Specifications

17 January 1997 – Subject to Change

Functional Description 4–1

Functional Description

This chapter describes the functional operation of the AlphaPC 164. The description

introduces the Digital Semiconductor 21172 core logic chipset and describes its

implementation with the 21164 microprocessor, its supporting memory, and I/O

devices. Figure 1–1 shows the AlphaPC 164 major functional components.

Information, such as bus timing and protocol, found in other data sheets and

reference documentation is not duplicated. See Appendix F for a list of supporting

documents and order numbers.

Note:

For detailed descriptions of bus transactions, chipset logic, and opera-

tion, refer to the Digital Semiconductor 21164 Alpha Microprocessor

Hardware Reference Manual and the Digital Semiconductor 21172

Core Logic Chipset Technical Reference Manual. For details of the PCI

interface, refer to the PCI System Design Guide.