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Management board for SPEC-A7 #1

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gkasprow opened this issue May 31, 2024 · 1 comment
Open

Management board for SPEC-A7 #1

gkasprow opened this issue May 31, 2024 · 1 comment

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@gkasprow
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gkasprow commented May 31, 2024

The management board has the following features:

  • RJ45 Base10/100/1000 T Ethernet connector (DP83869HMRGZ); use low cost connector
  • SFP 100/1000 Ethernet connector (PHY shared with RJ45)
  • automatic detection between SFP/RJ45, using SFP present signal (needs PHY reconfiguration)
  • ARM SOM capable of running Linux and 2x RGMII Ethernet (QSMP); one RGMII goes to PHY, another goes to SPEC-A7; don't forget about series termination
  • ARM SOM capable of talking to FPGA console for WR node (re)configuration and monitoring
  • ARM SOM capable of reconfiguring the FPGA
  • must fit together with SPEC-A7 into F1040-160 Bopla enclosure; needs to be attached to SPEC-A7 using at least 3 screws and standoffs
  • 4 layer PCB

Example configuration:
image

@gkasprow
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gkasprow commented Jun 7, 2024

The CPU is connected in following way:

  • RGMII 1 routed to PHY which is shared between RJ45 and SFP
  • RGMII 2 routed to WR node connector
  • UART is routed to WR node connector
  • CPU supply is derived from 12V rail on WR node connector

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