LPC47N237-MD SMSC [SMSC Corporation], LPC47N237-MD Datasheet - Page 52

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

Revision 0.3 (10-26-04)
ecpDFifo
ecpAFifo
cnfgA
cnfgB
cFifo
data
tFifo
dsr
dcr
ecr
forward:
reverse:
Pword:
1
0
These terms may be considered synonymous:
PeriphClk, nAck
HostAck, nAutoFd
PeriphAck, Busy
nPeriphRequest, nFault
nReverseRequest, nInit
nAckReverse, PError
Xflag, Select
ECPMode, nSelectln
HostClk, nStrobe
Reference Document: IEEE 1284 Extended Capabilities Port Protocol and ISA Interface Standard, Rev
1.14, July 14, 1993. This document is available from Microsoft.
The bit map of the Extended Parallel Port registers is:
Addr/RLE
compress
nBusy
PD7
D7
0
0
Host to Peripheral communication.
Peripheral to Host communication
A port word; equal in size to the width of the LPC interface. For this implementation, PWord is
always 8 bits.
A high level.
A low level.
intrValue
MODE
nAck
PD6
D6
0
0
Direction
PError
PD5
D5
0
DATASHEET
Parallel Port Data FIFO
Parallel Port IRQ
ECP Data FIFO
nErrIntrEn
ackIntEn
Test FIFO
Select
PD4
Address or RLE field
D4
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1
SelectIn
dmaEn
nFault
PD3
D3
0
3.3v I/O Controller for Port Replicators and Docking Stations
serviceIn
PD2
nInit
D2
0
0
tr
Parallel Port DMA
autof
PD1
D1
full
0
d
0
strobe
empty
SMSC DS – LPC47N237
PD0
D0
0
0
NOTE
(Note
(Note
(Note
(Note
(Note
(Note
9.4)
9.3)
9.3)
9.4)
9.4)
9.4)