Download Emerson MVME51005E Technical data

5
RAM500 Memory Expansion Module
5
Overview
The RAM500 memory expansion module can be used on the MVME5100 as an option for
additional memory capability. Each expansion module is a single bank of SDRAM with either
256 or 512MB of available ECC memory. Currently, two expansion modules can be used in
tandum to produce an additional expanded memory capability of 1GB. There are two
configurations of the board to accommodate tandum usage. The bottom expansion module has
both a bottom and top connector: one to plug into the base board, and one to mate with the
second RAM500 module. The top expansion module is designed with just a bottom connector
to plug into the lower RAM500 module. The RAM500 incorporates a Serial ROM for system
memory Serial Presence Detect (SPD) data.
A maximum of two expansion modules are allowed: one bottom and one top. If only one module
is used, the RAM500 module with the top configuration is recommended.
Features
The following table lists the features of the RAM500 memory expansion module:
Table 5-1. RAM500 Feature Summary
Form Factor
Dual sided mezzanine, with screw/post attachment to host board
SROM
Single 256x8 I2C SROM for Serial Presence Detect Data
SDRAM
Double-Bit-Error detect, Single-Bit-Error correct across 72 bits
128, 256, or 512MB mezzanine memory @ 100MHz
Memory Expansion
Flexibility
Any RAM500 memory size can be attached to the host board
followed by any secondary RAM500 memory size for maximum
memory expansion flexibility.
Functional Description
The following sections describe the physical and electrical structure of the RAM500 memory
expansion module.
MVME51005E Single Board Computer Installation and Use (6806800A38B)
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