Intel Server Board S3000AH - Viglen Download

Functional Architecture
Intel® Server Board S3000AH TPS
Table 6. Segment E Configuration IDs
IDSEL Value
Device
18 PCI-X* Slot 5 (64bit/66-133MHz) (S3000AHLX SKU only)
17 Super Slot 6 (64bit/66-100MHz) (Riser, S3000AHLX SKU only)
3.2.2.1.2 Segment E Arbitration
PXH-V supports two PCI masters: two PCI-X* slots or one riser slot. All PCI masters must
arbitrate for PCI access using resources supplied by the PXH-V. The host bridge PCI interface
(PXH-V) arbitration lines REQx* and GNTx* are a special case in that they are internal to the
host bridge. The following table defines the arbitration connections.
Table 7. Segment D Arbitration Connections
Baseboard Signals
Device
PCIX REQ_N1/GNT_N1 PCI-X Slot 5 (64bit/66-133MHz) (S3000AHLX SKU only)
PCIX REQ_N0/GNT_N0 Super Slot 6 (64bit/66-100MHz) (Riser, S3000AHLX SKU only)
3.2.3 I/O Controller Hub
3.2.3.1 Intel ® ICH7R: I/O Controller Hub 7R
The Intel ® ICH7R controller has several components. It provides the interface for a 32-bit/33-
MHz PCI bus. The Intel ® ICH7R can be both a master and a target on that PCI bus. The Intel ®
ICH7R includes a USB 2.0 controller and an IDE controller. The Intel ® ICH7R is responsible for
much of the power management functions with ACPI control registers built in. The Intel ® ICH7R
also provides a number of General Purpose I/O (GPIO) pins and has the Low Pin Count (LPC)
bus to support low speed Legacy I/O.
The MCH and Intel ® ICH7R chips provide the pathway between the processor and the I/O
systems. The MCH is responsible for accepting access requests from the host (processor) bus,
and directing all I/O accesses to one of the PCI buses or Legacy I/O locations. If the cycle is
directed to one of the PCIe* segments, the MCH communicates with the PCIe Devices (add-in
card, on board devices) through the PCIe interface. If the cycle is directed to the Intel ® ICH7R,
the cycle is output on the MCH’s DMI bus. All I/O for the board, including PCI and PCcompatible
I/O, is directed through the MCH and then through the Intel ® ICH7R provided PCI
buses.
The Intel ® ICH7R is a multi-function device, housed in a 609-pin mBGA device. It provides the
following:
• A DMI bus
• A PCI 32-bit/33 MHz interface
• An IDE interface
• An integrated Serial ATA Host controller
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