crypto_router_pinmux.mdwn

   1 # NGI POINTER Gigabit Ethernet Router Pinmux
   2
   3 * NLnet page: [[nlnet_2021_crypto_router]]
   4 * bugreport: <https://bugs.libre-soc.org/show_bug.cgi?id=739>
   5 * Top-level bugreport: <https://bugs.libre-soc.org/show_bug.cgi?id=589>
   6 * ls180 packaging: <https://bugs.libre-soc.org/show_bug.cgi?id=508>
   7 * Main page: [[crypto_router_asic]]
   8 * Package Selection page: <https://www.greatek.com.tw/product6-en.html>
   9 * Source code: <https://git.libre-soc.org/?p=pinmux.git;a=blob;f=src/spec/ngi_router.py;hb=HEAD>
  10
  11 # Expected Package
  12
  13 * QFP 256 pin?
  14 * Largest option from Greatek: LQFP-256-0.4mm
  15   - LQFP
  16   - 28x28mm size
  17   - 256 pins
  18   - 0.4mm pitch
  19   - 1.0mm lead length
  20   - body height 1.4mm
  21
  22 # Functionality and Pincount (NOT FINAL, LIKELY TO CHANGE):
  23
  24 Essential:
  25
  26 * 5x RGMII Ethernet - 5x18 = 90 pins [[shakti/m_class/RGMII/]]
  27 * 2x USB ULPI - 2x12 = 24 pins [[shakti/m_class/ULPI/]]
  28 * SDRAM - 39 pins [[shakti/m_class/sdram/]]
  29 * UART - 2 pins
  30 * JTAG - 4 pins [[shakti/m_class/JTAG/]]
  31 * 1.8v Core Power Vdd - 13 pins
  32 * 1.8v Core Power Vss - 13 pins
  33 * 3.3v IO Power Vdd - 10 pins
  34 * 3.3v IO Power Vss - 10 pins
  35 * Reset - 1 pin
  36 * PLL - 5 pins
  37 * SPI - 4 pins [[shakti/m_class/SPI/]]
  38
  39 non-essential:
  40
  41 * GPIO - 16 pins
  42 * EINT - 3 pins
  43 * I2C - 2 pins
  44 * QSPI - Could share with SPI - 6 pins [[shakti/m_class/QSPI/]]
  45 * SD/MMC - Could share with SPI - 4 pins
  46
  47 Total: **246** pins (10 spare)
  48
  49 GPIO, EINT, Vdd, Vss, SDRAM, reset, PLL pin counts come from the LS180 pinmux definitions.
  50
  51 RGMII pinout count comes from [here](https://web.pa.msu.edu/hep/atlas/l1calo/hub/hardware/components/micrel/rgmii_specification_hp_v1.3_dec_2000.pdf)
  52
  53 # SVG image
  54
  55 [[!img ngi_router.svg size=640x ]]