Datasheet
Preliminary
CPC945 Bridge and Memory Controller
Contents
List of Figures ................................................................................................................. 5
List of Tables ................................................................................................................... 7
Revision Log ................................................................................................................... 9
About This Datasheet ................................................................................................... 11
Who Should Read This Datasheet ........................................................................................................ 11
Related Publications ............................................................................................................................. 11
Conventions Used in This Datasheet .................................................................................................... 11
1. General Information .................................................................................................. 13
1.1 Features .......................................................................................................................................... 13
1.2 Description ...................................................................................................................................... 13
1.3 Revision Register ............................................................................................................................ 14
1.4 Part Number Information ................................................................................................................. 14
2. Overview .................................................................................................................... 17
2.1 Functional Blocks ............................................................................................................................ 17
2.1.1 Processor Interfaces .............................................................................................................. 17
2.1.2 PCI Express Interface ............................................................................................................ 18
2
2.1.3 I C Interfaces ......................................................................................................................... 18
2.1.4 Interrupt Controller ................................................................................................................. 18
2.1.5 Memory Controller ................................................................................................................. 18
2.1.6 HyperTransport Bridge .......................................................................................................... 19
2.2 General Parameters ........................................................................................................................ 19
3. Electrical and Thermal Characteristics ................................................................... 21
3.1 Absolute Maximum Ratings ............................................................................................................ 21
3.2 Package Thermal Specifications ..................................................................................................... 22
3.3 Capacitance .................................................................................................................................... 22
3.4 Recommended dc Operating Conditions ........................................................................................ 23
3.4.1 Guidelines for PLL Filtering for HyperTransport and PCI Express PLLs (AVDD2, AVDDA,
AVDDB) ................................................................................................................................. 25
3.4.2 Guidelines for PLL Filtering for Processor Interface and DDR2 (AVDD) ............................... 26
3.5 Clocks ............................................................................................................................................. 26
3.6 Processor Interface Specifications .................................................................................................. 29
3.7 PCI Express Interface Specification ................................................................................................ 29
2
3.8 I C Interface Specifications ............................................................................................................. 29
3.9 DDR2 SDRAM Interface Specifications .......................................................................................... 30
3.10 HyperTransport Interface Specifications ....................................................................................... 30
A15-6009-03
Contents
December 18, 2007 - IBM Confidential
Page 3 of 69
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