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Parallel Port / Floppy Interfaces
You can configure ETX® parallel port interfaces as conventional PC parallel ports or as an interface for a
floppy-disk drive. You can select the operating mode in the BIOS settings or by a hardware mode-select
pin.
If Pin X3-51 (LPT/FLPY#) is grounded at boot time, the floppy support mode is selected. If the pin is left
floating or is held high, parallel-port mode is selected. The mode selection is determined at boot time. It
cannot be changed until the next boot cycle.
Parallel Port Mode Pinout
Pin
Signal
51
LPT/FLPY#
53
VCC *
55
STB#
57
RESERVED
59
IRRX
61
IRTX
63
RXD2
65
GND
67
RTS2#
69
DTR2#
71
DCD2#
73
DSR2#
75
CTS2#
77
TXD2
79
RI2#
81
VCC *
83
RXD1
85
RTS1#
87
DTR1#
89
DCD1#
91
DSR1#
93
CTS1#
95
TXD1
97
RI1#
99
GND
Notes:
*To protect external power lines of peripheral devices, make sure that:
- the wires have the right diameter to withstand the maximum available current
- the enclosure of the peripheral device fulfils the fire-protection requirements of IEC/EN60950
Kontron User's Guide ETX®-CN8
Pin
Signal
52
RESERVED
54
GND
56
AFD#
58
PD7
60
ERR#
62
PD6
64
INIT#
66
GND
68
PD5
70
SLIN#
72
PD4
74
PD3
76
PD2
78
PD1
80
PD0
82
VCC*
84
ACK#
86
BUSY
88
PE
90
SLCT#
92
MSCLK
94
MSDAT
96
KBCLK
98
KBDAT
100
GND
Floppy Support Mode Pinout
Pin
Signal
51
LPT/FLPY#
53
VCC *
55
RESERVED
57
RESERVED
59
IRRX
61
IRTX
63
RXD2
65
GND
67
RTS2#
69
DTR2#
71
DCD2#
73
DSR2#
75
CTS2#
77
TXD2
79
RI2#
81
VCC *
83
RXD1
85
RTS1#
87
DTR1#
89
DCD1#
91
DSR1#
93
CTS1#
95
TXD1
97
RI1#
99
GND
27
4 ETX® Connectors
Pin
Signal
52
RESERVED
54
GND
56
DENSEL
58
RESERVED
60
HDSEL#
62
RESERVED
64
DIR#
66
GND
68
RESERVED
70
STEP#
72
DSKCHG#
74
RDATA#
76
WP#
78
TRK0#
80
INDEX#
82
VCC *
84
DRV
86
MOT
88
WDATA#
90
WGATE#
92
MSCLK
94
MSDAT
96
KBCLK
98
KBDAT
100
GND
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