LPC47N237-MD SMSC [SMSC Corporation], LPC47N237-MD Datasheet - Page 4

• Manufacturer Part Number: LPC47N237-MD
• Description: 3.3V I/O CONTROLLER FOR PORT REPLICATORS AND DOCKING STATIONS
• Manufacturer: SMSC [SMSC Corporation]

8.2
8.3
8.4
8.5
8.6
Chapter 9
9.1
9.2
9.3
9.4
9.5
9.6
Chapter 10
Revision 0.3 (10-26-04)
8.1.9
8.1.10
8.6.1
8.6.2
9.1.1
9.1.2
9.1.3
9.1.4
9.1.5
9.1.6
9.1.7
9.1.8
9.2.1
9.2.2
9.2.3
9.3.1
9.3.2
9.3.3
9.6.1
9.6.2
9.6.3
Programmable Baud Rate Generator (AND Divisor Latches DLH, DLL) ......................................... 38
Effect Of The Reset on Register File ................................................................................................ 38
FIFO Interrupt Mode Operation......................................................................................................... 38
FIFO Polled Mode Opertion .............................................................................................................. 39
Notes On Serial Port Operation ........................................................................................................ 42
IBM XT/AT Compatible, Bi-Directional And EPP Modes .................................................................. 45
EPP 1.9 Operation ............................................................................................................................ 48
EPP 1.7 Operation ............................................................................................................................ 50
Extended Capabilities Parallel Port................................................................................................... 51
Vocabulary ........................................................................................................................................ 51
ECP Implementation Standard.......................................................................................................... 53
Data And ecpAFifo Port.....................................................................................................................................55
Device Status Register (DSR) ...........................................................................................................................55
Device Control Register (DCR)..........................................................................................................................56
cFifo (Parallel Port Data FIFO) ..........................................................................................................................57
ecpDFifo (ECP Data FIFO)................................................................................................................................57
tFifo (Test FIFO Mode) ......................................................................................................................................57
cnfgA (Configuration Register A) .......................................................................................................................58
cnfgB (Configuration Register B) .......................................................................................................................58
ecr (Extended Control Register) ........................................................................................................................58
Mode Switching/Software Control .....................................................................................................................61
ECP Operation ..................................................................................................................................................61
Termination from ECP Mode .............................................................................................................................61
Command/Data .................................................................................................................................................62
Data Compression.............................................................................................................................................62
Pin Definition .....................................................................................................................................................62
LPC Connections...............................................................................................................................................62
Interrupts ...........................................................................................................................................................63
FIFO Operation .................................................................................................................................................63
DMA Transfers ..................................................................................................................................................63
DMA Mode - Transfers from the FIFO to the Host.............................................................................................64
Programmed I/O Mode or Non-DMA Mode .......................................................................................................64
Programmed I/O - Transfers from the FIFO to the Host ....................................................................................64
Programmed I/O - Transfers from the Host to the FIFO ....................................................................................65
Modem Status Register (MSR) ...............................................................................................................37
FIFO Mode Operation.............................................................................................................................42
TX AND RX FIFO Operation...................................................................................................................42
Data Port ................................................................................................................................................45
Status Port..............................................................................................................................................45
Control Port ............................................................................................................................................46
EPP Address Port...................................................................................................................................47
EPP Data Port 0 .....................................................................................................................................47
EPP Data Port 1 .....................................................................................................................................48
EPP Data Port 2 .....................................................................................................................................48
EPP Data Port 3 .....................................................................................................................................48
Software Constraints ..............................................................................................................................48
EPP 1.9 Write .........................................................................................................................................48
EPP 1.9 Read .........................................................................................................................................49
Software Constraints ..............................................................................................................................50
EPP 1.7 Write .........................................................................................................................................50
EPP 1.7 Read .........................................................................................................................................50
Description..............................................................................................................................................53
Register Definitions.................................................................................................................................54
Operation................................................................................................................................................61
Scratchpad Register (SCR).................................................................................................................38
Parallel Port........................................................................................................................ 44
Power Management ........................................................................................................ 66
DATASHEET
Page 4
3.3v I/O Controller for Port Replicators and Docking Stations
SMSC DS – LPC47N237