Sram Backup Power Source (J9) - Motorola MVME167P Installation And Use Manual

Hardware Preparation and Installation
1

SRAM Backup Power Source (J9)

1-8
Header J9 determines the source for onboard static RAM backup power on
MVME167P boards if equipped with battery backup. In the factory
configuration, VMEbus +5V standby voltage serves as primary and
secondary power source (the onboard battery is disconnected). The backup
power configurations available for onboard SRAM through header J9 are
illustrated in the following diagram.
J9
2
1
Primary VMEbus +5V STBY
Secondary VMEbus +5V STBY
(Factory Configuration)
J9
2
1
Primary VMEbus +5V STBY
Secondary Onboard Battery
6 2
5
1
Primary Onboard Battery
Secondary Onboard Battery
6 2
5
1
Primary Onboard Battery
Secondary VMEbus +5V STBY
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J9
6
5
J9
6
5