I think the answers to 1, 2, and 3 have all been asked and answered before on this email reflector. A little bit of searching for appropriate keywords will get you the answers to those.
For number 4, you are confusing survival (non-operating) with operating conditions. Read the footnotes to the "Absolute Maximum Ratings" chart. they are important. If you go outside of the "Recommended Operating Conditions" chart supply voltages of 4.3 to 5.8 Volts, the TPS65217C goes into an emergency shutdown to protect itself and the CPU. So if you want to run from 10 to 15 Volts power, you will need an external buck-converter or other step down power supply ahead of the TPS65217 to feed it 5 Volts. --- Graham == On Thursday, January 31, 2019 at 12:32:55 PM UTC-6, omair...@saikosystems.com wrote: > > > Hello Everyone, > > I tried to post this yesterday and got a brief "Your discussion has been > posted" message, but then later could not find the post, so sorry if it > gets double posted. > > I'm looking into creating a custom board for a client based on the > BeagleBoard Black and had a few questions. I will be creating the hardware > design and the client will handle all the software requirements. Almost the > whole BBB will get replicated, with the exception of the HDMI and perhaps > the Ethernet (both of which are not used in their application). Some of > these questions are geared towards software, but I want to make sure that > all the bases are covered and I can point the clients down the correct path > in bringing up the new board. Any feedback from those who have endeavored > on this path before is greatly appreciated. > > > 1. I understand the BeagleBoards come pre-programmed with a Linux > kernel and U-Boot, however, new chips we purchase from the factory will be > black. What is the method for first programming of the blank chips? Can it > be done via the USB Client port or MicroSD? > > 2. I understand there's an EEPROM on board that contains board > identification information, which is used by the Kernel and U-Boot to > setup > and boot the board correctly. What areas need to be modified to bring up a > board that does not contain the EEPROM, or contains a blank EEPROM? > > 3. The SRM mentioned that some of the TPS65217C power rails had been > modified to 1.5V instead of 1.8V. Where is this set? I'm guessing this is > done in software and somewhat related to question 2. > > 4. The device needs to be powered by an unregulated 12v supply and be > able to withstand 10v - 14.5v. The TPS65217C datasheet indicates it can > support a supply voltage range of -0.3V to 20V, however, the recommended > operating supply voltage is 4.3V - 5.8V. Has anyone used the chip outside > of the recommended supply voltage, and were there any issues? > > > Thank you in advance for any feedback. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/d8a017f0-dc5b-4337-a129-ae420412fe78%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
