# # Switch Components # # Key In Components File for the Hub Module # -------------------------------------------- # # Original Rev. 22-Mar-2015 # Most Recent Rev. 14-Jul-2016 # # # This Comps file holds Ethernet Switch Components that did # not naturally fit into any of the other Switch Comps files. # # - Capacitors for the Cap Coupled Ethernet Links # # - The R2x12 jumpers for the EN_EEE strapping option pin 38. # # These were added late in the design, do not fit in the # same location relative to each Switch Chip, and thus could # not be placed with migt_f.py These jumper are on the # Top side of the Hub PCB. # # # # Board_Location # Ref Part_Number Symbol Geometry X Y Properties #----- ----------- ------ ------------------ -------------- ---------- # # # Coupling Capacitors for the Switch Chip B <--> Switch Chip C connection # C2301 Cap_47_nFd_0402 SY_JUNK cap_0402 100.20 67.00 1 0 C2302 Cap_47_nFd_0402 SY_JUNK cap_0402 100.20 68.20 1 0 C2303 Cap_47_nFd_0402 SY_JUNK cap_0402 100.20 70.20 1 0 C2304 Cap_47_nFd_0402 SY_JUNK cap_0402 100.20 71.40 1 0 C2305 Cap_47_nFd_0402 SY_JUNK cap_0402 100.20 73.40 1 0 C2306 Cap_47_nFd_0402 SY_JUNK cap_0402 100.20 74.60 1 0 C2307 Cap_47_nFd_0402 SY_JUNK cap_0402 100.20 76.60 1 0 C2308 Cap_47_nFd_0402 SY_JUNK cap_0402 100.20 77.80 1 0 # # Coupling Capacitors for the Switch Chip B <--> Switch Chip A connection # C2309 Cap_47_nFd_0402 SY_JUNK cap_0402 100.20 53.00 1 0 C2310 Cap_47_nFd_0402 SY_JUNK cap_0402 100.20 54.20 1 0 C2311 Cap_47_nFd_0402 SY_JUNK cap_0402 100.20 56.20 1 0 C2312 Cap_47_nFd_0402 SY_JUNK cap_0402 100.20 57.40 1 0 C2313 Cap_47_nFd_0402 SY_JUNK cap_0402 100.20 59.40 1 0 C2314 Cap_47_nFd_0402 SY_JUNK cap_0402 100.20 60.60 1 0 C2315 Cap_47_nFd_0402 SY_JUNK cap_0402 100.20 62.60 1 0 C2316 Cap_47_nFd_0402 SY_JUNK cap_0402 100.20 63.80 1 0 # # Coupling Capacitors for the Switch Chip B <--> This Hub's FPGA Phys U22 # C2317 Cap_47_nFd_0402 SY_JUNK cap_0402 79.00 86.60 1 180 C2318 Cap_47_nFd_0402 SY_JUNK cap_0402 79.00 87.80 1 180 C2319 Cap_47_nFd_0402 SY_JUNK cap_0402 79.00 89.60 1 180 C2320 Cap_47_nFd_0402 SY_JUNK cap_0402 79.00 90.80 1 180 C2321 Cap_47_nFd_0402 SY_JUNK cap_0402 72.00 86.60 1 180 C2322 Cap_47_nFd_0402 SY_JUNK cap_0402 72.00 87.80 1 180 C2323 Cap_47_nFd_0402 SY_JUNK cap_0402 72.00 89.60 1 180 C2324 Cap_47_nFd_0402 SY_JUNK cap_0402 72.00 90.80 1 180 # # R2x12 jumpers for the EN_EEE strapping option pin 38. # # Installing this jumper tells the Switch Chip NOT to try # to operate its Energy Efficient Ethernet in its Switch MACs. # # We are going to install these EN_EEE jumper by defaul. # # Pulling this pin LOW Disables the EEE option. # R2012 Res_Zero_Ohm_0603 SY_JUNK res_0603 145.00 67.30 1 90 R2112 Res_Zero_Ohm_0603 SY_JUNK res_0603 95.00 67.30 1 90 R2212 Res_Zero_Ohm_0603 SY_JUNK res_0603 188.00 64.50 1 270