UART0 and USB0 are the peripheral communication. The number 0 attached to the end is the peripheral number, In modern day MPUs there will be multiple communication so we have multiple UART and USB. UART-0 and USB-0 are the first devices with the same protocol. UART-0 and USB-0 are the first in the series adn are numbered as 0 accordingly.
In the beaglebone, If the eMMC and sd_card do not have bootable media, the boot proces will go to UART device number 0 to look for a bootable medium and then to USB0. for more details visit the TI wiki : http://processors.wiki.ti.com/index.php/Main_Page On Monday, February 6, 2017 at 5:39:54 PM UTC+5:30, Madhu K wrote:: All, > > > I want to understand the boot process of beaglebone black. I googled and > got an article in "Beyond logic" there is explained boot sequence as > follows. > > By default, the ROM in the Sitara AM3359 will boot from the MMC1 interface > first (the onboard eMMC), followed by MMC0 (MicroSD), UART0 and USB0. > > what does UART0 and USB0 meanig here? > > Regards, > Madhu > -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/3d00b302-bda6-4297-87d7-ba83e8c038b2%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
