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It is expected that the customer will buy the Multiprotocol Interconnect module
pre-configured with I/O cards, including proper programming for EEPROM, and
will leave the I/O card configuration, as is, for extended periods of time. It is
when the user decides to alter the I/O configuration that the information in the
EEPROM needs to be changed to reflect the power requirements of the new
configuration. To change the programmed EEPROM I/O requirements, you must
do the following:
1. Determine the total power requirements of the module using the information
provided in Table 37 on page 242.
2. Establish that there is sufficient power in the hub using the following DMM
command:
SHOW POWER BUDGET
Note that because the 8260 measures the amount of power required by each
I/O card in units, you must convert the watts available for each voltage type
to units, using the conversion factor for each voltage type as shown in
Table 38.
3. Put DMM in Maintenance mode using the following DMM command:
MAINTAIN
4. While in Maintenance mode, enter the following command:
SET POWER MODULE {slot.subslot} POWER_REQUIREMENT
5. You will be prompted to enter the following:
Enter +5V power requirements in units of 1 Watt:
Enter -5V power requirements in units of .25 Watt:
Enter +12V power requirements in units of .5 Watt:
Enter -12V power requirements in units of .25 Watt:
Enter +2V power requirements in units of .1 Watt:
Note that you must enter the above prompts in units.
6. Enter the response to the above prompts using Table 37 on page 242.
7. You will be prompted with the following:
Table 37 (Page 2 of 2). Power Requirements for Interconnect Module IP Cards
I/O Cards
Total Power Requirements (in Units)
+2V +5V -5V +12V -12V
10Base-5 - 9 - 8 -
10Base-2 - 8 - 3 -
10Base-T - 7 - - -
Token-Ring - 9 - - 1
Table 38. Watts to Units Conversion Table
Voltage Type Watts to Units Conversion
+5V 1 Watt = 1 Unit
-5V .25 Watt = 1 Unit
+12V .5 Watt = 1 Unit
-12V .25 Watt = 1 Unit
+2V .1 Watt = 1 Unit
Chapter 11. 8260 Multiprotocol Interconnect Module 243