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3-pin connector
This 3-pin header, when connected via cable to an input device, provides access to
the system BIOS.
For information about using this connector, see
Null-modem serial cable
RadiSys does not supply the serial cable. To assemble the cable, you will need the
following:
Table C-8. 3-pin connector pin definitions
Pin
Signal
1
COM1:TXD
2
COM1:RXD
3
GND
1
3
Item
Part number
3-pin connector
Molex receptacle 51021-0300
Female crimp terminal
Molex 50058-8100
RS232 connector
Standard RS323 female DB-9 serial connector
Recommended cable
Belden 8643 (Round, 3 Conductor, 30 Gage) or Molex
Series 6800 (Flat, 3 Conductor, 28 Gage),
cut to desired length (i.e. 8- 16 inches)
EPC-6315
EPC-6315
Molex housing
with LRamp
(PN 51021-0300)
Molex termination pin
8–16 inches cable
RS232 female
DB-9 connector
(PN 50058-8100)
5
3
2
Host
Electrical connections
Host
Tx
Rx
Ground
Pin 1 (COM1–TXD)
Pin 2 (COM1–RXD)
Pin 3 (Ground)
TX
RX
GND
GND
TX
RX
* Closest to
board edge
1
2
3*
Summary of Contents for EPS-6315
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