LPC47N237-MD SMSC [SMSC Corporation], LPC47N237-MD Datasheet - Page 45
LPC47N237-MD
Manufacturer Part Number
LPC47N237-MD
Description
3.3V I/O CONTROLLER FOR PORT REPLICATORS AND DOCKING STATIONS
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.LPC47N237-MD.pdf
(138 pages)
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3.3v I/O Controller for Port Replicators and Docking Stations
(1) = Compatible Mode
(3) = High Speed Mode
Note:
9.1
9.1.1
9.1.2
SMSC DS – LPC47N237
CONNECTOR
For the cable interconnection required for ECP support and the Slave Connector pin numbers, refer to the
IEEE 1284 Extended Capabilities Port Protocol and ISA Standard, Rev. 1.14, July 14, 1993.
document is available from Microsoft.
IBM XT/AT Compatible, Bi-Directional And EPP Modes
Data Port
ADDRESS OFFSET = 00H
The Data Port is located at an offset of '00H' from the base address. The data register is cleared at
initialization by RESET. During a WRITE operation, the Data Register latches the contents of the internal
data bus. The contents of this register are buffered (non inverting) and output onto the PD0 - PD7 ports.
During a READ operation in SPP mode, PD0 - PD7 ports are buffered (not latched) and output to the host
CPU.
Status Port
ADDRESS OFFSET = 01H
The Status Port is located at an offset of '01H' from the base address. The contents of this register are
latched for the duration of a read cycle. The bits of the Status Port are defined as follows:
BIT 0 TMOUT - TIME OUT
This bit is valid in EPP mode only and indicates that a 10 usec time out has occurred on the EPP bus. A
logic zero means that no time out error has occurred; a logic 1 means that a time out error has been
detected.
HOST
2-9
10
11
12
13
14
15
16
17
1
PIN NUMBER
SMSC
68-75
83
80
79
78
77
82
81
66
67
Table 9.1 - Parallel Port Connector
DATASHEET
nSTROBE
PD<0:7>
nACK
BUSY
PE
SLCT
nALF
nERROR
nINIT
nSLCTIN
STANDARD
Page 45
nWrite
PData<0:7>
Intr
nWait
(User Defined)
(User Defined)
nDatastb
(User Defined)
nRESET
nAddrstrb
EPP
nStrobe
PData<0:7>
nAck
Busy, PeriphAck(3)
PError,
nAckReverse(3)
Select
nAutoFd,
HostAck(3)
nFault(1)
nPeriphRequest(3)
nInit(1)
nReverseRqst(3)
nSelectIn(1,3)
ECP
Revision 0.3 (10-26-04)
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