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Intel 82540EP manual Ground and No Connects, Control Signals, Gnd, CTRL15, CTRL25

Models: 82540EP

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82540EP — Networking Silicon

3.7.3Ground and No Connects

Symbol	Type	Name and Function

GND	P	Ground.

NC	P	No Connect. Do not connect any circuitry to these pins. Pull-up or pull-down resistors
NC	P	should not be connected to these pins.
		should not be connected to these pins.

3.7.4Control Signals

Symbol	Type	Name and Function

		1.5V Control. LDO voltage regulator output to drive external pass transistor. If 1.5V is
CTRL_15	A	already present in the system, leave output unconnected. To achieve optimal D3 power
		consumption (<50 mw), leave the output unconnected and use a high-efficiency
		external switching regulator.

		2.5V Control. LDO voltage regulator output to drive external pass transistor. If 2.5V is
CTRL_25	A	already present in the system, leave output unconnected. To achieve optimal D3 power
		consumption (<50 mw), leave the output unconnected and use a high-efficiency
		external switching regulator.

Datasheet

Page 22

Image 22

Intel 82540EP manual Ground and No Connects, Control Signals, Gnd, CTRL15, CTRL25

Contents

82540EP Gigabit Ethernet Controller Revision AprilDatasheet Date Revision 82540EP Networking Silicon Contents 82540EP Networking Silicon Introduction RX MAC MdioTX MAC Acpi LEDReference Documents Document ScopeProduct Code 82540EP Networking Silicon Features Benefits PCI FeaturesMAC Specific Features Application flexibility for LAN on MotherboardPHY Specific Features HostOffloadingManageability Features A server management processorAdditional Device Features Technology FeaturesSymbol Type Name and Function Signal Type DefinitionsPCI Address, Data and Control Signals PCI Bus InterfaceIRDY# STS PARFRAME# STS TRDY# STSSystem Signals Arbitration SignalsInterrupt Signal Error Reporting SignalsImpedance Compensation Signals Eeprom and Serial Flash Interface SignalsPower Management Signals SMB SignalsLED Signals Miscellaneous SignalsOther Signals XTAL1 AnalogXTAL2 Digital Supplies Test Interface SignalsPower Supply Connections Analog SuppliesGND Control SignalsGround and No Connects CTRL15Absolute Maximum Ratingsa Absolute Maximum RatingsRecommended Operating Conditions Recommended Operating Conditions a Sheet 1Power Specifications D0a DC SpecificationsDC Characteristics Recommended Operating Conditions a Sheet 2Power Specifications Dr Uninitialized Power Specifications D3coldPower Specifications Complete Subsystem Symbol Parameter Condition Min Typ Max O Characteristics= V SS AC Characteristics PCI Bus Interface Clock Parameters Timing Specifications PCI Bus InterfaceSymbol Parameter a PCI 66 MHz PCI 33 MHz Units Min Max TcycSymbol Parameter PCI 66MHz PCI 33 MHz Units Min Max PCI Bus Interface Timing ParametersVTH Symbol Parameter PCI 66 MHz UnitPCI Bus Interface Timing Measurement Conditions VTLInch max Point 1kΩ 10 pF PinInch max Point 50 pF Eeprom Interface Link Interface TimingRise and Fall Times Yyww Device Identification82540EP Product Name Date CodeDatasheet Package InformationSymbol Parameter Value at specified airflow m/s Units Thermal SpecificationsThermal Characteristics Thermal resistance, junction-to-ambientPinout Information SMB Signals Power Management SignalsImpedance Compensation Signals Eeprom and Serial Flash Interface SignalsDigital Power Signals PHY SignalsTest Interface Signals Analog Power SignalsSignal Name Pin Grounds and No Connect SignalsSignal Names in Pin Order Sheet 1 Lanpwrgood SmbclkM66EN REQ# CBE3# Signal Names in Pin Order Sheet 2RST# SMBALRT# CLKRUN# Smbdata GNDIRDY# FRAME# CBE2# GND Signal Names in Pin Order Sheet 3CLK VIO TRDY# Zpcomp STOP# INTA# DEVSEL# Zncomp Signal Names in Pin Order Sheet 4PAR PERR# GNT# CBE1# Signal Names in Pin Order Sheet 5CBE0# PCIAD5 GND PCIAD1 Clkview FLCE# Eesk PCIAD8 PCIAD6 PCIAD3 PCIAD2 Eecs GND Flso Eedi Signal Names in Pin Order Sheet 6PCIAD9 PCIAD7 PCIAD4 Vddo P12Visual Pin Reference C D E F G H J K L M N P

82540EP — Networking Silicon

3.7.3Ground and No Connects

Symbol

GND

Ground.

3.7.4Control Signals

Symbol

CTRL_15

CTRL_25

Datasheet