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CP307
Functional Description
ID 34424, Rev. 3.0
Page 2 - 23
P R E L I M I N A R Y
2.3.7.2
Rear I/O Configuration
Rear I/O interfaces are only available on Rear I/O versions of the board.
In order to implement the system Rear I/O feature, a system slot Rear I/O backplane is
necessary. This backplane must comply with the CompactPCI Specification PICMG 2.0 R3.0,
October 1999.
Ethernet Interfaces
Gigabit Ethernet signals are available either on the front RJ-45 connector or on the Rear I/O
interface due the implemented switches on the CP307.
Both Gigabit Ethernet channels are individually switchable to front or Rear I/O. Switching over
from front to Rear I/O or vice versa is effected using the BIOS settings or the board-specific
registers (default: front I/O). For further information on the BIOS settings, refer to the CP307
BIOS Guide, Chapter 8, OEM Feature. For further information on the board-specific registers,
refer to chapter 4.5.5, Table 4-10, “I/O Configuration Register”.
VGA Interface
VGA signals are available either on the front VGA connector, J6, or on the Rear I/O interface
due the implemented switches on the CP307. Switching over from front to Rear I/O or vice
versa is effected using the BIOS (default: front I/O).
Serial Interface COM1 and COM2
The COM1 is available either on the front panel of the 8HP CP307 version or on the Rear I/O
interface. Switching over from front to Rear I/O or vice versa is effected using the BIOS settings
or the board-specific registers (default: front I/O). For further information refer to chapter 4.5.5,
Table 4-10, “I/O Configuration Register”.
The COM2 port can be used only on the Rear I/O interface.
USB Interface
There are six independent USB interfaces available, four ports are routed to the 4-pin front
I/O connectors (two on the 4HP CP307 version and two further on the 8HP CP307 version).
The other two ports are only available on the Rear I/O connector.
Warning!
To support the Rear I/O feature a special backplane is necessary. Do not plug
a Rear I/O configured board in a non-system slot Rear I/O backplane. This will
damage the board.
Note ...
The CP307 provides 150
Ω
termination resistors for the red, green and blue
VGA signals.
Thus, further 150
Ω
termination resistors are necessary on the Rear I/O mod-
ule to reach the required 75
Ω
termination for the VGA connection.
Note ...
All six USB ports may be used at the same time. It is strongly recommended to
use cables less than 3 metres in length for the Rear I/O interfaces.
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