It’s a fuse off a FireWire card. Probably not the right rating, but I just put it in place temporarily.What's the component at F1?
I've just noticed you have caps fitted at R146, 147 and 148? These should be resistors?View attachment 53862
I've populated some more of the card tonight - the passives highlighted in green. It hasn't made any difference. The only other crucial part now, I think, is the oscillator.
One thing I've realised is that my other PCI USB cards no longer work - they are not even seen as USB cards anymore, just as unknown PCI devices. It might be a case of either/or if I get the Perch USB working.
Oops - you’re right.I've just noticed you have caps fitted at R146, 147 and 148? These should be resistors?
I’d argue U9 isn’t needed.It won't work until you figure out what U9 is (as well as fitting the clock) because U9 is in line with the power to the port in your schematic.
Ah yes, the fuse isn't in line and has its own connection to Vdd.I’d argue U9 isn’t needed.
See the attached photos from the CMD 0670 manual.
They give three options for power connection. U9 might well be intended for the UCC 3912 it shows as option 3.
It states to only use one option. So my thinking is that if I have the fuse onboard, I won’t need the chip.
On my Whisper schematic, it looks like the 5v needed to supply bus power would come from VDD on the other side of the fuse. U9 is kinda separate from that circuit. If I were to integrate U9, I would omit the fuse and bus power would come from the chip itself along the same pathway.
The Wings card doesn’t seem to have this chip as part of the footprint at all, although it does have the fuse and big capacitors, again backing up the idea that it’s optional.
View attachment 53875
View attachment 53876
I thought that 10k ohms would be ok for pull up resistors, should I try something else?
It does. I just updated my schematic. I put 10k resistors on those, no idea if they're right.Did some more tracing. Looks like it goes to a potential divider between R75 and R76.
Yes, keep it up, with your input I'll get this solved 2x faster. Don't hold back!You'll have to forgive me, I haven't looked at everything in detail so I'm trying to ask things about stuff that might be an issue, or I don't understand. I'm asking lots of dumb questions, but hopefully it is still useful
A square of 'nano tape'. It's not touching anything.What is that clock sat on? Don't let it short anything.
Those won't be 10k and this would cause the issue you're seeing. That is a potential divider.It does. I just updated my schematic. I put 10k resistors on those, no idea if they're right.
View attachment 53939