Intel
®
Server Board S5500BC TPS
Functional Architecture
Revision 1.0
Intel order number: E42249-003
33
AXXRAKSW5 accessory to enable RAID 5, see the documentation included with the accessory
kit.
3.4.4
Low Pin Count Interface (LPC)
The Intel
®
ICH10R implements an LPC Interface. The Low Pin Count (LPC) bridge function of
the Intel
®
ICH10R resides in PCI Device 31: Function 0. In addition to the LPC bridge interface
function, D31:F0 contains other functional units including DMA, interrupt controllers, timers,
power management, system management, GPIO, and RTC.
The LPC bus supports the Integrated BMC, which contains Server Class Super I/O functionality
in an integrated subsystem on the Intel
®
Server Board S5500BC.
3.4.5
Serial Bus (USB) Controller
The Intel
®
ICH10R contains up to two Enhance Host Controller Interface (EHCI) host controllers
that support USB high-speed signaling. High-speed USB2.0 allows data transfers up to
480 Mb/s, which is 40 times faster than full-speed USB. The Intel
®
ICH10R also contains up to
six Universal Host Controller Interface (UHCI) controllers that support USB full-speed and low-
speed signaling.
The Intel
®
ICH10R supports up to 12 USB 2.0 ports. All 12 ports are high-speed, full-speed, and
low-speed capable. Intel
®
ICH10R’s port-routing logic determines whether a USB port is
controller by one of the UHCI or EHCI controllers. Ten ports are used on the Intel
®
server board
S5500BC as outlined:
Four ports are connected to dual USB + RJ-45 stacked external connectors on the rear
panel.
Four ports are connected to internal headers.
Two ports are connected to the Integrated BMC for remote storage and remote KB/MS
function.
3.4.6
Serial Peripheral Interface (SPI)
The Intel
®
ICH10R implements an SPI Interface as an alternative interface for the BIOS flash
device. You can use an SPI flash device as a replacement for the FWH, which is required to
support Gigabit Ethernet. The Intel
®
ICH10R supports up to two SPI flash devices with speeds
up to 33 MHz using two chip select pins.
3.4.7
General Purpose Input/Output (GPIO)
Various general purpose inputs and outputs are provided for custom system design. The
number of inputs and outputs varies depending on Intel
®
ICH10R configuration.
3.4.8
Enhanced Power Management
The Intel
®
ICH10R supports the Advanced Configuration and Power Interface, Version 2.0
(ACPI) that provides power and thermal management. The Intel
®
ICH10R also supports the
