Changelog 20012011

Schematics:
  • connected J6C.g1 to GND (FMC requirement)
  • removed EXT_CLK (J6.g2, J6.g3) - it's mezzanine to carrier clock
  • rerouted FPGA_TDC_REF_CLK to J6.g2
  • connected mounting holes (B1..B4) directly to GND
  • input stage: R108 reconnected after R120 (directly to IC18.3)
PCB:
  • Removed all routes on the bottom layer from under AD9516 PLL.
  • Increased number of thermal vias under AD9516 and removed solder mask on the bottom layer under the chip to improve heat dissipation
  • Moved IC13/IC22 to bottom layer (too close to board edge)
  • Removed necks from various polygons
  • Widened VDDC_TDC plane next to TDC_STOP2 diff pair
  • Placed CERN logo on the bottom layer
  • Fixed overlapping silkscreen labels
  • Updated stackup info