D
ELTA
T
AU
P
OWER
PMAC
R
EFERENCE
JULY
-2015
P
OWER
PMAC
UMAC
465
CPU
B
OARD
H
ARDWARE
R
EFERENCE
9
Hardware Setup
There is virtually no hardware setup required before installation of the Power PMAC UMAC 465
CPU board in the system.
E-Point Jumpers
The E-point jumpers on the board are intended for factory use. Their functionality is listed here
primarily for reference.
E0
: The two pins of E0 at the bottom edge of the board must not be shorted together in normal
operation. Shorting the two pins together with a shunt locks the board in a reset state.
E1
: The two pins of E1 at the bottom edge of the board must not be shorted together in normal
operation. Shorting the two pins together with a shunt disables the watchdog timer circuit. This is
necessary to load “bootstrap” firmware at the factory.
Shorting the two pins of E1 together during an actual application disables an important safety
feature and can be very dangerous!
E3
: Jumper installed for normal operation, this jumper is used at the factory for test purposes.
E4
: Jumper installed for normal operation, this jumper is used at the factory for test purposes.
E5
: No jumper installed for normal operation, this jumper is used at the factory for test purposes.
