Date: Wed, 13 Nov 2019 14:13:20 -0700 From: Ian Lepore <ian@freebsd.org> To: ticso@cicely.de Cc: freebsd-arm@freebsd.org Subject: Re: Choose between Raspberry Pi 4B 4GB and ROCKPro64 Message-ID: <505af93297a51a29681216be534c4ea917bb3d48.camel@freebsd.org> In-Reply-To: <20191113204826.GV43404@cicely7.cicely.de> References: <7b75e2ed23e334878fbb3c1d585ffc51.squirrel@10.1.1.11> <20191015220433.GS96402@funkthat.com> <20191112124539.GM43404@cicely7.cicely.de> <1573571378957-0.post@n6.nabble.com> <20191112221610.GN43404@cicely7.cicely.de> <20191112225251.GB4552@funkthat.com> <20191113075343.GP43404@cicely7.cicely.de> <20191113164800.GS43404@cicely7.cicely.de> <20191113204826.GV43404@cicely7.cicely.de>
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On Wed, 2019-11-13 at 21:48 +0100, Bernd Walter wrote: > [...] > Ok - the FT4232H mini module won't even probe on USB :-( > I have another FT4232H, which probes fine, but has RS232 transceivers. > A board with - I assume - a genuine CH340G shows exactly the same problem. > Tomorrow I will hook up a logic analyzer to see what really happens on > the wire. > The 4232 minimodule claims that it needs 150ma, so it fails to attach if connected to a bus-powered hub. (Maybe it could pull 150ma if all channels were running max speed and driving activity LEDs, but otherwise it more like actually uses 30-40ma.) -- Ian
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