Motorola MC68020 User Manual

MOTOROLA M68020 USER’S MANUAL 3- 1
SECTION 3
SIGNAL DESCRIPTION
This section contains brief descriptions of the input and output signals in their functional
groups, as shown in Figure 3-1. Each signal is explained in a brief paragraph with
reference to other sections that contain more detail about the signal and the related
operations.
NOTE
In this section and in the remainder of the manual,
assert and
negate are used to specify forcing a signal to a particular state.
In particular,
assertion and assert refer to a signal that is active
or true;
negation and negate indicate a signal that is inactive or
false. These terms are used independently of the voltage level
(high or low) that they represent.
F
C2–FC
0
A
31–A
0
D
31–D
0
FUNCTION CODE
S
ADDRESS BU
S
D
ATA BU
S
T
RANSFER SIZ
E
ASYNCHRONOU
S
BUS CONTRO
L
EMULATOR SUPPOR
T
B
US A
RB
C
ONT
RO
I
NTER
RU
C
ONT
RO
B
US E
XC
C
ONT
RO
MC68020
S
IZ
0
S
IZ
1
O
C
S
E
C
S
R
/W
R
M
C
AS
DS
D
BE
N
D
SACK
0
D
SACK
1
C
DI
S
G
N
D
V
C
L
K
B
ER
R
H
AL
T
R
ESE
T
B
GAC
K
BG
BR
A
VE
C
I
PEN
D
I
PL
2
I
PL
1
I
PL
0
CC
*
*
*
**
*
*
Figure 3-1. Functional Signal Groups

Motorola MC68020 Specifications

General

Brand	Motorola
Model	MC68020
Category	Computer Hardware
Language	English