SI3453A-B01-GM Silicon Laboratories Inc, SI3453A-B01-GM Datasheet - Page 23

• Manufacturer Part Number: SI3453A-B01-GM
• Description: IC POE CONTROLLER MIDSPAN 40QFN
• Manufacturer: Silicon Laboratories Inc

Specifications of SI3453A-B01-GM

• Package / Case: 40-QFN
• Controller Type: Power over Ethernet Controller (POE)
• Interface: I²C
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 14mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Maximum Power Dissipation: 1.2 W
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Product: Ethernet Controllers
• Standard Supported: IEEE 802.3at, IEEE 802.3af
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Supply Current (max): 14 mA
• Maximum Operating Temperature: + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 336-1838-5

0 or 1 don’t care
0 or 1 don’t care
0 or 1 don’t care
0
1
*Note: During initial port turn-on (T
Power on port
Power off port
Reset port
Toggle detection
back-off timing
Reset chip
Get V
Read port current
*Note: This command toggles bit 0 or Register 0x10. When bit zero is set, the detection back-off of 2 seconds is implemented
Command
EE
(alternative B or “midspan” mode).
PoE+ bit
*
Command
Codes
0x01
0x02
0x03
0x04
0x05
0x06
0x07
Class
0/3
START
1
2
4
4
Table 22. Si3452/3 Port Configuration
0x0C | port no
0x1C | port no
0x04 | port no
0x08 | port no
Table 23. Si3452/3 Command Codes
Register
time of 60 msec), the current limit is set to 425 mA, even in PoE+ mode.
CMD
0x10
0x14
0x18
Auto Mode Setting of
I
CUT
[B4..B2]
Rev. 0.42
001b
010b
100b
101b
011b
110b
111b
0xC9
0x1E
0x35
0x75
0x75
Register
[B1..B0] Command
2 bit port number
2 bit port number
2 bit port number
2 bit port number
Parameter
I
NA
NA
NA
CUT
170 mA
375 mA
375 mA
640 mA
97 mA
Nominal
Port current in 100 µA
2 Byte Return Value
V
Si3452/3
EE
Ilim Nominal*
in mV units
units
425 mA
425 mA
425 mA
425 mA
850 mA
23