LPC47N227TQFP Standard Microsystems (SMSC), LPC47N227TQFP Datasheet - Page 9

• Manufacturer Part Number: LPC47N227TQFP
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LPC47N227TQFP

• Lead Free Status / RoHS Status: Not Compliant

TQFP/STQFP
PIN #
66
67
68
69
70
71
72
73
74
75
77
Initiate Output/
FDC Direction
Control
(Note 4)
Printer Select
Input/
FDC Step Pulse
(Note 4)
Port Data 0/
FDC Index
Port Data 1/
FDC Track 0
Port Data 2/
FDC Write
Protected
Port Data 3/
FDC Read Disk
Data
Port Data 4/
FDC Disk
Change
Port Data 5
Port Data 6/
FDC Motor
On 0
Port Data 7
Printer Selected
Status/
FDC Write Gate
NAME
nINIT/
nDIR
nSLCTIN/
nSTEP
PD0/
nINDEX
PD1/
nTRK0
PD2/
nWRTPRT
PD3/
nRDATA
PD4/
nDSKCHG
PD5
PD6/
nMTR0
PD7
SLCT/
nWGATE
SYMBOL
(OD14/OP14)/
(OD14/OP14)/
FUNCTION
TYPE PER
BUFFER
IOP14/
IOP14/
IOP14/
IOP14/
IOP14/
IOP14/
IOP14
IOP14
OD14
OD14
OD14
OD12
IS
IS
IS
IS
IS
I/
1
9
This output is bit 2 of the printer control register.
This is used to initiate the printer when low.
Refer to Parallel Port description for use of this
pin in ECP and EPP mode.
See FDC Pin definition.
This active low output selects the printer. This is
the complement of bit 3 of the Printer Control
Register.
Refer to Parallel Port description for use of this pin
in ECP and EPP mode.
See FDC Pin definition.
Port Data 0
See FDC Pin definition.
Port Data 1
See FDC Pin definition.
Port Data 2
See FDC Pin definition.
Port Data 3
See FDC Pin definition.
Port Data 4
See FDC Pin definition.
Port Data 5
Port Data 6
See FDC Pin definition.
Port Data 7
This high active output from the printer indicates
that it has power on. Bit 4 of the Printer Status
Register reads the SLCT input. Refer to Parallel
Port description for use of this pin in ECP and EPP
mode.
See FDC Pin definition.
DESCRIPTION