Nexcom Peak 550, User Manual

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Peak 550/PISA 550 User's Guide
Capability Expanding
3-3
3.2 The Cache Memory
The Peak 550 series only support the high speed pipeline burst SRAM. The
advanced single Chip SRAM is 32Kx64 for 256KB, or 64Kx64 for 512KB. Since
it is mounted on board, the field upgrade is not allowed.
3.3 Change CPU
The Peak 550 uses the 321 pin PGA socket rather than the ZIF socket, so it
needs force to push or pull the CPU into or out from the socket. Normally, you
have to use some tool to pull the CPU out from the socket. To put on a new
CPU, please place the new CPU on the middle of the socket, orienting its beveled
corner to line up with the socket’s beveled corner. Make sure the pins of the
CPU fit evenly to the socket openings, then press the CPU until all the pins fit
into the socket. Be sure to re -arrange the jumper setting for the correct clock
(JP19, JP22) and Core/Bus ratio (JP5,6,8). The Peak 550 support many kinds of
CPU’s, please refer to the jumper setting table for the right arrangement.