Dell PowerEdge T610 - Manual (Page 36)

Dell
PowerEdge T610 Technical Guide 36
9 BIOS
9.1 Overview
The PowerEdge T610 BIOS is based on the Dell BIOS core and supports the following features:

Simultaneous Multi-Threading (SMT) support

Processor Turbo Mode support

PCI 2.3 compliant

Plug and Play 1.0a compliant

MP (Multiprocessor) 1.4 compliant

Ability to boot from hard drive, optical drive, iSCSI drive, USB key, and SD card

ACPI support

Direct Media Interface (DMI) support

PXE and WOL support for on-board NICs

Memory mirroring support

SETUP access through <F2> key at end of POST

USB 2.0 (USB boot code is 1.1 compliant)

F1/F2 error logging in CMOS

Virtual KVM, CD, and floppy support

Unified Extensible Firmware Interface (UEFI) 2.1 support

Power management support including DBS, Power Inventory and multiple power profiles

Intel TXT (5600 processor series)

Intel AESNI (5600 processor series)
The T610 BIOS does not support the following:

BIOS language localization

BIOS recovery after bad flash (can be recovered from iDRAC6 Express)
9.2 Supported ACPI States
Advanced Configuration and Power Interface (ACPI) is a standard interface for enabling the operating
system to direct configuration and power management.
The Intel Xeon processor 5500 and 5600 series supports the following C-States: C0, C1, C1E, C3, and
C6. The T610 supports all of the available C-States.
9.3 I 2 C (Inter-Integrated Circuit)
I 2 C is a simple bi-directional two-wire bus for efficient inter-integrated circuit control. All I 2 C-bus
compatible devices incorporate an on-chip interface which allows them to communicate directly with
each other via the I
2 C bus. This design concept solves the many interfacing problems encountered
when designing digital control circuits. These I 2 C devices perform communication functions between
intelligent control devices (e.g., microcontrollers), general-purpose circuits (e.g., LCD drivers,
remote I/O ports, memories) and application-oriented circuits.
The PowerEdge T610 BIOS accesses the I
2 C through the ICH9 (Intel I/O Controller Hub 9). There are
two multiplexers (MUX) on the ICH9 I 2 C bus.

One MUX (U_ICH_SPD) controls the DIMM SPDs through four split segments

The other MUX (U_ICH_MAIN) controls the clock buffers, TOE, and USB Hub through four split
segments.
BIOS controls both the MUXes through the two select lines using GPIO pins.
The clock chip, USB hub, and the front panel EEPROM device addresses are located on the IOH I
2 C
bus.