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Signal Descriptions
5.1.3 PM1 to PM4—Motherboard Connectors
These connectors, which connect to their mates on the motherboard, are 140-pin
interboard, male connectors manufactured by Molex. These connectors are arranged in a
square shape so that there is a short route to the PCB. As shown in Figure 5-1, the
connectors are set asymmetrically to prevent incorrect daughterboard insertion.
PM1
1
1
46.3mm
PM2
PM3
PM4
30.19mm
17.49mm
93.98mm
Figure 5-1. Motherboard Connectors Mechanical Assembly (Top Side)
MOTOROLA
MPC821FADS-DB USER'S MANUAL
5-11
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