GW80314GSSL7NK Datasheet, PDF (12/88 Pages) Intel Corporation – Intel® GW80314 I/O Companion Chip

Intel® GW80314 I/O Companion Chip
Features
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2.1
2.2
Features
The Intel^® GW80314 I/O Processor (GW80314) is an I/O companion chip for the Intel^® 80200
processor (80200) with an intelligent PCI-X bridge and Gigabit Ethernet access.
Switch Fabric Unit
The purpose of the Switch Fabric Network (SFN) is to provide an interconnect fabric that is useful
for on-chip communications between the blocks within the GW80314.
The Switch Fabric Unit includes the following features:
• High-performance interconnect fabric for communication between GW80314 blocks
• Consistent port definition that is independent of the fabric implementation
• Protocol independent of fabric pipeline depth
• Three transaction flows using four priority levels
• 64-bit local address
• Four or six deep 256-byte transaction queues (1 K for PCI-X and SDRAM) (mode dependent)
• Port addressing supports up to 16 SFN ports
PCI-X Interface
The PCI/X block provides an interface to the SFN (internal switch fabric). It is able to convey
transactions from the internal SFN fabric to a PCI/X bus and transactions from a PCI/X bus to the
internal switch fabric. The PCI/X block also has the capability to tunnel through the SFN fabric to
the other PCI/X block on the fabric providing a pseudo-transparent PCI-to-PCI bridge. This
capability is available in the GW80314 as two separate PCI/X blocks are integrated.
The PCI-X block provides the following functions:
• 64-bit capable PCI/X interface
• Secondary PCI arbiter
• CompactPCI Hot Swap controller
• Control and status registers
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Datasheet