Indicators and Connections

LEDs and Connections

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LED Name

Color

Description

Downstream Boost

Yellow

Indicated the Downstream Data Boost is enabled through the USB Entity API

Power

Red

Shows that a 3.3V voltage regulation system is up and running properly.

Upstream Boost

Yellow

Indicated the Upstream Data Boost is enabled through the USB Entity API

Heartbeat

Green

Communication is occurring with the BrainStem module

Watchdog

Blue

Indication the internal watchdog is running and the connection with the Host is healthy

BrainStem Link

Yellow

The BrainStem USB interface is created on a host computer

User LED

Blue

A software controllable indicator accessed via the System BrainStem Entity. See the System Entity API Reference Page.

USB Channel 0:3 Status

Green

Indicates whether the downstream device has enumerated on the host computer

USB Channel 0:3 Power

Red

Indicates an error on USB power (Vbus) such as overcurrent

Hub Status

Red

The USB hub communicates with a host computer.

USB Upstream Channel 0

Yellow

Indicated Upstream 0 has been selected

USB Upstream Channel 1

Yellow

Indicated Upstream 1 has been selected