TABLE OF CONTENTS
1
2
3
PIN LAYOUT ..........................................................................................................................................................8
PIN CONFIGURATION...........................................................................................................................................9
DESCRIPTION OF PIN FUNCTIONS...................................................................................................................10
3.1
BUFFER TYPE DESCRIPTIONS...........................................................................................................................14
3.2
PINS THAT REQUIRE EXTERNAL PULLUP RESISTORS ..........................................................................................15
4
5
BLOCK DIAGRAM...............................................................................................................................................16
POWER FUNCTIONALITY...................................................................................................................................17
5.1
5.1.1
5.2
VCC POWER..................................................................................................................................................17
3 Volt Operation / 5 Volt Tolerance.........................................................................................................17
USB POWER..................................................................................................................................................17
VTR SUPPORT...............................................................................................................................................17
VREF PIN .....................................................................................................................................................17
INTERNAL PWRGOOD...................................................................................................................................18
32.768 KHZ TRICKLE CLOCK INPUT..................................................................................................................18
TRICKLE POWER FUNCTIONALITY......................................................................................................................18
MAXIMUM CURRENT VALUES............................................................................................................................19
POWER MANAGEMENT EVENTS (PME/SCI) ......................................................................................................19
5.3
5.4
5.5
5.6
5.7
5.8
5.9
6
FUNCTIONAL DESCRIPTION .............................................................................................................................20
6.1
SUPER I/O REGISTERS....................................................................................................................................20
HOST PROCESSOR INTERFACE (LPC)...............................................................................................................20
LPC INTERFACE .............................................................................................................................................21
LPC Interface Signal Definition...............................................................................................................21
LPC Cycles.............................................................................................................................................21
Field Definitions......................................................................................................................................21
LFRAME# Usage....................................................................................................................................21
I/O Read and Write Cycles .....................................................................................................................22
DMA Read and Write Cycles..................................................................................................................22
DMA Protocol .........................................................................................................................................22
Power Management................................................................................................................................22
SYNC Protocol .......................................................................................................................................22
6.2
6.3
6.3.1
6.3.2
6.3.3
6.3.4
6.3.5
6.3.6
6.3.7
6.3.8
6.3.9
6.3.10 LPC Transfer ..........................................................................................................................................23
6.4
6.4.1
USB HUB FUNCTIONAL DESCRIPTION...............................................................................................................24
USB Downstream Port Selection............................................................................................................25
FLOPPY DISK CONTROLLER ....................................................................................................................26
FDC Internal Registers ...........................................................................................................................27
STATUS REGISTER ENCODING..........................................................................................................37
Instruction Set.........................................................................................................................................43
DATA TRANSFER COMMANDS............................................................................................................50
SERIAL PORT (UART) ................................................................................................................................60
INFRARED INTERFACE..............................................................................................................................72
MPU-401 MIDI UART...................................................................................................................................73
Overview.................................................................................................................................................73
Host Interface .........................................................................................................................................73
MIDI Data Port........................................................................................................................................74
Status Port..............................................................................................................................................74
MPU-401 Command Controller ..............................................................................................................76
MIDI UART .............................................................................................................................................77
MPU-401 Configuration Registers..........................................................................................................77
PARALLEL PORT........................................................................................................................................78
IBM XT/AT Compatible, Bi-Directional and EPP Modes.........................................................................79
Extended Capabilities Parallel Port.........................................................................................................84
POWER MANAGEMENT.............................................................................................................................94
SERIAL IRQ.................................................................................................................................................98
INTERRUPT GENERATING REGISTERS..............................................................................................................101
6.5
6.5.1
6.5.2
6.5.3
6.5.4
6.6
6.7
6.8
6.8.1
6.8.2
6.8.3
6.8.4
6.8.5
6.8.6
6.8.7
6.9
6.9.1
6.9.2
6.10
6.11
6.12
6.13 8042 KEYBOARD CONTROLLER DESCRIPTION ...................................................................................102
6.13.1 Keyboard Interface ...............................................................................................................................103
6.13.2 External Keyboard and Mouse Interface...............................................................................................104
6.13.3 Keyboard Power Management .............................................................................................................104
6.13.4 Interrupts ..............................................................................................................................................104
6.13.5 Memory Configurations.........................................................................................................................104
6.13.6 Register Definitions...............................................................................................................................105
SMSC DS – LPC47M14X
Page 4
Rev. 03/19/2001
SMSC [ SMSC CORPORATION ]
