Chipset - Intel ® Core i7 User Manual

3.7.1.11 Processor Thermals
The processor temperature is communicated to the chipset over the PECI, a single wire
interface. Some important signals are:
1. CATERR#  Indicates that the system has experienced a catastrophic error and
cannot continue to operate.
2. PROCHOT#  PROCHOT# will go active when the Processor temperature monitoring
sensor detects that the Processor has exceeded the thermal specifications.
3. THERMTRIP#  Assertion indicates that the Processor junction temperature has
reached a level beyond which permanent silicon damage may occur.
3.7.1.12 Processor Active Cooling
The development kit supports PWM-based FAN speed control. Fan circuitry is controlled by the
signal CPU_PWM_FAN signal from the EC. A 4-pin header J4C1 is provided to support FAN
speed output measurement for the CPU.
3.7.2

Chipset

The chipset on the development kit is the Intel
optimized for the Processor, DMI and a highly integrated I/O hub that provides the interface to
peripherals. The following sections describe the motherboard implementation of the Chipset
features which are listed as below:
 8x PCI Express* 2.0 specification ports running at 2.5GT/s
 1x PCI Gold-finger slot (for PCI expansion slots)
 On-board LAN
 6x SATA ports
 Support for CRT, LVDS, HDMI, DP and eDP (embedded DP) displays
 14xUSB connectors
 LPC interface
 Serial IrDA port
 Support for two SPI flash devices
Subsystem features described in this section refer to socket and connector locations on
motherboard. Socket and connector locations are labeled with a letter-number combination
(for example, the first memory DIMM connector is located at J4V1). Please refer to the
silkscreen labeling on motherboard for socket locations.
3.7.2.1 Chipset PCI Express* Support
The development kit supports five on board PCIe* (x1) slots. The Chipset has a total of 8 PCIe
Base Specification, Rev 2.0 ports running at 2.5GT/s. Of those IO ports 5 have been routed to
x1 connectors on board, 2 to Docking and one to LAN.
Dev Kit Manual
®
5 Series Chipset. It provides the interface
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