User`s guide

20 • Jumpers and Connectors
2.2.2 S1, S2, S3 and S4 (Setting LAN1 and LAN2 for Front or Rear
Access)
For convenience with wiring, the cPCI-6765(A) allows for either front or rear
LAN1 and LAN2 access. Note that although both LAN1 and LAN2 are
available on the front and rear, the same LAN port (e.g. LAN1 front and LAN1
rear), cannot be access simultaneously, and are set by dipswitches S1, S2,
S3 and S4. The table below lists the access configuration.
LAN1 LAN2
S1 S2 S3 S4
Front All ON All OFF Front All ON All OFF
Rear or
2.16
Backplane
All OFF All ON
Rear or
2.16
Backplane
All OFF All ON
Table 4: LAN Access Configuration
Note: When switching LAN operation to the rear (Rear operation refers to
either LAN connection on a 2.16 backplane or rear I/O card), user must set S1
or S2 on the RTM module to select which plane to operate on. Refer to the
table below for correct settings of S1 and S2 of the RTM.
LAN1 LAN2
S1 S2
2.16 Backplane All OFF All OFF
Table 5: Setting LAN for 2.16 backplane Operation