MD82C59A/B Intersil, MD82C59A/B Datasheet - Page 12

• Manufacturer Part Number: MD82C59A/B
• Description: Interrupt Controller 5V 28-Pin CDIP
• Manufacturer: Intersil

Specifications of MD82C59A/B

• Package: 28CDIP
• Interrupt Mask Option: Yes
• Interrupt Out Delay: 300(Max) ns
• Operating Supply Voltage: 5 V

OCW1
OCW2
OCW3
0
0
1
1
0
1
1
0
A
A
A
1
0
0
0
0
0
0
1
0
0
0
1
1
1
1
1
1
0
0
1
0
0
D
M
D
D
R
†
†
0
†
7
7
7
7
Non-specific EOI command
Specific EOI command
Rotate on non-specific EOI command
Rotate in automatic EOI mode (set)
Rotate in automatic EOI mode (clear)
Rotate on specific EOI command
Set priority command
No operation
ESMM
M
SL
D
D
D
6
6
6
6
12
SMM
EOI
M
D
D
D
FIGURE 8. 82C59A OPERATION COMMAND WORD FORMAT
5
5
5
5
M
D
D
D
0
0
4
4
4
4
M
D
D
D
0
1
3
3
3
3
End of interrupt
Automatic rotation
Specific rotation
82C59A
82C59A
M
D
D
D
L
P
2
2
2
2
2
† L
0
- L
RR
M
2
L
D
D
D
1
1
are used
1
1
1
RIS
M
D
D
L
D
0
0
0
0
0
1 = Poll command
0 = No poll command
No Action
No Action
Interrupt Mask
1 = Mask set
0 = Mask reset
0
0
0
0
0
0
0
0
1
1
0
0
READ REGISTER COMMAND
1
0
1
0
IR LEVEL TO BE
ACTED UPON
SPECIAL MASK MODE
2
0
1
0
Read IR reg on
next RD pulse
Reset special
mask
3
1
1
0
4
0
0
1
0
1
0
1
5
1
0
1
6
0
1
1
Read IS reg on
next RD pulse
Set special
mask
7
1
1
1
1
1
1
1
March 17, 2006
FN2784.5