Texas Instruments 99/4A - Page 113

I/O PORT CONNECTOR
COMPONENT
SIDE
44 TOP
43 BOTTOM
£ TOP
1 BOTTOM
TOP BOTTOM
2 SBE
1
+5 V
4
-EXT INT
3 RESET
6 A10
5 A5
8 All
7
A4
10
A3
9 DBIN *
12
READY
11
A12
14
A8
13
-LOAD
16
Al 4
15
A13
18
A9
17
A7
20
A2
19
A15
22
-CRU CLOCK
21
GROUND
24
-03 SYSTEM CLOCK
23
26
-WE
25
28
-MBE
27
GROUND
30 Al
29
A6
32
-MEMEN
31
AO
34
D7
33
CRU IN
36
06
35
D4
38
D5
37
DO
40 DI
39
D2
42
D3
41
HOLD / IAQ
44
SOUND IN
43
-5 V
SBE - SPEECH BLOCK ENABLE
MBE - MEMORY BLOCK ENABLE
EXT INT - EXTERNAL INTERUPT
MEMEN - MEMORY ENABLE
DBIN - DATA BUS IN
IAQ - INSTRUCTION AQUISITION
104