User's Manual

PMAC VME Hardware Reference Manual
PMAC VME CPU Boards 15
PMAC VME CPU BOARDS
Current PMAC1 VME cards use the Flex CPU. For information regarding the Flex CPU, refer to the
Flex CPU User manual.
For convenience, two other versions of the CPU have been included in this manual.
Legacy PMAC Universal CPU (602705-10x)
The following jumper descriptions are for the PMAC CPU, part number 602705-107.
E1: Watchdog Disable Jumper
E Point and
Physical Layout
Location Description Default
E1 Jump pin 1 to 2 to disable watchdog timer (for
test purposes only).
Remove jumper to enable Watchdog timer.
No jumper
E2-E3: Expansion Port Configure
E Point and
Physical Layout
Location Description
E2
No longer used No Jumper
E3
No longer used No Jumper
E4: Power-Up/Reset Load Source
E Point and
Physical Layout
Location Description Default
E4
Jump pin 1 to 2 to reload firmware through
serial or bus port. Must also install E51 jumper
on baseboard.
Remove jumper for normal operation.
No jumper
E8: Expansion Port Configure
E Point and
Physical Layout
Location Description Default
E8 Jump pin 1 to 2 for using the Acc-24P2
expansion board.
Remove jumper for normal operation.
No jumper