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Intel
Itanium 2 Processor
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108 pages, 2.76 Mb
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Datasheet
Signals Reference
Contents
Main
Intel Itanium 2 Processor
Datasheet
February 2006
Page
Contents
Page
Figures
Tables
Page
Revision History
Intel Itanium 2 Processor
Product Features
Page
1
1.1 Overview
1.2 Processor Abstraction Layer
1.3 Mixing Processors of Different Frequencies and Cache Sizes
1.4 Terminology
1.5 State of Data
Introduction
1.6 Reference Documents
Page
2
2.1 Itanium 2 Processor System Bus
2.1.1 System Bus Power Pins
2.1.2 System Bus No Connect
2.2 System Bus Signals
2.2.2 Signal Descriptions
2.3 Package Specifications
2.4 Signal Specifications
Table 2-3. Itanium 2 Processor Power Supply Specifications
Table 2-4. AGTL+ Signals DC Specifications (Sheet 1 of 2)
Table 2-5. Power Good Signal DC Specifications
Table 2-6. System Bus Clock Differential HSTL DC Specifications
Table 2-7. TAP Connection DC Specifications
Table 2-4. AGTL+ Signals DC Specifications (Sheet 2 of 2)
Table 2-8. SMBus DC Specifications
Table 2-9. LVTTL Signal DC Specifications
Table 2-10. System Bus Clock Differential HSTL AC Specifications (Sheet 1 of 2)
Table 2-11. SMBus AC Specifications
Table 2-10. System Bus Clock Differential HSTL AC Specifications (Sheet 2 of 2)
2.4.1 Maximum Ratings
Figure 2-1. Generic Clock Waveform
90% Vcc V (3.3V)
T
SMSC
2.5 System Bus Signal Quality Specifications and Measurement Guidelines
2.5.1 Overshoot/Undershoot Magnitude
2.5.2 Overshoot/Undershoot Pulse Duration
2.5.3 Activity Factor
2.5.4 Reading Overshoot/Undershoot Specification Tables
2.5.5 Determining if a System Meets the Overshoot/Undershoot Specifications
Page
Page
2.5.6 Wired-OR Signals
Page
2.6 Power Pod Connector Signals
Page
2.7 Itanium 2 Processor System Bus Clock and Processor Clocking
Page
Page
2.8 Recommended Connections for Unused Pins
Figure 2-7. System Bus Reset and Configuration Timings for Warm Reset
t -2 t -1 t
TC= Bus ratio signals must be asserted no later than RESET#
T
Table 2-26. Connection for Unused Pins (Sheet 2 of 2)
3
000638b
Page
Table 3-1. Pin/Signal Information Sorted by Pin Name (Sheet 2 of 15)
Table 3-1. Pin/Signal Information Sorted by Pin Name (Sheet 3 of 15)
Table 3-1. Pin/Signal Information Sorted by Pin Name (Sheet 4 of 15)
Table 3-1. Pin/Signal Information Sorted by Pin Name (Sheet 5 of 15)
Table 3-1. Pin/Signal Information Sorted by Pin Name (Sheet 6 of 15)
Table 3-1. Pin/Signal Information Sorted by Pin Name (Sheet 7 of 15)
Table 3-1. Pin/Signal Information Sorted by Pin Name (Sheet 8 of 15)
Table 3-1. Pin/Signal Information Sorted by Pin Name (Sheet 9 of 15)
Table 3-1. Pin/Signal Information Sorted by Pin Name (Sheet 10 of 15)
Table 3-1. Pin/Signal Information Sorted by Pin Name (Sheet 11 of 15)
Table 3-1. Pin/Signal Information Sorted by Pin Name (Sheet 12 of 15)
Table 3-1. Pin/Signal Information Sorted by Pin Name (Sheet 13 of 15)
Table 3-1. Pin/Signal Information Sorted by Pin Name (Sheet 14 of 15)
Table 3-1. Pin/Signal Information Sorted by Pin Name (Sheet 15 of 15)
Table 3-2. Pin/Signal Information Sorted by Pin Location (Sheet 1 of 15)
Table 3-2. Pin/Signal Information Sorted by Pin Location (Sheet 2 of 15)
Table 3-2. Pin/Signal Information Sorted by Pin Location (Sheet 3 of 15)
Table 3-2. Pin/Signal Information Sorted by Pin Location (Sheet 4 of 15)
Table 3-2. Pin/Signal Information Sorted by Pin Location (Sheet 5 of 15)
Table 3-2. Pin/Signal Information Sorted by Pin Location (Sheet 6 of 15)
Table 3-2. Pin/Signal Information Sorted by Pin Location (Sheet 7 of 15)
Table 3-2. Pin/Signal Information Sorted by Pin Location (Sheet 8 of 15)
Table 3-2. Pin/Signal Information Sorted by Pin Location (Sheet 9 of 15)
Table 3-2. Pin/Signal Information Sorted by Pin Location (Sheet 10 of 15)
Table 3-2. Pin/Signal Information Sorted by Pin Location (Sheet 11 of 15)
Table 3-2. Pin/Signal Information Sorted by Pin Location (Sheet 12 of 15)
Table 3-2. Pin/Signal Information Sorted by Pin Location (Sheet 13 of 15)
Table 3-2. Pin/Signal Information Sorted by Pin Location (Sheet 14 of 15)
Table 3-2. Pin/Signal Information Sorted by Pin Location (Sheet 15 of 15)
Page
4
4.1 Mechanical Dimensions
Mechanical Specifications
NOTE:
Figure 4-2. Itanium 2 Processor Package
Processor IHS Height Substrate
Height Units
Mechanical Specifications Figure 4-3. Itanium 2 Processor Package Power Tab
4.2 Package Marking
4.2.1 Processor Top-Side Marking
4.2.2 Processor Bottom-Side Marking
Page
Page
5
5.1 Thermal Features
5.1.1 Thermal Alert
5.1.2 Enhanced Thermal Management
5.1.3 Thermal Trip
5.2 Case Temperature
Page
Page
6
Specifications
6.1 System Management Bus
6.1.1 System Management Bus Interface
6.1.2 System Management Interface Signals
Figure 6-1. Logical Schematic of SMBus Circuitry
NOTE: 1.Actual implementation may vary. 2.For use in general understanding of the architecture.
Core
System Board
6.1.3 SMBus Device Addressing
6.2 Processor Information ROM
Table 6-3. EEPROM SMBus Addressing on the Itanium 2 Processor
Table 6-4. Processor Information ROM Format (Sheet 1 of 4)
Table 6-4. Processor Information ROM Format (Sheet 2 of 4)
Table 6-4. Processor Information ROM Format (Sheet 3 of 4)
6.3 Scratch EEPROM
6.4 Processor Information ROM and Scratch EEPROM Supported SMBus Transactions
6.5 Thermal Sensing Device
6.6 Thermal Sensing Device Supported SMBus Transactions
6.7 Thermal Sensing Device Registers
6.7.1 Thermal Reference Registers
6.7.2 Thermal Limit Registers
6.7.3 Status Register
6.7.4 Configuration Register
6.7.5 Conversion Rate Register
A Signals Reference
A.1 Alphabetical Signals Reference
A.1.1 A[49:3]# (I/O)
A.1.2 A20M# (I)
A.1.3 ADS# (I/O)
A.1.6 ATTR[3:0]# (I/O)
A.1.7 BCLKp/BCLKn (I)
A.1.8 BE[7:0]# (I/O)
A.1.9 BERR# (I/O)
A.1.10 BINIT# (I/O)
A.1.11 BNR# (I/O)
A.1.12 BPM[5:0]# (I/O)
A.1.13 BPRI# (I)
A.1.14 BR[0]# (I/O) and BR[3:1]# (I)
A.1.15 BREQ[3:0]# (I/O)
Page
A.1.22 DBSY_C2# (O)
A.1.23 DEFER# (I)
A.1.24 DEN# (I/O)
A.1.25 DEP[15:0]# (I/O)
A.1.26 DHIT# (I)
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Page
A.1.39 IGNNE# (I)
A.1.40 INIT# (I)
A.1.41 INT (I)
A.1.42 IP[1:0]# (I)
A.1.43 LEN[2:0]# (I/O)
Page
A.1.51 RESET# (I)
A.1.52 RP# (I/O)
Page
A.1.59 STBn[7:0]# and STBp[7:0]# (I/O)
A.1.60 TCK (I)
A.1.61 TDI (I)
A.1.62 TDO (O)
A.1.63 THRMTRIP# (O)
A.2 Signal Summaries
Signals Reference
Table A-13. Input Signals
Table A-12. Output Signals (Sheet 2 of 2)
Signals Reference Table A-14. Input/Output Signals (Single Driver)
Table A-15. Input/Output Signals (Multiple Driver)
