Motorola MVME162P-242, Installation And Use Manual

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Functional Description
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To remove the battery from the module, carefully pry the battery from its
socket.
Before installing a new battery, ensure that the battery pins are clean. Note
the battery polarity and press the battery into the socket. When the battery
is in the socket, no soldering is required.
EPROM and Flash Memory
The MVME162P2 implementation includes 1MB or 2MB Flash memory.
Flash memory is a single Intel device (28F016SA on the MVME162P2)
organized in a 1MB x 8 or 2Mb x 8 configuration. For information on
programming Flash, refer to the Intel documents listed under
Manufacturer’s Documents in the Related Documentation appendix.
The Flash write enable signal is controlled by:
❏
A bit in the Flash Access Time Control register in the Petra ASIC
❏
A board-level configuration jumper (J16) and configuration switch
(S5, segment 4) which determine the status of Flash write protection
on the board
Refer to the MVME1X2P2 VME Embedded Controller Programmer’s
Reference Guide for specifics.
The EPROM locations are standard JEDEC 32-pin PLCC sockets that
accommodate three jumper-selectable densities (256 Kb x 8; 512 Kb x 8,
the factory default; 1 Mb x 8). The setting of a configuration switch (line
GPI3, segment 5 on S4), allows reset code to be fetched either from Flash
memory (S4 segment 5 set to
OFF
) or from EPROMs (S4 segment 5 set to
ON
).
Note that MVME162P2 models ordered without the VMEbus interface are
shipped with Flash memory blank (the factory uses the VMEbus to
program the Flash memory with debugger code). To use the debugger
firmware, be sure that configuration switch S4 is set for the EPROM
memory map. Refer to chapters 1 and 3 for further details.