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LPC47S457-NC Datasheet(PDF) 3 Page - SMSC Corporation

Part # LPC47S457-NC
Description  Advanced I/O with X-Bus Interface
Download  259 Pages
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

LPC47S457-NC Datasheet(HTML) 3 Page - SMSC Corporation

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SMSC LPC47S45x
Page 3 of 259
Rev. 06-01-06
DATASHEET
TABLE OF CONTENTS
1
GENERAL DESCRIPTION .................................................................................................................... 9
2
PIN CONFIGURATION ........................................................................................................................ 10
3
PINOUT ................................................................................................................................................ 11
4
PIN DESCRIPTION .............................................................................................................................. 12
4.1
BUFFER TYPE DESCRIPTIONS ............................................................................................................................17
4.2
PINS THAT REQUIRE EXTERNAL PULLUP RESISTORS............................................................................................18
5
DESCRIPTION OF POWER SOURCES AND CLOCK INPUT/OUTPUTS......................................... 19
5.1
3.3 VOLT OPERATION / 5 VOLT TOLERANCE ........................................................................................................19
5.2
POWER FUNCTIONALITY ....................................................................................................................................19
5.2.1
VCC Power.............................................................................................................................................19
5.2.2
VTR Support...........................................................................................................................................19
5.2.3
Vbat Input ...............................................................................................................................................19
5.3
INTERNAL PWRGOOD.....................................................................................................................................20
5.4
32.768 KHZ TRICKLE CLOCK INPUT...................................................................................................................20
5.5
INDICATION OF 32KHZ CLOCK ...........................................................................................................................20
5.6
XOSEL...........................................................................................................................................................21
5.7
TRICKLE POWER FUNCTIONALITY .......................................................................................................................21
5.8
40MHZ CLOCK OUTPUT....................................................................................................................................23
5.9
MAXIMUM CURRENT VALUES .............................................................................................................................23
5.10
POWER MANAGEMENT EVENTS (PME/SCI) ....................................................................................................23
6
FUNCTIONAL DESCRIPTION............................................................................................................. 24
6.1
SUPER I/O REGISTERS......................................................................................................................................24
6.2
HOST PROCESSOR INTERFACE (LPC) ................................................................................................................24
6.3
LPC INTERFACE ...............................................................................................................................................24
6.3.1
LPC Interface Signal Definition...............................................................................................................25
6.3.2
Power Management................................................................................................................................26
6.3.3
LPC Transfers ........................................................................................................................................27
6.4
FLOPPY DISK CONTROLLER ...............................................................................................................................28
6.4.1
FDC Internal Registers ...........................................................................................................................28
6.4.2
Status Register Encoding .......................................................................................................................38
6.4.3
DMA Transfers........................................................................................................................................41
6.4.4
Controller Phases ...................................................................................................................................41
6.4.5
Command Set/Descriptions ....................................................................................................................42
6.4.6
Instruction Set.........................................................................................................................................45
6.4.7
Data Transfer Commands ......................................................................................................................51
6.4.8
Control Commands.................................................................................................................................57
6.4.9
Direct Support for Two Floppy Drives .....................................................................................................62
6.5
SERIAL PORT (UART) ......................................................................................................................................63
6.5.1
Register Description ...............................................................................................................................63
6.5.2
Programmable Baud Rate Generator (AND Divisor Latches DLH, DLL) ................................................70
6.5.3
Effect Of The Reset on Register File ......................................................................................................70
6.5.4
FIFO Interrupt Mode Operation ..............................................................................................................70
6.5.5
FIFO Polled Mode Opertion....................................................................................................................71
6.5.6
Notes On Serial Port Operation ..............................................................................................................75
6.6
INFRARED INTERFACE........................................................................................................................................76
6.6.1
IR Transmit Pin.......................................................................................................................................76
6.7
PARALLEL PORT ...............................................................................................................................................77
6.7.1
IBM XT/AT Compatible, Bi-Directional And EPP Modes........................................................................78
6.7.2
EPP 1.9 Operation..................................................................................................................................80
6.7.3
EPP 1.7 Operation..................................................................................................................................81
6.7.4
Extended Capabilities Parallel Port.........................................................................................................83
6.7.5
Vocabulary..............................................................................................................................................83
6.7.6
ECP Implementation Standard ...............................................................................................................83


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