LPC47B34X datasheet(3/250 Pages) SMSC

3 / 250 page

TABLE OF CONTENTS

FEATURES ....................................................................................................................................... 1

GENERAL DESCRIPTION ................................................................................................................ 2

PIN CONFIGURATION...................................................................................................................... 6

DESCRIPTION OF PIN FUNCTIONS ................................................................................................ 7

Buffer Type Descriptions .............................................................................................................. 11

3.3 Volt Operation /5 Volt Tolerance ............................................................................................. 12

Pins That Require External Pullup Resistors ................................................................................. 13

POWER FUNCTIONALITY .............................................................................................................. 14

VCC Power .................................................................................................................................. 14

VTR Support ................................................................................................................................ 14

VBAT Power ................................................................................................................................ 14

Internal PWRGOOD..................................................................................................................... 14

32.768 kHz Trickle Clock Input ..................................................................................................... 14

Indication of 32kHz Clock ............................................................................................................. 15

Internal Ring Oscillator................................................................................................................. 15

Trickle Power Functionality........................................................................................................... 17

Battery Power Functionality .......................................................................................................... 19

Maximum Current Values ............................................................................................................. 19

Power Management Events (PME/SCI) ........................................................................................ 19

FUNCTIONAL DESCRIPTION......................................................................................................... 20

Super I/O Registers...................................................................................................................... 20

Host Processor Interface (LPC) .................................................................................................... 20

LPC Interface ............................................................................................................................... 20

FLOPPY DISK CONTROLLER........................................................................................................ 25

FDC Internal Registers ................................................................................................................. 25

Status Register Encoding ............................................................................................................. 39

DMA Transfers ............................................................................................................................. 43

Controller Phases......................................................................................................................... 43

Command Set/Descriptions.......................................................................................................... 45

Instruction Set.............................................................................................................................. 48

Data Transfer Commands ............................................................................................................ 60

Control Commands ...................................................................................................................... 67

Direct Support for Two Floppy Drives ........................................................................................... 74

SERIAL PORT (UART).................................................................................................................... 76

Register Description ..................................................................................................................... 76

Programmable Baud Rate Generator (AND Divisor Latches DLH, DLL) ........................................ 85

Effect Of The Reset on Register File............................................................................................. 85

FIFO Interrupt Mode Operation..................................................................................................... 85

FIFO Polled Mode Operation ........................................................................................................ 86

Notes On Serial Port Operation .................................................................................................... 90

Ring Wake Filter .......................................................................................................................... 91

INFRARED INTERFACE ................................................................................................................. 92

IR Transmit Pins .......................................................................................................................... 93

PARALLEL PORT........................................................................................................................... 93

IBM XT/AT Compatible, Bi-Directional And EPP Modes ............................................................... 95

EPP 1.9 Operation ....................................................................................................................... 97

EPP 1.7 Operation ....................................................................................................................... 99

Extended Capabilities Parallel Port ..............................................................................................101

LPC47B34X Datasheet(PDF) 3 Page - SMSC Corporation

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