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2.11.2 Power Supply Considerations
System integrators should refer to the power usage values listed in when selecting a power supply
for use with this motherboard. The power supply must comply with the following
recommendations found in the indicated sections of the ATX form factor specification
(see Section 1.3).
•
The potential relation between 3.3 VDC and +5 VDC power rails (Section 4.2)
•
The current capability of the +5 VSB line (Section 4.2.1.2)
•
All timing parameters (Section 4.2.1.3)
•
All voltage tolerances (Section 4.2.2)
2.11.3 Standby Current Requirements
The +5 V standby current consumed by the YA810E desktop board is 0.182 A. This does not
include external peripherals.
NOTE
These standby current requirements are system configuration dependent.
2.11.4 Fan Power Requirements
Table 41 lists the maximum DC voltage and current requirements for the fans when the board is in
sleep mode or normal operating mode. Power consumption is independent of the operating system
used and other variables.
Table 41.
Fan DC Power Requirements
Fan Type
Chassis (J6A1)
Processor (J7J1)
For information about
The location of the fan connectors
The signal names of the chassis fan connector
The signal names of the processor fan connector
Mode
Voltage
Sleep
+ 6.9 VDC
Normal
+ 12 VDC
Sleep
+ 12 VDC
Normal
+ 12 VDC
Technical Reference
Maximum Current (Amps)
0.250 mA (current limited)
0.210 mA (current limited)
0.137 mA (current limited)
0.137 mA (current limited)
Refer to
Figure 7, page 50
Table 33, page 53
Table 27, page 51
63
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