LSISAS1068 LSI, LSISAS1068 Datasheet - Page 94

• Manufacturer Part Number: LSISAS1068
• Manufacturer: LSI

Specifications of LSISAS1068

• Lead Free Status / RoHS Status: Not Compliant

4-24
Register: 0xXX
MSI-X Capability ID
Read Only
Register: 0xXX
MSI-X Next Pointer
Read Only
Register: 0xXX
MSI-X Message Control
Read/Write
PCI Host Register Description
Copyright © 2004, 2005 by LSI Logic Corporation. All rights reserved.
15
0
7
0
7
x
0
0
0
x
MSI-X Capability ID
This register indicates the type of the current data
structure. This register always returns 0x11, indicating
MSI-X.
MSI-X Next Pointer
This register points to the next item in the extended capa-
bilities list. The value of this register varies according to
system configuration.
0
MSI-X Enable
Setting this bit enables the device to use MSI-X to
request service from the host. To enable MSI-X, the MSI
Enable bit in the
cleared (‘0’). Setting this bit also prohibits the device from
using the INTA/ or ALT_INTA/ pins to request service
from the host. Setting this bit to mask interrupts on the
INTA/ or ALT_INTA/ pins is a violation of the PCI specifi-
cation.
0
0
x
x
MSI-X Message Control
MSI-X Capability ID
MSI-X Next Pointer
x
1
x
MSI Message Control
8
x
7
x
0
x
x
x
0
x
x
register must be
x
0
x
x
x
0
1
0
x
[7:0]
[7:0]
0
x
15