SI3482-A01-GM Silicon Laboratories Inc, SI3482-A01-GM Datasheet - Page 24

• Manufacturer Part Number: SI3482-A01-GM
• Description: IC CTLR POE 24-48PORT PSE 24-QFN
• Manufacturer: Silicon Laboratories Inc

Specifications of SI3482-A01-GM

• Applications: Power Over Ethernet Controller
• Current - Supply: 12.1mA
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-WFQFN Exposed Pad
• Product: Power Distribution
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Si3482
4.6.5. SetOverloadLimit
Set the maximum system overload that the power supplies can tolerate.
Prototype:
Parameters:
Return Value:
The overload limit is the maximum system overload that the power supplies can tolerate. It is expressed as a
percentage of the total power provided. If a system overload is less than the overload limit, the ports are turned off
one at a time. If a system overload is greater than the overload limit (severe overload), all of the low-priority ports
are immediately turned off.
4.6.6. GetOverloadLimit
Get the maximum system overload that the power supplies can tolerate.
Prototype:
Parameters:
Return Value:
4.6.7. SetGrantingPolicy
Set the granting policy.
Prototype:
Parameters:
Return Value:
Table 15 lists the Granting Policy values.
The granting policy is used by the Power Manager when deciding if a request for power should be granted. If the
granting policy is grant based, the remaining power is considered to be the total ungranted power. If the granting
policy is consumption-based, the remaining power is considered to be the total unconsumed power (excluding the
reserved power). If the remaining power is greater than or equal to the requested power, then the Power Manager
grants the request.
Grant based:
Consumption based:
4.6.8. GetGrantingPolicy
Get the granting policy.
Prototype:
Parameters:
Return Value:
24
Consumption-based
Granting Policy
INT8 SetOverloadLimit ( INT8 Limit )
Limit
Zero (for success) or an error code.
INT8 GetOverloadLimit ( void )
None
Overload limit as a percentage of the total power provided or an error code.
INT8 SetGrantingPolicy ( INT8 GrantingPolicy )
GrantingPolicy
Zero (for success) or an error code.
INT8 GetGrantingPolicy ( void )
None
The granting policy value.
Grant-based
PowerRemaining = TotalPowerProvided – TotalPowerGranted
PowerRemaining = TotalPowerProvided – TotalPowerConsumed –
ReservedPower
Overload limit as a percentage of the total power provided.
Table 15. Granting Policy Values
How requests for power are granted.
Value
0
1
Rev. 0.1
GRANT_POLICY_CONSUMPTION_BASED
GRANT_POLICY_GRANT_BASED
Symbol