EP80579 Datasheet, PDF (308/1916 Pages) Intel Corporation – Intel® EP80579 Integrated Processor Product Line

Intel^® EP80579 Integrated Processor
Figure 12-1. Concept Diagram of EDMA Data Path
EP80579
EDMA Engine
CMACH0
CMACH1
CMACH2
CMACH3
Transaction
Requests
PCI Express
Interface
Port A
Memory-to-Memory
EDMA Data Path
Memory
Memory-to-I/O
EDMA Data Path
PCI Express Port A
Links
B6119-01
12.1.1
Features
The following features are supported by the EDMA controller:
• Four independent channels (see Figure 12-2)
— Dedicated data transfer queue per channel
— Full register set for descriptor and transfer handling per channel
• Support for transfer between main memory locations, and from memory to the I/O
subsystem
• PCI Express* support of traffic class to provide external prioritization of traffic
• Supports transfers only between two physical addresses
— 32-bit (4 GB) addressing range on the local system memory interface
Intel^® EP80579 Integrated Processor Product Line Datasheet
308
August 2009
Order Number: 320066-003US