10
RES
SN74HC138APW-E05 (TI)FLAT PACKAGE
C-MOS 3-TO-8 LINE DECODER/DEMULTIPLEXER
70
XTAL
—TOP VIEW—
69
EXTAL
A 1 V 16
IN DD
B 2 15
IN
C IN 3 14
EN1
4 13
IN
EN2
5 12
IN
EN3 IN 6 11
Y7
OUT 7 10
8 GND 9
SN75158PS (TI)
SN75158PS-E05
DUAL DIFFERENTIAL LINE DRIVE
—TOP VIEW—
1Z 1 V 8
CC
1Y 2 7 2Z
1A 3 6 2Y
4 GND 5 2A
8
A Y = A Y
A
Y =
A Y
0 1
1 0
GND
0 : LOW LEVEL
7
1 : HIGH LEVEL
8
A
A
Y = Y
B
B
A B
Y = A • B = +
A B Y
GND
0 0 0
7
0 1 0
1 0 0
0 : LOW LEVEL
1 1 1
1 : HIGH LEVEL
1 15
A Y0
2 14
B Y1
3 13
C Y2
Y0
OUT
12
Y3
11
Y4
4
Y1
OUT
EN1 10
Y5
5
9
EN2
EN
Y6
Y2
OUT
7
6
EN3 Y7
Y3
OUT
INPUTS OUTPUTS
Y4
EN C B A Y7 Y6 Y5 Y4 Y3
OUT
0 x x x 1 1 1 1 1
Y5
1 0 0 0 1 1 1 1 1
OUT
1 0 0 1 1 1 1 1 1
Y6
1 0 1 0 1 1 1 1 1
OUT
1 0 1 1 1 1 1 1 0
1 1 0 0 1 1 1 0 1
1 1 0 1 1 1 0 1 1
1 1 1 0 1 0 1 1 1
1 1 1 1 0 1 1 1 1
EN1 EN2
EN = • • EN3 0 : LOW LEVEL
1 : HIGH LEVEL
x : DON'T CARE
IC
Y2 Y1 Y0
1 1 1
1 1 0
1 0 1
0 1 1
1 1 1
1 1 1
1 1 1
1 1 1
1 1 1
5-7