SI3482-A01-GM Silicon Laboratories Inc, SI3482-A01-GM Datasheet - Page 21

• 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

Table 13 lists the Port Priority Status values.
The priority status of a port is the currently-active priority and may be different than the configured priority of the
port. If a port is forced on or off and the configured priority is low or high, the priority status is elevated to the forced
priority. If a forced port is returned to automatic control, the Power Manager returns the priority status to the
configured priority.
4.3.5. GetPortPowerConsumed
Get the power that a PD is currently using.
Prototype:
Parameters:
Return Value:
4.3.6. GetPortPowerGranted
Get the power that is allocated to a PD.
Prototype:
Parameters:
Return Value:
4.3.7. GetPortPowerRequested
Get the power that a PD says it needs.
Prototype:
Parameters:
Return Value:
4.3.8. GetPortPowerAvailable
Get the maximum request that would be successfully granted.
Prototype:
Parameters:
Return Value:
An LLDP agent calls this routine to ask the question, “What is the maximum power that you would give me if I
asked for it?”
If a port has a power limit, then the power limit is returned. If a port does not have a power limit and the port can
supply high power, then maximum power (40 W) is returned; otherwise, low power (15.4 W) is returned.
Port Priority Status
INT32 GetPortPowerGranted ( UINT8 Port )
Port
Port power granted in milliwatts or an error code.
INT32 GetPortPowerRequested ( UINT8 Port )
Port
Port power requested in milliwatts or an error code.
INT32 GetPortPowerAvailable ( UINT8 Port )
Port
Port power available in milliwatts or an error code.
INT32 GetPortPowerConsumed ( UINT8 Port )
Port
Port power consumed in milliwatts or an error code.
Forced
Critical
High
Low
The port number (1–48)
The port number (1–48)
The port number (1–48)
The port number (1–48)
Table 13. Port Priority Status Values
Rev. 0.1
Value
0
1
2
3
PRIORITY_CRITICAL
PRIORITY_FORCED
PRIORITY_HIGH
PRIORITY_LOW
Symbol
Si3482
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