Intel S7000FC4UR Technical Product Specification

Main Board Intel® Server System S7000FC4UR TPS
Revision 1.0
Intel order number E18291-001
8
2.2.4.1.1 INTx Emulation
For legacy compatibility, PCI-Express* provides a PCI INTx emulation mechanism to signal
interrupts to the system interrupt controller (Enterprise Southbridge 2). This mechanism is
compatible with existing PCI software.
The mechanism provides the same level and type of service as standard PCI interrupt
mechanisms. However, it uses a different hardware implementation where physical PCI
interrupt signals are virtualized as in-band PCI-Express* messages. This legacy compatibility
allows boot device support without requiring complex BIOS-level interrupt configuration/control
service stacks.
2.2.4.1.2 Message Signaled Interrupt (MSI) Support
In addition to PCI INTx compatible interrupt emulation, PCI-Express* requires support of
Message Signaled Interrupt (MSI) mechanism. The PCI-Express* MSI mechanism is compatible
with the MSI capability defined in the PCI 2.2 Specification.
2.2.4.2 PCI-Express* Expander/Switch
The PCI-Express* Expander/Switch IDT
*
89HPES24N3A works in conjunction with the Intel
®
7300 Chipset. It utilizes a single x8 PCI-Express* upstream bus and expands it into two unique
downstream x8 PCI-Express* buses. Some features of the PCI-Express* Expander used on the
main board are as follows:
 24 PCI Express* lanes (2.5 Gbps), three switch ports
 6 GBps (48 Gbps) aggregate switching throughput
 Low latency cut-through switch architecture
 Supports 128 to 2048 byte maximum payload size
 One virtual channel
 Fully compliant with PCI Express Base Specification Revision 1.0a
 ACPI power management logic support
 Port arbitration schemes utilizing round robin or weighted round robin algorithms
 One port configurable as downstream port or non-transparent port
 Automatic per port link width negotiation to a x8, x4, x2 or x1
 Static lane reversal on all ports
 Polarity inversion
 Ability to load device configuration from serial EEPROM
 Internal end-to-end parity protection on all TLPs ensures data integrity even in systems
that do not implement end-to-end CRC (ECRC)
 ECRC passed through in transparent and non-transparent modes
 Supports PCI Express* native hot-plug
 Compatible with hot-plug I/O expanders used on PC motherboards
 Hot-swap capable I/O

Intel S7000FC4UR Specifications

General

Brand	Intel
Model	S7000FC4UR
Category	Server
Language	English