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63
C
EPC
®
-6320/21
Connectors
H A R D W A R E
R E F E R E N C E
Ethernet Ports
The front panel RJ45 connectors provide support for two 10/100/1000Base-TX
Ethernet channels. The RJ45 connectors do not contain magnetics and LEDs.
3-Pin COM Connector
This optional 3-pin header, when connected via cable to an input device, provides
access to the system BIOS.
Null-Modem Serial Cable
RadiSys does not supply the serial cable. To assemble the cable, you will need the
following:
Table C-5. Ethernet Pin Definitions
Pin
Description
Pin
Description
1
MDI0+
6
MDI2–
2
MDI0–
7
MDI1–
3
MDI1+
8
MDI3+
4
MDI2+
9
MDI3–
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)
Table C-6. 3-Pin Connector Pin Definitions
Pin
Signal
1
COM1–TXD
2
COM1—RXD
3
GND
1
3
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