Link Interface Timing, Eeprom Interface | Intel 82540EP specification

82540EP — Networking Silicon

4.5.2Link Interface Timing

Table 17. Rise and Fall Times

Symbol	Parameter	Condition	Min	Max	Unit

TR	Clock rise time	0.8 V to 2.0 V	0.7		ns

TF	Clock fall time	2.0 V to 0.8 V	0.7		ns

TR	Data rise time	0.8 to 2.0 V	0.7		ns

TF	Data fall time	2.0 V to 0.8 V	0.7		ns

Figure 9. Link Interface Rise/Fall Timing

2.0V

0.8V

TRTF

4.5.3EEPROM Interface

Table 18. Link Interface Clock Requirements

Symbol	Parameter	Min	Typ	Max	Unit

TPW	EE_SK pulse width		TPERIOD*128		ns

a. The EEPROM clock is derived from a 125 MHz internal clock.

Table 19. Link Interface Clock Requirements

Symbol	Parametera	Min	Typ	Max	Unit

TDOS	EE_DO setup time	TCYC*2			ns

TDOH	EE_DO hold time	0			ns

26TheEE_DOsetupandholdtimeisafunctionofthePCIbusCLKcycletimebutisreferencedtoDatasheetO_EE_SK.

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Intel 82540EP manual Link Interface Timing, Eeprom Interface, Rise and Fall Times

Contents

82540EP Gigabit Ethernet Controller Revision April Datasheet Date Revision 82540EP Networking Silicon Contents 82540EP Networking Silicon Introduction Mdio TX MACRX MAC Acpi LED Product Code Document ScopeReference Documents 82540EP Networking Silicon PCI Features MAC Specific FeaturesFeatures Benefits Application flexibility for LAN on Motherboard PHY Specific Features HostOffloading Manageability Features A server management processor Additional Device Features Technology Features Signal Type Definitions PCI Address, Data and Control SignalsSymbol Type Name and Function PCI Bus Interface PAR FRAME# STSIRDY# STS TRDY# STS Arbitration Signals Interrupt SignalSystem Signals Error Reporting Signals Eeprom and Serial Flash Interface Signals Power Management SignalsImpedance Compensation Signals SMB Signals Other Signals Miscellaneous SignalsLED Signals XTAL2 AnalogXTAL1 Test Interface Signals Power Supply ConnectionsDigital Supplies Analog Supplies Control Signals Ground and No ConnectsGND CTRL15 Absolute Maximum Ratings Recommended Operating ConditionsAbsolute Maximum Ratingsa Recommended Operating Conditions a Sheet 1 DC Specifications DC CharacteristicsPower Specifications D0a Recommended Operating Conditions a Sheet 2 Power Specifications Complete Subsystem Power Specifications D3coldPower Specifications Dr Uninitialized = V SS O CharacteristicsSymbol Parameter Condition Min Typ Max AC Characteristics Timing Specifications PCI Bus Interface Symbol Parameter a PCI 66 MHz PCI 33 MHz Units Min MaxPCI Bus Interface Clock Parameters Tcyc Symbol Parameter PCI 66MHz PCI 33 MHz Units Min Max PCI Bus Interface Timing Parameters Symbol Parameter PCI 66 MHz Unit PCI Bus Interface Timing Measurement ConditionsVTH VTL Inch max Point 50 pF PinInch max Point 1kΩ 10 pF Rise and Fall Times Link Interface TimingEeprom Interface Device Identification 82540EP Product NameYyww Date Code Datasheet Package Information Thermal Specifications Thermal CharacteristicsSymbol Parameter Value at specified airflow m/s Units Thermal resistance, junction-to-ambient Pinout Information Power Management Signals Impedance Compensation SignalsSMB Signals Eeprom and Serial Flash Interface Signals PHY Signals Test Interface SignalsDigital Power Signals Analog Power Signals Grounds and No Connect Signals Signal Names in Pin Order Sheet 1Signal Name Pin Lanpwrgood Smbclk Signal Names in Pin Order Sheet 2 RST# SMBALRT#M66EN REQ# CBE3# CLKRUN# Smbdata GND CLK VIO TRDY# Zpcomp Signal Names in Pin Order Sheet 3IRDY# FRAME# CBE2# GND PAR PERR# GNT# Signal Names in Pin Order Sheet 4STOP# INTA# DEVSEL# Zncomp CBE0# PCIAD5 GND PCIAD1 Clkview FLCE# Eesk Signal Names in Pin Order Sheet 5CBE1# Signal Names in Pin Order Sheet 6 PCIAD9 PCIAD7 PCIAD4PCIAD8 PCIAD6 PCIAD3 PCIAD2 Eecs GND Flso Eedi Vddo P12 Visual Pin Reference C D E F G H J K L M N P