Thank you for reply.
I'm using USB2 interface for powering BBB. The codec which I mentioned is WM8731 (https://www.cirrus.com/products/wm8731/) I'm using MikroElectronika breakout board (https://www.mikroe.com/audio-codec-proto-board) 2021년 3월 22일 월요일 오전 1시 56분 1초 UTC+9에 Dennis Bieber님이 작성: > On Sun, 21 Mar 2021 07:29:27 -0700 (PDT), in > gmane.comp.hardware.beagleboard.user JeongHwan Kim > <[email protected]> wrote: > > > >I'm attaching the audio codec breakout board with BBB. > > A link to the documentation of said board would be useful -- I don't > know if there are multiple makers of boards that qualify as an "audio codec > breakout". > > >How much current is supplied with 3.3V header pin of BBB? > > How are you powering the BBB? Note that, if using the USB-2 interface, > the entire board is running from a 5V 500mA supply (if the source can > provide it). Using the barrel connector with a wall-wart supply can provide > around 2.5A. You would now have to check the documentation for the voltage > regulation chip on the BBB to find out how much gets passed through it... > > Documentation for the PMIC indicate 1.2A available output powering the > entire board. The BBB SRM shows that it has four LDOs, two at 100mA and two > at 285mA (I'd guess at least one of those is providing the 3.3V outputs on > the connectors). The spec sheet for the PMIC (-C variant) says 400mA for > the those two LDOs > > The SRM states the expansion board headers provide up to 250mA @ 3.3V > (I can't tell if that is shared by the two pins, or if each pin can supply > 250mA for a total of 500mA). The VDD 5V can provide 1A. > > This is as much research as I'm willing to put in... All the documents > are available on-line (well, maybe the PMIC is blocked depending upon one's > country -- TI is weird that way). > > > -- > Dennis L Bieber > > -- 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/59a72fc3-61a5-4d9f-98e5-8d1e000d9b1an%40googlegroups.com.
