BUFFER TYPE
PER
FUNCTION
(NOTE 1)
BUFFER
TYPE
POWER
WELL
PIN #
86
NAME
FUNCTION
nSTROBE
/nDS0
Strobe Output/FDC Drive Select
OP14
(OD14/OP14)/
OD14
VCC
SERIAL PORT 1 INTERFACE (8)
Receive Data 1
87
88
89
90
91
92
93
RXD1
TXD1
IS
IS
VCC
VCC
VCC
VCC
VCC
VCC
Transmit Data 1
O12
O12
nDSR1
nRTS1
nCTS1
nDTR1
nRI1
Data Set Ready 1
I
I
Request to Send 1
Clear to Send 1
O8
O8
I
I
Data Terminal Ready 1
Ring Indicator 1
O6
I
O6
I
VCC
(Note 13)
94
95
nDCD1
Data Carrier Detect 1
I
I
VCC
SERIAL PORT 2 INTERFACE (8)
General Purpose I/O /Ring Indicator 2
GP50 /nRI2
IO8
IO8
(I/O8/OD8)/I
(I/O8/OD8)/I
VCC
(Note 13)
97
GP51
General Purpose I/O /Data Carrier Detect 2
VCC
/nDCD2
(Note 13)
98
GP52 /RXD2
/IRRX
General Purpose I/O /Receive Data 2 /IRRX IS/O8
(IS/O8/OD8) /IS VCC
(Note 13)
99
GP53 /TXD2
/IRTX
General Purpose I/O /Transmit Data 2 /IRTX IO12
(Note 5, 6)
(I/O12/OD12)
/O12 /O12
VTR
(Note 13)
100
101
GP54 /nDSR2 General Purpose I/O /Data Set Ready 2
IO8
(I/O8/OD8) /I
VCC
(Note 13)
GP55 /nRTS2 General Purpose I/O /Request to Send 2
IO8
(I/O8/OD8) /O8
VCC
/SADR0
/SMBus2 Slave Address 0
(Note 13)
102
103
GP56 /nCTS2 General Purpose I/O /Clear to Send 2
IO8
IO8
(I/O8/OD8) /I
VCC
(Note 13)
VCC
GP57 /nDTR2 General Purpose I/O /Data Terminal Ready
(I/O8/OD8) /O8
/SADR1
2 /SMBus2 Slave Address 1
(Note 13)
X-BUS PINS (18)
116
117
118
119
120
121
122
123
XD0/ GP10
XD1/ GP11
XD2/ GP12
XD3/ GP13
XD4/ GP14
XD5/ GP15
XD6/ GP16
XD7/ GP17
X-Bus Data Bit 0 /General Purpose I/O
IO8
IO8
IO8
IO8
IO8
IO8
IO8
IO8
IO8 /(I/O8/OD8) VCC
(Note 13)
IO8 /(I/O8/OD8) VCC
(Note 13)
IO8 /(I/O8/OD8) VCC
(Note 13)
IO8 /(I/O8/OD8) VCC
(Note 13)
IO8 /(I/O8/OD8) VCC
(Note 13)
IO8 /(I/O8/OD8) VCC
(Note 13)
IO8 /(I/O8/OD8) VCC
(Note 13)
IO8 /(I/O8/OD8) VCC
(Note 13)
X-Bus Data Bit 1 /General Purpose I/O
X-Bus Data Bit 2 /General Purpose I/O
X-Bus Data Bit 3 /General Purpose I/O
X-Bus Data Bit 4 /General Purpose I/O
X-Bus Data Bit 5 /General Purpose I/O
X-Bus Data Bit 6 /General Purpose I/O
X-Bus Data Bit 7 /General Purpose I/O
SMSC DS – LPC47S45x
Page 14 of 259
Rev. 07/09/2001
DATASHEET
SMSC [ SMSC CORPORATION ]
