Intel ETX CD User Manual
Page 30
4 ETX® connectors
Kontron User's Guide ETX CD
30
Pin 51–100:
[
Power
|
COM
|
LPT
|
Floppy
|
KB/MS/IR
]
Pin Signal
Description
Type
Termination
Comment
51
LPT | FLPY#
LPT / Floppy Interface Configuration Input
I-5
PU 4k7 5V
High: LPT, Low:
52
nc
-
nc
-
Reserved
53
VCC
Power +5V
PWR
-
-
54
GND
Ground
PWR
-
-
55
STB# | nc
LPT Strobe Signal
O-5
-
-
56
AFD# | DENSEL
LPT Automatic Feed
/
Floppy Density Select
O-5
-
-
57
nc
-
nc
-
Reserved
58
PD7 | nc
LPT Data Bus D7
IO-5
-
-
59
IRRX
Infrared Receive
I-5
-
-
60
ERR# | HDSEL#
LPT Error
/
Floppy Head Select
IO-5
-
-
61
IRTX
Infrared Transmit
O-5
-
-
62
PD6 | nc
LPT Data Bus D6
IO-5
-
-
63
RXD2
Data Receive COM2
I-5
PU 100k 5V
-
64
INIT# | DIR#
LPT Initiate
/
Floppy Direction
O-5
-
-
65
GND
Ground
PWR
-
-
66
GND
Ground
PWR
-
-
67
RTS2#
Request to Send COM2
O-5
PU 100k 5V
-
68
PD5 | nc
LPT Data Bus D5
IO-5
-
-
69
DTR2#
Data Terminal Ready COM2
O-5
PU 100k 5V
-
70
SLIN# | STEP#
LPT Select
/
Floppy Motor Step
O-5
-
-
71
DCD2#
Data Carrier Detect COM2
I-5
PU 100k 5V
-
72
PD4 | DSKCHG#
LPT Data Bus D4
/
Floppy Disk Change
IO-5
-
-
73
DSR2#
Data Set Ready COM2
I-5
PU 100k 5V
-
74
PD3 | RDATA#
LPT Data Bus D3
/
Floppy Raw Data Read
IO-5
-
-
75
CTS2#
Clear to Send COM2
I-5
PU 100k 5V
-
76
PD2 | WP#
LPT Data Bus D2
/
Floppy Write Protect Signal
IO-5
-
-
77
TXD2
Data Transmit COM2
O-5
PU 100k 5V
Bootstrap PU 4k7
78
PD1 | TRK0#
LPT Data Bus D1
/
Floppy Track Signal
IO-5
-
-
79
RI2#
Ring Indicator COM2
I-5
PU 100k 5V
-
80
PD0 | INDEX#
LPT Data Bus D0
/
Floppy Index Signal
IO-5
-
-
81
VCC
Power +5V
PWR
-
-
82
VCC
Power +5V
PWR
-
-
83
RXD1
Data Receive COM1
O-5
PU 100k 5V
-
84
ACK# | DRV
LPT Acknowledge
/
Floppy Drive Select
IO-5
-
-
85
RTS1#
Request to Send COM1
O-5
PU 100k 5V
Bootstrap PU 4k7
86
BUSY# | MOT
LPT Busy
/
Floppy Motor Select
IO-5
-
-
87
DTR1#
Data Terminal Ready COM1
O-5
PU 100k 5V
Bootstrap PU 4k7
88
PE | WDATA#
LPT Paper Empty
/
Floppy Raw Write Data
IO-5
-
-
89
DCD1#
Data Carrier Detect COM1
I-5
PU 100k 5V
-
90
SLCT#|WGATE#
LPT Power On
/
Floppy Write Enable
IO-5
-
-
91
DSR1#
Data Set Ready COM1
I-5
PU 100k 5V
-
92
MSCLK
Mouse Clock
O-5
PU 4k7 5V
-
93
CTS1#
Clear to Send COM1
I-5
PU 100k 5V
-
94
MSDAT
Mouse Data
IO-5
PU 4k7 5V
-
95
TXD1
Data Transmit COM1
O-5
PU 100k 5V
Bootstrap PU 4k7
96
KBCLK
Keyboard Clock
O-5
PU 4k7 5V
-
97
RI1#
Ring Indicator COM1
I-5
PU 100k 5V
-
98
KBDAT
Keyboard Data
IO-5
PU 4k7 5V
-
99
GND
Ground
PWR
-
-
100 GND
Ground
PWR
-
-
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.