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Anyone know of a USB cable that enumerates (to draw full power from the port)? I've heard of programmable chips from companies such as FTDI which I guess would be possible to use in this case (although I'm not sure exactly what I need quite yet), but I'd like to keep it as simple as possible and keep things in spec.

I know you can 'cheat' the port and draw over the spec of 100mA (without enumerating). Hell, I've been doing this for years now with a device I'm that I am getting to the final stages to put on the market. There are plenty of other devise out there; like chargers, coffee cup warmers, toys, ect... that draw >100mA as well. But as of right now I don't want to be one of those that don't follow the rules and abuse the standard. There is some good reading here on MaximIntegrated.

I am looking to sell a USB powered device that requires around 185mA of power and don't want to take any chances with someone else's hardware and want to be certain my device works on any powered port, USB 2.0 or 3.0.


I've redesigned a few aspects and got things down to <100mA, so I should be fine now. But if anyone knows a good place for a chip to control the power from the hub, i'm still interested!
Edited by frag85 - 11/16/13 at 11:12pm
 
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x58
(12 items)
 
 
CPUMotherboardGraphicsGraphics
3570k 4.6@1.35v Gigabyte Z77x-UD3H CF 7970 (reference) 7970 
RAMHard DriveCoolingMonitor
G.Skill F3-1866C10-8GAB Intel 520 Noctua NH-U12P 3x BenQ GW2450 
KeyboardPowerCaseAudio
WASD V2 Corsair 850 Antec 300 ATH-AD700 
CPUMotherboardGraphicsGraphics
I7 920 DO 3903A468 4.4@1.28v Gigabyte EX58-UD4P EVGA GTX275 MIS GTX275 
RAMHard DrivePower
3x2GB OCZG1600LV2G WD Raptors/WD Black 1TBs OCZ ModXStreme 700 
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