Post
Topic
Board Development & Technical Discussion
Re: Modular FPGA Miner Hardware Design Development
by
Olaf.Mandel
on 31/07/2011, 16:12:43 UTC
I uploaded a new version of the PSU design and a new MCU design (minimal changes) to github and dropbox. Commit logs:

  • Fixed name of MSP430 package: PT48 -> RGZ48
  • Updated library after learning about technologies:
    • Started using the ? and * keywords in device names, changed several parts
    • Added the PT48 package to the MSP430F55*I part, added attributes
    • This causes an incompatible name change in the MSP430F55XX device: use the replace command
    • Added the LM3671 device
  • Refinements on PSU section:
    • Added 3.3V -> 2.5V PSU
    • Changed all devices to default libraries
    • This specifically includes changes to the CPOL parts: they were oriented the wrong way around
  • Small changes to MCU:
    • Changed name of VUSB to +3V3 (by changing the supply symbol)
    • Removed +5V name (by deleting the supply symbol)
    • Named the two USB signals DM and DP
    • Added two V<-> symbols and routed them to DM and DP

@Li_gangyi: Can you verify the capacitors in the PSU? I changed them to something in the default rcl library (your parts were from a non-standard lib). But this turned the CPOL elements around. Please make sure you agree that the negative pin is marked on your parts.

@O_Shovah: You can update you local copy of the MCU.sch that you worked on by doing the following steps (maybe first open my schematic for a quick peek):

  • Get the new project.lbr and update the schematic
  • REPLACE the MCU device with the MSP430F5507IRGZ
  • DELETE the VUSB symbol
  • ADD +3V3@supply1 in its place
  • DELETE the +5V symbol and the stub of wire connecting to it
  • NAME the nets going to the two ESD diodes DM and DP
  • ADD two V<-> symbols at these coordinates: (0.8 6.7) and (0.8 6.6). Both are rotated by 180 degrees
  • Change the VALUE of each symbol: the upper one to DM, the lower one to DP
  • Route a NET to the symbols, starting at the two ESD diodes