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Pin 51–100: COM|LPT|Floppy|KB/MS/IR
Pin
Signal
Description
51
LPT | FLPY#
LPT / Floppy Interface Configuration Input
52
HDTV_GND
HDTV Analog Ground
53
VCC
Power +5V
54
GND
Ground
55
STB# | nc
LPT Strobe Signal
56
AFD# | DENSEL
LPT Automatic Feed / Floppy Density Select
57
nc
-
58
PD7 | nc
LPT Data Bus D7
59
IRRX
Infrared Receive
60
ERR# | HDSEL#
LPT Error / Floppy Head Select
61
IRTX
Infrared Transmit
62
PD6 | nc
LPT Data Bus D6
63
RXD2
Data Receive COM2
64
INIT# | DIR#
LPT Initiate / Floppy Direction
65
GND
Ground
66
GND
Ground
67
RTS2#
Request to Send COM2
68
PD5 | nc
LPT Data Bus D5
69
DTR2#
Data Terminal Ready COM2
70
SLIN# | STEP#
LPT Select / Floppy Motor Step
71
DCD2#
Data Carrier Detect COM2
72
PD4 | DSKCHG#
LPT Data Bus D4 / Floppy Disk Change
73
DSR2#
Data Set Ready COM2
74
PD3 | RDATA#
LPT Data Bus D3 / Floppy Raw Data Read
75
CTS2#
Clear to Send COM2
76
PD2 | WP#
LPT Data Bus D / Floppy Write Protect Signal
77
TXD2
Data Transmit COM2
78
PD1 | TRK0#
LPT Data Bus D1 / Floppy Track Signal
79
RI2#
Ring Indicator COM2
80
PD0 | INDEX#
LPT Data Bus D0 / Floppy Index Signal
81
VCC
Power +5V
82
VCC
Power +5V
83
RXD1
Data Receive COM1
84
ACK# | DRV
LPT Acknowledge / Floppy Drive Select
85
RTS1#
Request to Send COM1
86
BUSY# | MOT
LPT Busy / Floppy Motor Select
87
DTR1#
Data Terminal Ready COM1
88
PE | WDATA#
LPT Paper Empty / Floppy Raw Write Data
89
DCD1#
Data Carrier Detect COM1
90
SLCT#|WGATE#
LPT Power On / Floppy Write Enable
91
DSR1#
Data Set Ready COM1
92
MSCLK
Mouse Clock
93
CTS1#
Clear to Send COM1
94
MSDAT
Mouse Data
95
TXD1
Data Transmit COM1
96
KBCLK
Keyboard Clock
97
RI1#
Ring Indicator COM1
98
KBDAT
Keyboard Data
99
GND
Ground
100
GND
Ground
Note:
The termination resistors in this table are already mounted on the ETX® board. Please refer to the design
guide for information about additional termination resistors.
Kontron User's Guide ETX®-CN8
Note: Connector X3 Signal Description
29
4 ETX® Connectors
Type
Termination
Comment
I-5
PU 4k7 5V
High: LPT, Low:
PWR
-
-
PWR
-
-
PWR
-
-
O-5
-
-
O-5
-
-
nc
-
Reserved
IO-5
PU 4k7 5V
-
I-5
-
-
IO-5
-
-
O-5
-
-
IO-5
PU 4k7 5V
-
I-3.3
PU 100k 3.3V
-
O-5
-
-
PWR
-
-
PWR
-
-
O-3.3
PU 100k 3.3V
-
IO-5
PU 4k7 5V
-
O-3.3
PU 100k 3.3V
-
O-5
-
-
I-3.3
PU 100k 3.3V
-
IO-5
PU 4k7 5V
-
I-3.3
PU 100k 3.3V
-
IO-5
PU 4k7 5V
-
I-3.3
PU 100k 3.3V
-
IO-5
PU 4k7 5V
-
O-3.3
PU 4k7 3.3V
-
IO-5
PU 4k7 5V
-
I-3.3
PU 2k2 3.3V
-
IO-5
PU 4k7 5V
-
PWR
-
-
PWR
-
-
O-3.3
PU 100k 3.3V
-
IO-5
-
-
O-3.3
PU 100k 3.3V
-
IO-5
-
-
O-3.3
PU 100k 3.3V
-
IO-5
-
-
I-3.3
PU 100k 3.3V
-
IO-5
-
-
I-3.3
PU 100k 3.3V
-
O-5
-
-
I-5
PU 100k 3.3V
-
IO-5
-
-
O-5
PU 100k 3.3V
-
O-5
-
-
I-5
PU 2k2 3.3V
-
IO-5
-
-
PWR
-
-
PWR
-
-
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