Specifications

9 March 1999 – Subject To Change

Functional Description 4–1

Functional Description

This chapter describes the functional operation of the AlphaPC 164LX. The descrip-

tion introduces the 21174 core logic chip and describes its implementation with the

21164 microprocessor, its supporting memory, and I/O devices. Figure 1–1 shows

the AlphaPC 164LX major functional components.

Bus timing and protocol information found in other data sheets and reference docu-

mentation is not duplicated. See Appendix B for a list of supporting documents and

order numbers.

Note: For detailed descriptions of bus transactions, chip logic, and operation,

refer to the Alpha 21164 Microprocessor Hardware Reference Manual

and the 21174 Core Logic Chip Technical Reference Manual. For details

of the PCI interface, refer to the PCI System Design Guide.