LM4560 datasheet(2/54 Pages) NSC

2 / 54 page

Features (Continued)

n DirectX timer for video/audio synchronization

n Forward pin-compatible with future PCI audio

accelerators

n 100-pin TQFP package

n 3.3V operation

Software Support

n Complete DirectX driver suite (DirectSound3D,

DirectSound, DirectMusic, and DirectInput) for Windows

95 and Windows 98/NT 5.0

n Configuration installation, and diagnostics under real

mode DOS, WindowsWindows 95, and Windows 98

DOS box

n Windows 3.1, 95, NT4.0, Windows 98/NT5.0

configuration, installation, and mixer program

n 1, 2, 4, or 8 Mbytes General MIDI (GM)/General Sound

(GS) compliant sample Library

Block Diagram

Table of Contents

1.0 Pin Description

1.1 Package Diagram

1.2 Pin Description

2.0 Functional Decription

2.1 Device Overview

3.0 Register Description

3.1 PCI Configuration Register Map

3.1.1 PCI Configuration Register Description

3.1.1.1 Device ID & Vendor ID

3.1.1.2 Status & Command

3.1.1.3 Class Code & Revision ID

3.1.1.5 Audio IO Base Register

3.1.1.6 Audio MEM Base Register

3.1.1.7 Subsystem ID & Subsystem vendor ID

3.1.1.8 PCIPM Capability List Pointer Register

3.1.1.9 Max_Lat, Min_Gnt, Interrupt Pin & Interrupt Line

3.1.1.10 DDMA Slave Configuration Register

3.1.1.11 Legacy audio/power management configuration

3.1.1.13 Power management capability register (PMC)

3.1.1.14

Power

management

control/status

(PMCSR) & PMCSR_BSE & Data

3.2 Audio Processor Register Map

3.3 Audio Processor Register Access Mode

3.3.1 I/O Access Mode

3.3.2 Memory Access Mode

3.4 Audio Processor Register Description

3.4.1 DMA Registers

3.4.1.1 DMAR0 (Legacy DMA Playback Buffer Base Regis-

ter Port1)

3.4.2 Legacy Sound Blaster/Adlib Registers

3.4.3 Legacy MPU-401 Registers

3.4.4 Legacy Gameport Register

3.4.5 Serial Interface Control Register

3.4.6 Misc and Status Register

3.4.7 OPL3 Channel Status Register

3.4.8 S/PDIF & GPIO Registers

3.4.9 Wave Engine Registers

3.4.9.31 F4h_A (EBUF1) ( Bank A Only)

4.0 Functional Description

4.1 Wave Engine

4.1.1 Scheduler

4.1.2 Address Engine

4.1.3 Envelope Engine

4.1.4 Interpolation & Volume Adjustment

4.1.5 Digital Mixer

4.1.6 LFO

4.1.7 Recording

DS100910-1

LM4560 Datasheet(PDF) 2 Page - National Semiconductor (TI)

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