S5920Q Applied Micro Circuits Corporation, S5920Q Datasheet - Page 75

S5920Q

Manufacturer Part Number
S5920Q
Description
Manufacturer
Applied Micro Circuits Corporation
Datasheet

Specifications of S5920Q

Operating Temperature (min)
0C
Operating Temperature Classification
Commercial
Operating Temperature (max)
70C
Package Type
PQFP
Rad Hardened
No
Lead Free Status / Rohs Status
Not Compliant

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S5920 – PCI Product: Operation Registers
PCI INTERRUPT CONTROL/STATUS REG-
ISTER (INTCSR)
Figure 29. Interrupt Control Status Register
AMCC Confidential and Proprietary
Register Name:
PCI Address Offset:
Power-up value:
PCI Attribute:
Size:
Interrupt Asserted (RO)
Add-On Interrupt Pin
(ADDINT#) Status (RO)
Incoming Mailbox
Interrupt (R/WC)
Outgoing Mailbox
Interrupt (R/WC)
Add-On Interrupt Pin
(R/W)
(ADDINT#) Enable
3
1
00000000
Interrupt Control and Status
38h
00000C0Ch
Read/Write, Read/Write Clear
32 bits
2
4
2
3
X
X
2
2
Actual Interrupt
0
2
1
0 0 0 X X 0 0 X X 1 1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
9
This register configures the conditions which will pro-
duce an interrupt on the PCI bus interface, a method
for viewing the cause of the interrupt, and a method for
acknowledging (removing) the interrupt’s assertion.
Interrupt sources:
Interrupt Selection
XX
D8 - D12 PCI Incoming Mailbox
D12 = Enable Interrupt
D9 - D8 = Byte Number
00 = Byte 0
01 = Byte 1
10 = Byte 2
11 = Byte 3
8
75
The Outgoing mailbox becomes empty.
The Incoming mailbox becomes full.
Add-On interrupt pin enable and flag.
000
432
X 1 1
1
Revision 1.02 – April 12, 2007
XX
0
Interrupt Source (R/W)
Enable & Selection
D4 - D0 PCI Outgoing Mailbox
(Becomes Empty)
D4 = Enable Interrupt
D1 - D0 = Byte Number
00 = Byte 0
01 = Byte 1
10 = Byte 2
11 = Byte 3
Data Book
DS1596
75

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