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PM5358 S/UNI-4x622 Driver Manual
Introduction
Proprietary and Confidential to PMC-Sierra, Inc. 13
Document ID: PMC-2010419, Issue 1
1 INTRODUCTION
The following sections of the S/UNI-4x622 Device Driver Design Specification describe the
S/UNI-4x622 device driver. The code provided throughout this document is written in ANSI-C.
This has been done to promote greater driver portability to other embedded hardware (Section 5)
and Real-Time Operating System (RTOS) environments (Section 6).
Section 2 of this document, Software Architecture, defines the software architecture of the
S/UNI-4x622 device driver by including a discussion of the driver’s external interfaces and its
main components. The Data Structure information in Section 3 describes the elements of the
driver that either configure or control its behavior. Included here are the constants, variables, and
structures that the S/UNI-4x622 device driver uses to store initialization, configuration, and status
information. Section 4 provides a detailed description of each function that is a member of the
S/UNI-4x622 driver Application Programming Interface (API). This section outlines function
calls that hide device-specific details and application callbacks that notify the user of significant
device events.