Silicon Laboratories Si3454-KIT, User Manual

Page: 10 / 40

S i 3 4 5 4 - K I T
10 Confidential Rev. 0.1
5.4. Device Information
The Device Information box displays high-level information about the Si3454 device, including hardware revision
and the firmware version.
Note: The example shown in Figure 11 is representative but may not contain the same data as that displayed with your board.
Figure 11. Device Information Box
5.5. Port Boxes
The port boxes display port status and have controls for configuring and controlling the ports. Each port has its own
box.
Figure 12. Port Box
5.5.1. Port Status
A port box displays the results of the last detection and last classification in the lower left. If not polling, the user
may manually update the port detect and classify status by clicking on the “R” (read) button.
Port voltage and current are displayed in the port box upper right corner. If polling is not enabled, then the user may
manually update the port voltage and current reading by clicking on the “Refresh” button.
5.5.2. Port Configuration
A port box contains four radio buttons to configure the mode of the port. The port mode may be Shutdown, Manual,
Semi-auto, or Auto.
The port features can be configured with the four checkboxes on the right pane. If “Disconnect enable” is checked,
the port removes power if the powered device is unplugged. If the “2 event class. enable” is checked, then the
Si3454 will follow the IEEE802.3at Type 2 (2-event) classification method for PDs presenting Class 4 signature
during the first event. The “2-event class” LED is lit when the Type 2 classification is successful.
The “Type2Fault” provides additional status information about the classification. The “FET Bad” LED is lit when the
external FET is damaged.
The following steps detail how a port can be manually turned on in the IEEE 802.3at Type 2 high-power manner
(see Figure 16 on page 16):
1. Enable detection and classification by checking the “Detect enable” and “Class enable” check-boxes.