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EPC-3221 CompactPCI
System Controller Board and C1XTN02 Transition I/O Module
®
Installing Memory
Overview
The EPC-3221 contains two 168-pin DIMM (Dual In-Line Memory Module) sockets for
memory
(Figure
PC100 DIMMs, or higher as technology becomes available.
Memory Banks
Any of the DIMM sockets can be filled in any order with modules of any acceptable size. For
example, a 16 MB DIMM can be installed in Bank 0, while a 32 MB DIMM can be installed in
Bank 1.
DIMM Types
Five DIMM memory sizes (16, 32, 64, 128, and 256 MB) are supported. DIMMs of these sizes
can be installed in banks 0 and 1 in any combination and in any order.
Memory size is detected by the system BIOS. Memory timing requires PC100 SDRAM
modules.
DIMM Installation
To install a DIMM (see
1. Power-off the system and disconnect all power cords.
Note: Use a grounding wrist strap or other static-dissipating device when accessing and
handling the equipment.
2. Depress the DIMM socket latches outward (if required).
3. Align the DIMM with the socket.
Note: The DIMM and socket are both keyed to prevent improper installation.
4. Insert the DIMM into the socket. Carefully push the DIMM into the socket.
Note: The DIMM socket latches will rotate upward to engage the DIMM.
DIMM Removal
To remove a DIMM:
1. Power-off the system and disconnect all power cords.
Note: Use a grounding wrist strap or other static-dissipating device when accessing and
handling the equipment.
2. Depress the DIMM socket latches outward.
Note: The DIMM will be ejected from the socket.
44
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14). This provides support for up to 512 MB of on-board memory using
The system can operate without Bank 0 (DIMM 1) filled. However, Crisis Recovery mode
requires Bank 0 to be populated. For more information on Crisis Recovery mode, see
and
page
13.
The SCB only supports +3.3 V DIMMs. Use of DIMMs that are not rated at +3.3 V can cause
damage to the equipment and will void the warranty.
Figure 14
and
Figure
15):
page 12
Service Manual
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