QG5000XSL9TH Datasheet, PDF (34/458 Pages) Intel Corporation – Intel 5000X Chipset Memory Controller Hub (MCH)

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2.8
2.9
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Signal Description
Clocks, Reset and Miscellaneous
Signal Name
CORECLKN
CORECLKP
COREVCCA
COREVSSA
ERR[2:0]#
FSBCRES
ODTCRES
FSBSLWCRES
FSBSLWCTRL
FSBVCCA
PWRGOOD
PSEL[2:0]
RESETI#
RSVD
TDIOANODE
TDIOCATHODE
TESTHI
TESTHI_V3REF
VSSQUIET
VSSSEN
VCCSEN
Type
Description
Analog
Differential Processor Core Clock Negative Phase: These pins receive a
low-voltage differential host clock from the external clock synthesizer. This
clock is used by all of the MCH logic that is in the Host clock domain.
Analog
Differential Processor Core Clock Positive Phase: These pins receive a
low-voltage differential host clock from the external clock synthesizer. This
clock is used by all of the MCH logic that is in the Host clock domain.
Analog
Core VCC: Analog Voltage for the PLL
Analog
Core VSS: Analog Voltage for PLL
O
Error Output: Error output signal:
ERR[0] = Correctable and recoverable error from the memory subsystem
ERR[1] = Uncorrectable error from the Intel 5000X chipset MCH
ERR[2] = Fatal error from the Intel 5000X chipset MCH
Analog
Processor Bus Compensation:
Analog
Processor Bus Compensation:
Analog
Processor Bus Slew Rate Compensation:
Power/Other Processor Bus Slew Rate Control:
Analog
FSB VCC: Analog Voltage for the FB-DIMM channel PLL
I
Power OK: When asserted, this signal indicates that all power supplies are
in specification.
I
Processor Speed Select:
I
MCH Reset: This is the hard reset
No Connect Reserved Pin:
Analog
Thermal Diode Anode: This is the anode of the thermal diode
Analog
Thermal Diode Cathode: This is the cathode of the thermal diode
Power
1.5 Volt Pullup:
Power/Other 3.3 Volt Pullup:
Analog
Quiet VSS: Quiet VSS for ODDD
Analog
Quiet VSS: Quiet VSS for Thermal Sensor
Analog
Quiet VCC: Quiet VCC for Thermal Sensor
Power and Ground Signals
Signal Name
V3REF
VCC
VCCSF
VSS
VTT
VCCFBD
VCCPE
Description
SMB VCC: Common 3.3 for SMB buses
VCC Supply: This is the 1.5 V core voltage.
VCC Snoop Filter Supply: This is the 1.5 V core voltage on a separate plane for the snoop
filter.
Ground Return: Common return for power supplies
VTT Supply: VTT is a 1.2 V FSB supply
VCC for System Memory: VCCFBD is 1.8 V for DDR2 power.
VCC for PCI Express ports.
MCH Sequencing Requirements
Power Plane and Sequencing Requirements:
• Clock Valid Timing:
Intel^® 5000X Chipset Memory Controller Hub (MCH) Datasheet