P&E Microcomputer Systems XPC560P EVB User Manual - page 46
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xPC560P EVB User Manual
Both of the jumpers below need to be installed to enable the crystal clock
source.
J11 – External clock source enable
The xPC560P Mini-Module contains a footprint for an SMA connector, which
can be used to provide an external clock source to the system.
Jumper Setting
Effect
1+2 (default)
The MPC560xP “XTAL” signal is connected to the
crystal clock source on the xPC560P Mini‐Module
3+4 (default)
The MPC560xP “EXTAL” signal is connected to the
crystal clock source on the xPC560P Mini‐Module
Jumper Setting
Effect
On
The MPC560xP “EXTAL” signal is connected to the
SMA connector on the xPC560P Mini‐Module
Off (default)
The SMA connector on the xPC560P Mini‐Module is
disconnected from the processor