Si3454-KIT
Confidential Rev. 0.1
11
2. Enable the 2 event classification by checking the "2 event class. enable" check box.
3. Watch for a successful 2 event classification by checking the state of the “2-event class.” LED
4. Once the classification is successful, set the Ilim to 850 mA
5. Set the proper Icut limit (see below) according to the available power
6. Turn on the port using the “On” pushbutton.
If “Low priority” is checked, the port immediately removes power if the “Shutdown low priority ports” button is
clicked. If “Legacy enable” is checked, then the port supplies power to a legacy powered device even though the
powered device does not provide a valid detection resistance. The “Legacy enable” check box supports
compatibility with certain older PD devices. Please consult the Si3454 data sheet for details. Checking “Midspan
backoff” allows selection of midspan type Alternative B detection back-off timing.
The user may configure a port's Icut level with the “Icut (mA)” drop-down box. The port automatically removes
power if the port current is greater than the Icut level for more than 60 ms.
5.5.3. Port Control
A port box contains three buttons for controlling a port. The “On” button forces a port to supply power; the “Off”
button forces a port to remove power, and the “Reset” button resets a port. Detect and Class buttons force a single
detection or classification operation.
5.6. Interrupts and Events
The Si3454 detects multiple events based on state of the device in general and its ports. Events may be
configured to generate interrupts. The GUI displays events, allows individual interrupts to be enabled and disabled,
and displays the status of interrupts.
5.6.1. Interrupt Enable
The Interrupt Enable box shown in Figure 13 specifies which events cause the Si3454 to generate an interrupt.
If the interrupt line is active, the Interrupt Line Active bar at the bottom of the Interrupts box is bright red instead of
dark red. Note that if there are multiple Si3454 controllers in the system, one or more of these controllers may be
pulling the interrupt line low. It may not be the currently-selected Si3454 that is making the interrupt line active.
Summary of Contents for Si3454-KIT
Page 22: ...Si3454 KIT 22 Confidential Rev 0 1 Figure 21 Evaluation Board Top Side ...
Page 23: ...Si3454 KIT Confidential Rev 0 1 23 Figure 22 Evaluation Board Ground Layer ...
Page 24: ...Si3454 KIT 24 Confidential Rev 0 1 Figure 23 Evaluation Board Power Layer ...
Page 25: ...Si3454 KIT Confidential Rev 0 1 25 Figure 24 Evaluation Board Bottom Side ...
Page 35: ...Si3454 KIT Confidential Rev 0 1 35 Figure 32 Connector Board Bottom Side ...
