5

Input/Output Interfaces

5.1Introduction

This chapter describes the standard (i.e., system board) interfaces that provide input and output (I/O) porting of data and specifically discusses interfaces that are controlled through I/O-mapped registers. The following I/O interfaces are covered in this chapter:

■SATA interface (5.2)

■Diskette drive interface (5.3)

■Serial interfaces (5.4)

■Parallel interface (5.5)

■Keyboard/pointing device interface (5.6)

■Universal serial bus interface (5.7)

■Audio subsystem (5.8)

■Network interface controller (5.9)

5.2SATA Interfaces

These systems provide one, three, or four serial ATA (SATA) interfaces that support tranfer rates up to 3.0 Gb/s and RAID data protection functionality. The SATA interface duplicates most of the functionality of the EIDE interface through a register interface that is equivalent to that of the legacy IDE host adapter.

5.2.1 SATA Programming

The SATA interface is configured as a PCI device during POST and controlled through I/O-mapped registers at runtime. Non-DOS (non-Windows) operating systems may require using Setup (F10) for drive configuration.

 

Technical Reference Guide

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