Bose FreeSpace 4400 Service Manual page 97

Integrated Circuit Diagrams
A
0 1
A 2
1
A 3
2
A 4
3
CS
5
I/O 6
0
7
I/O
1
V 8
DD
GND 9
I/O
10
2
I/O 11
3
WE
12
A 13
4
A 14
5
A
15
6
A
16
7
Top View
A
0
•
•
ADDRESS
•
DECODER
A
16
8
I/O - I/O
0 7
8
WE
CONTROL
OE
LOGIC
CS
CS OE WE
L L H DATA
L X L DATA
L H H High-Z
H X X High-Z
NOTE:
1. H = V , L = V , X = Don't care.
I H IL
IDT71V124SA12Y, 1 MB RAM
Pinout Diagram
LM34DZ
LM34, Temp Sensor
A
16
32
31 A
15
30 A
14
29 A
13
OE
28
27 I/O
7
I/O
26
6
25 GND
V
24
DD
23 I/O
5
I/O
22
4
21 A
12
20 A
11
19 A
10
18 A
9
17 A
8
•
•
1,048,576-BIT
MEMORY ARRAY
•
8
I/O CONTROL
I/O Function
Read Data
OUT
Write Data
IN
Output Disabled
Deselected – Standby
TO-92
PINOUT DIAGRAM
1A
1Y
2A
2Y
3A
3Y
GND
FUNCTION TABLE
(each inverter)
INPUT
A
H
L
LOGIC SYMBOL
1
1A
3
2A
5
3A
9
4A
11
5A
13
6A
LOGIC DIAGRAM (POSITIVE LOGIC)
A
SN74HC14D, Hex Schmitt Trigger Inverter
Pin connections (top view)
Note: The TAB is physically connected to the Output.
LD1086D2T33, Regulator
97
(TOP VIEW)
V
1 14
CC
6A
2 13
6Y
3 12
5A
4 11
5Y
5 10
4A
6 9
4Y
7 8
OUTPUT
Y
L
H
10
12
Y
2
D PAK
2
1Y
4
2Y
6
3Y
8
4Y
5Y
6Y