Intel SDS2 User Manual

Page 27

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Intel® Server Board SDS2

I/O Subsystem

Revision 1.2

Order Number: A85874-002

13

Table 4. P64-B Configuration IDs

IDSEL Value

Device

24

PCI Slot 1

25

PCI Slot 2

Table 5. P64-C Configuration IDs

IDSEL Value

Device

20

Adaptec AIC-7899W SCSI Controller

24

PCI Slot 5

25

PCI Slot 6

4.1.2.2

P64-B Arbitration

P64-B supports three PCI masters (PCI masters from slots 1 and 2, and CIOB).

All PCI

masters must arbitrate for PCI access, using resources supplied by the CIOB.

The following

table defines the arbitration connections.

Table 7. P64-B Arbitration Connections

Baseboard Signals

Device

FREQL1 / FGNTL1

PCI Slot 1

FREQL2 / FGNTL2

PCI Slot 2

4.1.2.3

P64-C Arbitration

P64-C supports four PCI masters (PCI masters from slots 5 and 6, onboard SCSI, and CIOB).
All PCI masters must arbitrate for PCI access, using resources supplied by the CIOB. The
following table defines the arbitration connections.

Table 8. P64-B Arbitration Connections

Baseboard Signals

Device

SCSIREQL0 / SCSIGNTL0

Adaptec AIC-7899W SCSI Controller

P64REQL1 / P64GNTL1

PCI Slot 5

P64REQL2 / P64GNTL2

PCI Slot 6

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