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6. (Optional step) If a second RAM500 module is being used, align the top connector on
the bottom RAM500 module with the bottom connector on the top RAM500 module and
press the two connectors together until the connectors are seated in place.
7. Insert the three short Phillips screws through the holes at the corners of the RAM500
and screw them into the standoffs.
8. Turn the entire assembly over, and fasten the three nuts provided to the standoff posts
on the bottom of the MVME5100 host board.
9. Reinstall the MVME5100 assembly in its proper card slot. Be sure the host board is well
seated in the backplane connectors. Do not damage or bend connector pins.
10. Replace the chassis or system cover(s), reconnect the system to the AC or DC power
source, and turn the equipment power on.
RAM500 Connectors
RAM500 memory expansion modules are populated with one or two connectors. If the module
is to be used in tandum with a second RAM500 module, the "bottom" module will have two
connectors: one to mate with the MVME5100 host board (P1), and one to mate with the "top"
RAM500 module (J1). The "top" RAM500 module has only one connector, since it needs to
mate only with the RAM500 module directly underneath it and because an added connector on
a tandum RAM500 configuration would exceed the height limitations in some backplanes. If
only one RAM500 module is being used, a top module, single connector configuration is used.
A 4H plug and receptacle are used on both boards to provide a 4 millimeter stacking height
between dual RAM500 cards and the host board.
The following subsections specify the pin assignments for the connectors on the RAM500.
Bottom Side Memory Expansion Connector (P1)
The bottom side connector on the RAM500 is a 140-pin AMP 0.6mm Free Height mating plug.
This plug includes common ground contacts that mate with standard AMP receptacle
assemblies or AMP GIGA assemblies with ground plates. A single memory expansion module
will have 1 bank of SDRAM for a maximum of 5Mbytes of memory. Attaching a second memory
module to the first module will provide 2 banks of SDRAM with a maximum of 1Gigabytes.
Table 5-3. RAM500 Bottom Side Connector (P1)Pin Assignments
1
3
5
7
9
11
13
15
GND*
GND*
DQ00
DQ01
DQ02
DQ03
DQ04
DQ05
DQ06
DQ07
+3.3V
+3.3V
DQ08
DQ09
DQ10
DQ11
MVME51005E Single Board Computer Installation and Use (6806800A38B)
5 RAM500 Memory Expansion Module
2
4
6
8
10
12
14
16
47
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Troubleshooting
