Intel
®
Server Board S5500BC TPS Functional Architecture
Revision 1.8 Intel order number: E42249-009 35
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
®
-routing logic determines whether a USB port is
controlled 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
Manageability Engine Power Management Support for new wake events from the IOH
Management Engine.
The Intel
®
Server Board S5500BC server is fully compliant with the Advanced Configuration and
Power Interface (ACPI) specifications, Revision 2.0.
3.4.9 System Management Interface
Intel
®
ICH10R on the Intel
®
Server board S5500BC functions as a SMBus Host Controller that
allows the processor to communicate with SMBus slaves. This interface is compatible with most
I
2
C devices. Intel
®
ICH10R also supports slave functionality.
3.4.10 Real Time Clock (RTC)
Intel
®
ICH10R contains a Motorola MS146818A* functionally compatible Real Time Clock (RTC)
with two 128-byte banks of battery-backed RAM. The RTC performs two key functions on the
Intel
®
Server Board S5500BC:
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