Specifications

26 November 1997 – Subject To Change Functional Description 4–1
4
Functional Description
This chapter describes the functional operation of the AlphaPC 164SX. The descrip-
tion introduces the DIGITAL Semiconductor 21174 core logic chip and describes its
implementation with the 21164PC microprocessor, its supporting memory, and I/O
devices. Figure 1–1 shows the AlphaPC 164SX 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 DIGITAL Semiconductor Alpha 21164PC Microprocessor
Hardware Reference Manual and the DIGITAL Semiconductor 21174
Core Logic Chip Technical Reference Manual. For details of the PCI
interface, refer to the PCI System Design Guide.