XPC564A Datasheet, PDF (41/67 Pages) Freescale Semiconductor, Inc – Evaluation system supporting Freescale MPC564xA microprocessors

J3 – VRH enable
Controls whether power is provided to the Voltage Reference High (VRH)
input pin used by the eQADC module on the MPC564xA processor.
Jumper Setting Effect
On (default) The VRH pin is connected to 5V power
Off
The VRH pin is left disconnected
J4 – VSTBY Configuration
Jumper Setting Effect
On (default) The MPC564xA “VSTBY” pin is pulled down to GND
The MPC564xA “VSTBY” pin is only connected to a
Off
100nF bypass capacitor. External 1V supply should
be applied to this pin.
J14 – I/O Supply Input Enable
Controls whether power is provided to the “I/O Supply Input” pins on the
MPC564xA processor.
Jumper Setting Effect
On (default)
MPC564xA I/O Supply Input pins are connected to
3.3V or 5V (determined by J18)
Off
MPC564xA I/O Supply Input pins are unpowered
xPC564A EVB User Manual
37