CS82C59AZ View Datasheet(PDF) - Intersil
Part Name
Description
MFG CO.
'CS82C59AZ' PDF : 22 Pages View PDF
82C59A
OCW1
A0
D7
D6
D5
1
M7
M6
M5
D4
D3
M4
M3
D2
D1
D0
M2
M1
M0
OCW2
Interrupt Mask
1 = Mask set
0 = Mask reset
A0
D7
D6
D5
D4
D3
D2
D1
D0
0
R
SL
EOI
0
0
L2
L1
L0
0 01
0 11
1 01
1 00
0 00
1 11
1 10
0 10
OCW3
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
End of interrupt
Automatic rotation
Specific rotation
† L0 - L2 are used
IR LEVEL TO BE
ACTED UPON
0 123 4 567
0 101 0 101
0 011 0 011
0 000 1 111
A0
D7
D6
D5
D4
D3
D2
D1
D0
0
0
ESMM SMM
0
1
P
RR
RIS
READ REGISTER COMMAND
01
0
1
00
1
1
Read IR reg on Read IS reg on
No Action next RD pulse next RD pulse
1 = Poll command
0 = No poll command
SPECIAL MASK MODE
01
0
1
00
1
1
Reset special Set special
No Action mask
mask
FIGURE 8. 82C59A OPERATION COMMAND WORD FORMAT
12
FN2784.5
March 17, 2006
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