Jump to content
RobG

MSP430F5510 USB Development Board

Recommended Posts

Looks like an amazing alternative to LP when you need USB or more pins, flash, ram. Nice work!

 

Just noticed you criss-cross the USB D+/D- lines with a via. It has been discussed elsewhere in this forum that it's better not to (although I don't know if it's a real problem or just exaggeration). One solution is to enter through the corner and connect to the pads from the "inside" of the chip.

 

EDIT: Maybe a CCW 45

Share this post


Link to post
Share on other sites

Yeah, there's some nice tidbits in that 5529 thread on usb traces. I managed to meet all the guidelines on the 5529 board... wasn't too hard. You might be more constrained with board size limitations though, still worth a shot if you feel like trying :)

Share this post


Link to post
Share on other sites

The design guide tells you to limit the number of vias, but they are OK.

Route the high-speed USB signals using a minimum of vias and corners. This reduces signal reflections and impedance changes.

I did consider doing something like below, but I am not sure if this will be any better.

Placing 5510 or USB on the bottom layer would probably be the best solution here.

Are there any software USB diagnostic tools I could use that will show mi transfer errors?

 

 

post-197-135135559471_thumb.png

 

 

Also, relative to some other designs out there, I don't think my design is that problematic.

 

 

post-197-135135559482_thumb.png

post-197-13513555949_thumb.jpg

post-197-135135559493_thumb.jpg

Share this post


Link to post
Share on other sites

Yeah, I guess it's okay. As for assembly, I'd say partially assembled. Better leave the headers unpopulated, for those opting for male or female headers. LDO is not always necessary (when usign internal LDO), but since it can be jumper-disabled, better put it there ;)

Share this post


Link to post
Share on other sites
USB tests completed. Should I make this board available bare or preassembled?

I vote for bare board. But I will get a couple anyways :-)

Share this post


Link to post
Share on other sites

Good work! Do you have the USB-UART code in hand? I'm intending to learn to use the USB peripheral in F5510/5529

 

BTW Nice sawn off LP ;)

Ever thought on putting female headers on the underside of the LP for programming boards like this?

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...