SI3453C-B01-GM Silicon Laboratories Inc, SI3453C-B01-GM Datasheet - Page 16

• Manufacturer Part Number: SI3453C-B01-GM
• Description: IC POE CONTROLLER MIDSPAN 40QFN
• Manufacturer: Silicon Laboratories Inc

Specifications of SI3453C-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: 336-1840-5

Si3452/3
4.8.1. Address Pins
Pins with the same name must be externally connected and then tied high or low via a weak (10 k) pull up or pull
down to establish the device address at power up. The Si3452/3 powers up in either Auto mode or Shutdown mode
depending on the ordering part number. For more information, see "11. Ordering Guide" on page 32.
4.8.2. Address Format
The address byte of the I



The device will also respond to the global address 0x30
Table 15 lists the valid device addresses:
16
Bit[0]
Bit[1..4]
Bit[5..7]
R/W bit (0 = write, 1 = read)
the Si3452/3 address
010b
2
C communication protocol has the following format:
AD3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Table 14. Address Pin Assignment
AD2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Table 15. Address Selection
Pin #
21
24
25
26
27
28
34
36
AD1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Rev. 0.42
AD0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Pin Name
AD3
AD3
AD2
AD2
AD1
AD0
AD0
AD1
Address
0x2A
0x2B
0x2C
0x2D
0x2E
0x20
0x21
0x24
0x25
0x28
0x29
0x2F
—
—
—
—
Valid
N
N
N
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y