Dell POWEREDGE R710 User Manual
Page 30
Dell™ PowerEdge™ R710 Technical Guidebook
30
Intel Direct Media Interface (DMI)
The DMI (previously called the Enterprise Southbridge Interface) connects the Tylersburg IOH with the
Intel I/O Controller Hub (ICH). The DMI is equivalent to a x4 PCIe Gen1 link with a transfer rate of 1 Gb/s
in each direction.
PCI Express Generation 2
PCI Express is a serial point-to-point interconnect for I/O devices. PCIe Gen2 doubles the signaling bit
rate of each lane from 2.5 Gb/s to 5 Gb/s. Each of the PCIe Gen2 ports are backwards-compatible with
Gen1 transfer rates.
In the Tylersburg-36D IOH, there are two x2 PCIe Gen2 ports (1Gb/s) and eight x4 PCIe Gen2 ports (2
Gb/s). The x2 ports can be combined as a x4 link; however, this x4 link cannot be combined with any of
the other x4 ports. Two neighboring x4 ports can be combined as a x8 link, and both resulting x8 links
can combine to form a x16 link.
Intel I/O Controller Hub 9 (ICH9)
ICH9 is a highly integrated I/O controller, supporting the following functions:
• Six x1 PCIe Gen1 ports, with the capability of combining ports 1-4 as a x4 link
• These ports are unused on the PowerEdge R710
• PCI Bus 32-bit Interface Rev 2.3 running at 33MHz
• Up to six Serial ATA (SATA) ports with transfer rates up to 300 MB/s
• The PowerEdge R710 features two SATA port for optional internal optical drive or tape backup
• Six UHCI and two EHCI (High-Speed 2.0) USB host controllers, with up to twelve USB ports
• The PowerEdge R710 has eight external USB ports and two internal ports dedicated for UIPS.
Refer to the 11th generation of PowerEdge servers Hardware/BIOS Specification for the USB
assignments for each platform
• Power management interface (ACPI 3.0b compliant)
• Platform Environmental Control Interface (PECI)
• Intel Dynamic Power Mode Manager
• I/O interrupt controller
• SMBus 2.0 controller
• Low Pin Count (LPC) interface to Super I/O, Trusted Platform Module (TPM), and SuperVU
• Serial Peripheral Interface (SPI) support for up to two devices
• The PowerEdge R710’s BIOS is connected to the ICH using SPI