LPC47N227TQFP 데이터 시트보기 (PDF) - SMSC -> Microchip
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LPC47N227TQFP Datasheet PDF : 202 Pages
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TQFP/STQFP
PIN #
NAME
66
Initiate Output/
SYMBOL
nINIT/
FDC Direction nDIR
Control
(Note 4)
67
Printer Select nSLCTIN/
Input/
FDC Step Pulse nSTEP
(Note 4)
68
Port Data 0/
PD0/
FDC Index
nINDEX
69
Port Data 1/
PD1/
FDC Track 0 nTRK0
70
Port Data 2/
PD2/
FDC Write
nWRTPRT
Protected
71
Port Data 3/
PD3/
FDC Read Disk
Data
nRDATA
72
Port Data 4/
PD4/
FDC Disk
nDSKCHG
Change
73
Port Data 5
PD5
74
Port Data 6/
PD6/
FDC Motor
nMTR0
On 0
75
Port Data 7
PD7
77
Printer Selected SLCT/
Status/
FDC Write Gate nWGATE
BUFFER
TYPE PER
FUNCTION1
(OD14/OP14)/
OD14
DESCRIPTION
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.
(OD14/OP14)/
OD14
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.
IOP14/
See FDC Pin definition.
Port Data 0
IS
IOP14/
See FDC Pin definition.
Port Data 1
IS
IOP14/
See FDC Pin definition.
Port Data 2
IS
See FDC Pin definition.
IOP14/
Port Data 3
IS
IOP14/
See FDC Pin definition.
Port Data 4
IS
See FDC Pin definition.
IOP14
IOP14/
Port Data 5
Port Data 6
OD14
See FDC Pin definition.
IOP14
I/
OD12
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.
9
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