Your first connection does not work, because you are trying to power the 
USB1 from the USB_VIN, but since the is no power going into USB_VIN on 
USB-0, there is no power to come out USB-1.
This only works when the board is powered from USB-0
The schematic does not tell you, but USB_VIN, USB0_VIN and USB1_VIN are all 
connected together.

VIN is a totally separate power supply input

Since you are powering the board from VIN (P1-01) you need to hook the 5V 
line on your Micro-USB board to P1-01 and P1-05.

In this case, it will work, although you have no current limit protection 
from a short on the 5V line in a downstream USB device, which is required 
by the USB spec.
So, only plug in USB devices and cables you trust.

I would not power the USB-5V-VBUS from the SYS-VOUT, because SYS-VOUT is 
limited to 0.2 A or so, and many USB devices draw more current than this 
(USB-2 devices are allowed to draw up to 0.9 A)

--- Graham

==

On Thursday, November 16, 2017 at 5:11:52 PM UTC-6, [email protected] 
wrote:
>
> I, too, am wondering about the best way to provide power to the board and 
> to a device connected to USB1 as host. Here is how I learned to hook up a 
> micro-b breakout to USB1 and also how I intend to provide power to the 
> board. The problem is that there is no measured voltage at USB1:
>
>
> <https://lh3.googleusercontent.com/-XyHjxbobnnY/Wg3xGzyvNcI/AAAAAAAAATo/u1ufBwtum9c4KA6T6zjnu38x4cwwQ3TNQCLcBGAs/s1600/PocketBeagle_microUSB_1.png>
>
> I was wondering if I could just power the USB1 device from P1_24 SYS VOUT 
> (which does have power when board is supplied by P1_01 SYS VIN) like this:
>
>
> <https://lh3.googleusercontent.com/-l4RYr7WmaGU/Wg3xqYECajI/AAAAAAAAATw/ipK3CZmhG18cieC-bnMLV04PfPBl_hRRACLcBGAs/s1600/PocketBeagle_microUSB_2.png>
> Would it be harmful to do it this way? Are there better ways to accomplish 
> this? Thanks!
>
> -- Will Bain
>
>
> On Sunday, November 5, 2017 at 6:59:39 PM UTC-7, Graham wrote:
>>
>> Further research, looking at the Eagle board and schematic files for the 
>> PB, it appears that USB0.VIN and USB1.VIN are both directly connected to 
>> VIN.USB
>> Which explains why I had no power on my USB1 host port when connected 
>> like the Fritzing diagram, since I am powering from VIN currently.
>>
>> So the question becomes,,,
>> What is the best way to power USB1 VBUS as a host if I don't know in 
>> advance whether the customer application will run from VIN or VIN.USB?
>>
>> --- Graham
>>
>> ==
>>
>> On Sunday, November 5, 2017 at 6:58:06 PM UTC-6, Graham wrote:
>>>
>>> I note that there is a PocketBeagle pin P1-7 named USB1-VIN.
>>>
>>> I don't find any connection on the PB schematic, other than to P1-7.
>>>
>>> It was connected externally in all of the USB1 host discussions and 
>>> Fritzing diagrams.
>>>
>>> The name would imply that it is a way to deliver power to the board when 
>>> USB1 has an external 5 Volt power source.
>>>
>>> I guess the basic question is whether this needs to be used/connected 
>>> when USB1 is functioning as a host.
>>>
>>> --- Graham
>>>
>>> ==
>>>
>>

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