Motorola MVME162P-242, Installation And Use Manual

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Hardware Preparation and Installation
1
SRAM Backup Power Source (J14)
Header J14 determines the source for onboard static RAM backup power.
The MVME162P2 is factory-configured to use 5V standby
voltage as a backup power source for the SRAM (i.e., jumpers are installed
across pins 1-3 and 2-4). To select the onboard battery as the backup
power source, install the jumpers across pins 3-5 and 4-6.
Note For MVME162P2s without the optional VMEbus interface (i.e.,
without the VMEchip2 ASIC), you must select the onboard
battery as the backup power source.
!
Caution
Removing all jumpers may temporarily disable the SRAM. Do not remove
all jumpers from J14, except for storage.
J14
(Factory configuration)
6
2
J14
Backup Power Disabled
Primary Source Onboard Battery
5
1
6
2
5
1
J14
6
2
5
1
J14
6
2
5
1
J14
6
2
5
1
Secondary Source Onboard Battery
Primary Source 5V STBY
Secondary Source 5V STBY
Primary Source 5V STBY
Secondary Source Onboard Battery
Primary Source Onboard Battery
Secondary Source 5V STBY
(For storage only)