SI3480-A01-GM Silicon Laboratories Inc, SI3480-A01-GM Datasheet - Page 8

• Manufacturer Part Number: SI3480-A01-GM
• Description: IC CTLR 4/8-PORT POE 20-QFN
• Manufacturer: Silicon Laboratories Inc

Specifications of SI3480-A01-GM

• Applications: Power Over Ethernet Controller
• Current - Supply: 13mA
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-VFQFN Exposed Pad
• Product: Power Distribution
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Si3480
5. Pin Descriptions
8
Pin #
10
12
13
14
15
16
17
18
19
20
11
1
2
3
4
5
6
7
8
9
LEDBANK
Pin Name
PRIOCFG
PWRCFG
POECFG
ALTCFG
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED8
GND
SDA
VDD
RST
SCL
INT
NC
Open Collector Connect to Si3452 SDA and pull-up resistor.
Open Collector Connect to Si3452 SCL and pull up resistor.
Pin Type
Output
Output
Output
Output
Output
Output
Output
Output
Output
Power
Power
Input
Input
Input
Input
Input
Input
NC
Table 6. Si3480 Pin Descriptions
GND
VDD
SDA
RST
NC
Ground.
VDD.
Reset (a low will reset the Si3480).
Do not connect to this pin.
Pins LED1–LED4 work with Pin LEDBANK to drive the eight power
meter LEDs.
Pins LED5 – LED8 work with Pin LEDBANK to drive the eight port status
LEDs.
Low is Alternative A timing, High is Alternative B timing. See "3.1.4. Pin
ALTCFG" on page 6.
This pin sets the number of ports that are high priority. See "3.1.3. Pin
PRIOCFG" on page 6.
The pin sets the number of ports that are high power. See "3.1.2. Pin
POECFG" on page 6.
This pin sets the power provided. See "3.1.1. Pin PWRCFG" on page 6.
This pin determines which LED bank is being turned on.
Connect to Si3452 INT and pull up resistor.
1
2
3
4
5
Rev. 1.0
15
14
13
12
11
ALTCFG
PRIOCFG
LED8
LED7
LED6
Pin Function