PC87351 datasheet(6/86 Pages) NSC

6 / 86 page

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Contents at a Glance

This datasheet is organized to reflect two major topics: device specific issues (Highlights through Chapter 2), and propri-

etary functional blocks (Chapters 3 through 10). Chapter 11 summarizes the AC/DC device characteristics.

Highlights ................................................................................................................................................ 1

This chapter provides a description and block diagram of the PC87351 major functional blocks, the features that make this

device outstanding as compared with comparable devices, and the features of each functional block.

Datasheet Revision Record ................................................................................................................... 4

This chapter serves two functions: it provides a record of the datasheet revisions; it documents the major changes of this

revision as compared with the previous one. Each change is cross-referenced and linked to the change location within the

datasheet.

Signal/Pin Connection and Description ............................................................................................. 11

This chapter includes four major sections: a connection diagram that shows all pins and their related signals; an alphabetical

directory of all signals/pins linked to a table where more detailed information is provided; a summary of all multiplexed signals

and how to configure them for default and alternate settings, and functionally grouped tables that describe each signal/pin

in detail.

Device Architecture and Configuration.............................................................................................. 24

This chapter presents all PC87351 device specific information on the relevant functional blocks, as well as hardware and

software configuration procedures and the related configuration registers.

System Wake-Up Control (SWC)......................................................................................................... 51

This chapter describes the system wake-up capabilities of the PC87351, designed to maximize device functionality while

minimizing power consumption.

General-Purpose Input/Output (GPIO) Port ....................................................................................... 57

This chapter describes a single 8-bit GPIO port, whose operation is associated with two register sets. Refer to the Device

Architecture and Configuration chapter for the specific implementation in this device.

Fan Speed Control................................................................................................................................ 64

This chapter describes the Fan Speed Control, a programmable Pulse Width Modulation (PWM) generator whose output is

used to control the fan’s power voltage. Refer to the

Device Architecture and Configuration chapter for the specific imple-

mentation in this device.

6-10 Legacy Functional Blocks

Please refer to the PC87307, PC87309 or PC87317 Datasheet for information on the Keyboard and Mouse Controller

(KBC), Serial Port 1, Serial Port 2 with IR, Parallel Port and Floppy Disk Controller (FDC).

Device Characteristics ....................................................................................................................................... 72

This chapter provides DC electrical characteristics, both general and of all device pins, as well as AC electrical characteris-

tics.

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