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Hardware Preparation and Installation
MVME3100 Single Board Computer Installation and Use (6806800M28C)
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1.4.4 PMC I/O Voltage Configuration
The onboard PMC sites may be configured to support 3.3V or 5.0V I/O PMC modules. To
support 3.3V or 5.0V I/O PMC modules, both PMC I/O keying pins must be installed in the
holes. If both keying pins are not in the same location or if the keying pins are not installed, the
PMC sites will not function. Note that setting the PMC I/O voltage to 5.0V forces the PMC sites
to operate in PCI mode instead of PCI-X mode. The default factory configuration is for 3.3V
PMC I/O voltage.
1.4.5 RTM SEEPROM Address Switch (S1)
A 4-position SMT configuration switch is located on the RTM to set the device address of the
RTM serial EEPROM device. The switch settings are defined in the following table.
20 0 01011 ON ON OFF ON OFF OFF
21 1 01010 OFF ON OFF ON OFF ON
Table 1-4 Slot Geographical Address Settings (continued)
Slot Address GAP GA(4:0) SW3 SW4 SW5 SW6 SW7 SW8
Table 1-5 RTM EEPROM Address Switch Assignments
Position SW1 SW2 SW3 SW4
Function A0 A1 A2 Not Used
OFF 1 1 1
Table 1-6 EEPROM Address Settings
Device Address A(2:0) SW1 SW2 SW3
$A0 000 ON ON ON
$A2 001 OFF ON ON
$A4 010 ON OFF ON
$A6 011 OFF OFF ON
$A8 100 ON ON OFF
$AA (Factory) 101 OFF ON OFF