The beaglebone black is the newest member of the beagleboard family. It is a lower-cost, high-expansion focused beagleboard using a low cost sitara XAM3359AZCZ100 cortex A8 ARM processor from texas instruments.Cognitive learning theory in the classroom it is similar to the beaglebone,but with some features removed and some features added. The table below gives the high points on the differences between the beaglebone and beaglebone black.Cognitive learning theory in the classroom

You may use the beaglebone black design materials as you choose. There are no licences involved in the usage of the beaglebone black design materials.Cognitive learning theory in the classroom we do not encourage the use of the board that we manufacture under the beagleboard.Org logo in commercial products. We are not able to schedule parts and arrange for production for orders that we cannot see.Cognitive learning theory in the classroom meeting demand is difficult as a result.

4) removed R9 and installed R8. This change was based on an alert we just received from TI that there is a power sequencing issue with the TPS65217C power management IC and the power sequencing is incorrect.Cognitive learning theory in the classroom this change connects the VDDS rail to the VRTC rail. We do not believe at this time, that the issue is causing any issues with the boards, but we want to comply with the directive.Cognitive learning theory in the classroom

4) PCB change...Added a power button which allows for wake up, power down, and sleep options. It also provides the ability to alert the processor before powering down to provide an orderly shutdown.Cognitive learning theory in the classroom it is expected that SW will be used in conjunction with the switch to control the various power modes and transitions from one to the other.Cognitive learning theory in the classroom by holding the button down for 8 seconds, it will force a power down of the board.

We have been noticing a very small number of boards that are experiencing power issues, where the LED flashes and the board does not power up.Cognitive learning theory in the classroom we have been chasing this for a while now and due to the small number of boards that have the issue and the fact that the issue can also be caused by having things connected to IO pins not powered correctly, it has been hard to nail down.Cognitive learning theory in the classroom our initial take was that it was a manufacturing issue on some boards, but we could never prove that. Based on the latest information we have gathered, this appears to be an instance where the PMIC does not power down the processor in the right order due to the violent removal of the power cables, either USB or DC.Cognitive learning theory in the classroom so, we are recommending that the power button be used to power off the board or by issuing the halt command. After that you can remove the power cable.Cognitive learning theory in the classroom if everyone follows this process, we should see a decrease in these issues, but it will take a while for the results, either good or bad, to show up.Cognitive learning theory in the classroom this will also help prevent the contamination of the emmc and the SD cards by allowing the kernel to shutdown properly before power is removed.Cognitive learning theory in the classroom

Another issue that we have seen is that the power supply when plugged in will create a spike that exceeds the voltage rating of the PMIC or will cause the voltage to drop momentarily.Cognitive learning theory in the classroom this can occur after power up cycle has started. When this occurs, the PMIC will shutdown. This can cause the processor to be powered down before it is powered all the way up, damaging the processor.Cognitive learning theory in the classroom it is suggested that to prevent this that you use a well regulated power supply that can handle the current surge of the powering up process.Cognitive learning theory in the classroom

The links below are static links that always point to the latest version of the listed documents. These links can be used by distributors or users to point to the latest documentation.Cognitive learning theory in the classroom as documents are updated, the links will remain the same, but the actual file will be updated. This insures that you always have the latest documents and your links will always work.Cognitive learning theory in the classroom