AMD 27488, 27493, 10 manual Sysclk and SYSCLK# DC Characteristics

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Preliminary Information

26237C —May 2003

AMD Athlon™ XP Processor Model 10 Data Sheet

8.9SYSCLK and SYSCLK# DC Characteristics

Table 15 shows the DC characteristics of the SYSCLK and SYSCLK# differential clocks. The SYSCLK signal represents CLKIN and RSTCLK tied together while the SYSCLK# signal represents CLKIN# and RSTCLK# tied together. For more information about SYSCLK and SYSCLK#, see “SYSCLK and SYSCLK#” on page 77 and Table 23, “Pin Name Abbreviations,” on page 56.

Table 15. SYSCLK and SYSCLK# DC Characteristics

Symbol	Description	Min	Max	Units

VThreshold-DC	Crossing before transition is detected (DC)	400		mV
VThreshold-AC	Crossing before transition is detected (AC)	450		mV
ILEAK_P	Leakage current through P-channel pullup to VCC_CORE	–1		mA
ILEAK_N	Leakage current through N-channel pulldown to VSS (Ground)		1	mA
VCROSS	Differential signal crossover		VCC_CORE / 2±100	mV
CPIN	Capacitance *	4	25 *	pF

Note:

* The following processor inputs have twice the listed capacitance because they connect to two input pads—SYSCLK and SYSCLK#. SYSCLK connects to CLKIN/RSTCLK. SYSCLK# connects to CLKIN#/RSTCLK#.

Figure 11 shows the DC characteristics of the SYSCLK and

SYSCLK# signals.

VCROSS

VThreshold-DC = 400mV

VThreshold-AC = 450mV

Figure 11. SYSCLK and SYSCLK# Differential Clock Signals

Chapter 8

Electrical Data

35

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Contents Data Sheet 2002, 2003 Advanced Micro Devices, Inc. All rights reserved Table of Contents Mechanical Data Ordering Information Preliminary Information List of Figures Logic Symbol DiagramViii List of Tables List of Tables May Revision HistoryDate Rev , revised wording in the OverviewXii Delivering extreme performance for Windows XP OverviewQuantiSpeed Architecture Summary LAN Preliminary Information Overview Interface SignalsSignaling Technology Push-Pull PP Drivers AMD Athlon System Bus SignalsDiode Logic Symbol DiagramFrequency Control Front-Side Bus Autodetect Legacy Preliminary Information Power Management States Power ManagementHalt State Working StatePreliminary Information Connect Protocol Connect and Disconnect ProtocolProbe State Preliminary Information Procrdy Exiting the Stop Grant State and Bus Connect Sequence Connect State DiagramNorthbridge Connect Pending Disconnect Disconnect4/CDisconnect request Return internal clocks to full speed and assertClock Control Cpuid Support Preliminary Information 12.1 a MaximumMaximum Typical 68.3 W 53.7 WDuty Cycle Advanced 333 FSB Sysclk and SYSCLK# AC CharacteristicsParameter Description Minimum Maximum Clock FrequencyAdvanced 333 FSB AMD Athlon System Bus AC Characteristics Advanced 333 FSB AMD Athlon System Bus DC Characteristics Advanced 333 FSB AMD Athlon System Bus DC Characteristics76.8 W 60.4 W Maximum Typical 2100 3000+12.1 a 68.3 W 53.7 W 2200 3200+Advanced 400 FSB Sysclk and SYSCLK# AC Characteristics Advanced 400 FSB AMD Athlon System Bus AC Characteristics Advanced 400 FSB AMD Athlon System Bus DC Characteristics Advanced 400 FSB AMD Athlon System Bus DC CharacteristicsConventions Interface Signal GroupingsInterface Signal Groupings Electrical DataVoltage Identification VID40 VID40 DC CharacteristicsFrequency Identification FID30 Vcca AC and DC CharacteristicsFID30 DC Characteristics Vcca AC and DC CharacteristicsVcccore AC and DC Characteristics Vcccore CharacteristicsVcccore Voltage Waveform Absolute Ratings Absolute RatingsSysclk and SYSCLK# DC Characteristics Sysclk and SYSCLK# DC CharacteristicsGeneral AC and DC Characteristics General AC and DC CharacteristicsInput Time to Reacquire Signal Rise TimeSignal Fall Time Input Time to Acquire50 Ω ±3% Open-Drain Pin IOL = Output Current2 Open Drain Test CircuitThermal Diode Thermal Diode CharacteristicsCharacteristics Thermal Diode Electrical Characteristics500 Symbol Parameter Description Max UnitsGuidelines for Platform Thermal Protection of the Processor Apic Pin AC and DC Characteristics Apic Pins AC and DC CharacteristicsPreliminary Information Power-Up Requirements Signal and Power-Up RequirementsPwrok Preliminary Information Selection FID30 Processor Warm Reset RequirementsClock Multiplier Location Dynamic MAX Static MAX Units Die Surface 100 Mechanical DataDie Loading Mechanical Loading453 Letter or Minimum MaximumPreliminary Information Dimension 49.27 49.78 D1/E1 45.72 BSC 917 REF 42 REF 977 Preliminary Information Preliminary Information Pin Descriptions Pin Diagram and Pin Name AbbreviationsAMD Athlon XP Processor Bottomside View Pin Name Abbreviations AD30 Abbreviation Full Name Pin Q31 S31 U31 U37 W31 Y31 Y33AA31 AC31AL33 AE33AJ35 AG37E15 W33J35 E27F34 F24F28 F32AM14 AK34AK36 AM10V36 V30V32 V34Pin List A35 SDATA40# A37 SDATA30# Cross-Reference by Pin LocationPin Name No PinNC Pin F10 SDATA52# E11 SDATA50# E13 SDATA49# E15E29 SDATA33# E31 SDATA32# Pin Name E33 NC Pin E35 SDATA31# E37 SDATA22#J37 SDATA29# NC Pin H10 H12H28 NC Pin H30 H32 H34 NC Pin VID4 J31 J33 SDATA19# J35U31 NC Pin U33 Key Pin Q31 NC Pin Q33 SDATA24# Q35 SDATA17# Q37 SDATA16#S31 NC Pin S33 S35 SDATA15# S37Y37 SDATA12# FID0 FID1NC Pin W31 W33 FID2 FID3 NC Pin Key Pin Y31 Y33 Y35AF20 NC Pin AD30 AD32AE31 NC Pin AE33 NC Pin AF10 AF12NC Pin AK10 AH30 FSBSense1 AH32NC Pin AJ11 AJ13 Analog AJ15 AJ17 AJ19 AJ21 AJ27 NC Pin AJ29AN11 NC Pin AN13 AL25 NC Pin AL27 AL29NC Pin AM10 NC Pin NameDetailed Pin Descriptions Connect Pin Sysclk PinsCOREFB# Pins PinsFID30 Clock Multiplier Encodings FID30 PinsINIT# Pin Front-Side Bus Sense Truth TableFLUSH# Pin IGNNE# PinNC Pins Jtag PinsK7CLKOUT# Pins Key PinsVID40 Pins SADDOUT10# PinsScan Pins Thermdc PinsVID40 ZN and ZP PinsVID40 Code to Voltage Definition Vrefsys PinStandard AMD Athlon XP Processor Model 10 Products Ordering InformationPreliminary Information Constants and Variables for the Ideal Diode Equation Ideal Diode EquationTemperature Offset Correction --- I-- high------  Preliminary Information Appendix B Signals and BitsData Terminology Abbreviation Meaning Abbreviations and AcronymsAbbreviations API AcronymsNMI VGA Related Publications Preliminary Information

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