
RTI-15
Legend for TYPE and ACTIVE fields:
TI = TTL input
TUI = TTL input (pull-up)
TDI = TTL input (pull-down)
TO = TTL output
TTO = Three-state TTL output
TTB = Three-state TTL bidirectional
[ ] - Values in parentheses indicate the initialized state of
output pin.
DATA BUS
NAME
PIN NUMBER
TYPE
ACTIVE
DESCRIPTION
LCC
PGA
DATA I/O 15
53
A11
TTB
--
Bit 15 (MSB) of the bidirectional Data
bus.
DATA I/O 14
55
A10
TTB
--
Bit 14 of the bidirectional Data bus.
DATA I/O 13
57
A9
TTB
--
Bit 13 of the bidirectional Data bus.
DATA I/O 12
59
A8
TTB
--
Bit 12 of the bidirectional Data bus.
DATA I/O 11
61
B6
TTB
--
Bit 11 of the bidirectional Data bus.
DATA I/O 10
63
C7
TTB
--
Bit 10 of the bidirectional Data bus.
DATA I/O 9
65
A6
TTB
--
Bit 9 of the bidirectional Data bus.
DATA I/O 8
66
A5
TTB
--
Bit 8 of the bidirectional Data bus.
DATA I/O 7
67
B5
TTB
--
Bit 7 of the bidirectional Data bus.
DATA I/O 6
68
C5
TTB
--
Bit 6 of the bidirectional Data bus.
DATA I/O 5
69
A4
TTB
--
Bit 5 of the bidirectional Data bus.
DATA I/O 4
70
B4
TTB
--
Bit 4 of the bidirectional Data bus.
DATA I/O 3
71
A3
TTB
--
Bit 3 of the bidirectional Data bus.
DATA I/O 2
72
A2
TTB
--
Bit 2 of the bidirectional Data bus.
DATA I/O 1
73
B3
TTB
--
Bit 1 of the bidirectional Data bus.
DATA I/O 0
74
A1
TTB
--
Bit 0 (LSB) of the bidirectional Data bus.
INPUT ADDRESS BUS
NAME
PIN NUMBER
TYPE
ACTIVE
DESCRIPTION
LCC
PGA
ADDR IN 10
75
B2
TI
--
Bit 10 (MSB) of the Address Input bus.
ADDR IN 9
77
B1
TI
--
Bit 9 of the Address Input bus.
ADDR IN 8
79
D2
TI
--
Bit 8 of the Address Input bus.
ADDR IN 7
81
F2
TI
--
Bit 7 of the Address Input bus.
ADDR IN 6
83
E1
TI
--
Bit 6 of the Address Input bus.
ADDR IN 5
1
F3
TI
--
Bit 5 of the Address Input bus.
ADDR IN 4
3
G1
TI
--
Bit 4 of the Address Input bus.
ADDR IN 3
5
G3
TI
--
Bit 3 of the Address Input bus.
ADDR IN 2
7
H2
TI
--
Bit 2 of the Address Input bus.
ADDR IN 1
9
K1
TI
--
Bit 1 of the Address Input bus.
ADDR IN 0
13
K3
TI
--
Bit 0 (LSB) of the Address Input bus.