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USB hard drive
pfeerick
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#17
11-29-2016, 12:50 AM
(11-28-2016, 12:54 PM)StefanB Wrote: USB current is not limited by the AXP PMIC, but by dedicated current limiters. The jumper does not have any effect on these.

My apologies... StefanB is indeed correct. Unlike the PMIC on the Chip, the pine64 has dedicated current limiters (LPW5210) on each port, which appear from the schematic to be set to 0.68A. Why the external drive I tried when responding to the earlier did work with the jumper in the DC position, but not in the BAT position I can't explain (other than too much voltage sag since the input power was 5.2v, but the on-board stepped up power is probably just under 5.0v?).
pine64 wiki, linux-sunxi Pine64 wiki, the board/connector layout & pinout of the Raspberry Pi/Euler/EXP connectors
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Messages In This Thread
USB hard drive - by piner64 - 07-21-2016, 01:37 AM
RE: USB hard drive - by MarkHaysHarris777 - 07-21-2016, 01:41 AM
RE: USB hard drive - by piner64 - 07-21-2016, 02:14 AM
RE: USB hard drive - by MarkHaysHarris777 - 07-21-2016, 05:34 AM
USB hard drive - by SkimMilk - 07-21-2016, 09:08 AM
RE: USB hard drive - by tllim - 07-21-2016, 01:38 PM
RE: USB hard drive - by MarkHaysHarris777 - 07-21-2016, 10:44 PM
RE: USB hard drive - by SkimMilk - 07-21-2016, 11:57 PM
RE: USB hard drive - by gbjensen - 07-22-2016, 01:21 AM
RE: USB hard drive - by montero65 - 07-22-2016, 06:30 AM
USB hard drive - by SkimMilk - 07-22-2016, 09:34 AM
RE: USB hard drive - by xalius - 07-22-2016, 04:54 PM
RE: USB hard drive - by g_t_j - 10-07-2016, 01:21 PM
RE: USB hard drive - by pfeerick - 10-07-2016, 07:22 PM
RE: USB hard drive - by g_t_j - 10-10-2016, 02:10 PM
RE: USB hard drive - by StefanB - 11-28-2016, 12:54 PM
RE: USB hard drive - by pfeerick - 11-29-2016, 12:50 AM

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