Page History

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• Vsup
  It is the main internal power rail irrespective of the external power supply. It is supplied by either Vb2b or Vusb. It manages power distribution, conversion and supervision. It is routed also to connector JM5 as a user power supply output.
• Vb2b
  It is the main power rail when the module is supplied from B2B connector JM5.
• Vusb
  It is the main power rail when the module is supplied from USB mini-B connector J1. The maximum current than can be provided to J1 is determined by the USB power source.
• 3.3V
  It is converted from Vsup by a step-down DC/DC converter and can provide up to 3.0 A to the module and connectors JM4 and JM5.
• 2.5V
  It is converted from Vsup by a step-down DC/DC converter and can provide up to 3.0 A to the DDR SDRAM and connectors JM5.
• 1.2V
  It is converted from Vsup by a step-down DC/DC converter and can provide up to 3.0 A to the V_CCINT power supply pins and connectors JM5.

• VCCAUX
  Here there are two assembly options:

  Warning
  Any other assembly combination of L2 and U6 is not allowed.

1. 1. if inductor L2 is not populated and the low-noise low drop-out regulator U6 is populated, VCCAUX power rail is supplied with its nominal voltage of 2.5 V. This is the recommended option for noise-sensitive circuitry such as clocking and timing infrastructures.  

      Scroll pdf title
      title Assembly option for VCCAUX = 2.5 V (bottom view).

      
      

   2. if the ferrite bead L2 is populated and U6 is not populated, the 3.3V power rail is simply filtered to generate VCCAUX power rail. This is the recommended option for cost-sensitive applications. In this case

• • ensure the noise level on power rail VCCUAX is suitable to your application;

  • avoid the connection of noise sources to power rail VCCUAX.
    
    

    Scroll pdf title
    title Assembly option for VCCAUX = 3.3 V (bottom view).

    Warning
    Any other assembly combination of L2 and U6 is not allowed.

• VCCCIO0
  VCCCIO0 supplies V_CCO to FPGA bank 0. The following assembly options are possible:

  WarningAssembly option where both R131 and R132 are populated is not allowed.

   

1. 1. if resistor R131 is not populated and R132 is populated, VCCCIO0 power rail is set to power rail 2.5V (nominal voltage = 2.5 V).

      Scroll pdf title
      title Assembly option for VCCIO0= 2.5 V (bottom view).

      Note
      Pins 30 and 44 of JM4 are power supply inputs in this case.

       

   2. if resistor R131 is populated and R132 is not populated, VCCCIO0 power rail is set to power rail 3.3V (nominal voltage = 3.3 V). This is the default.
      

      Scroll pdf title
      title Assembly option for VCCCIO0 = 3.3 V (bottom view).

       

       

       

      Note
      Pins 30 and 44 of JM4 are power supply outputs in this case.

       

       

       

   3. if both resistors R131 and R132 are not populated, VCCCIO0 power can be supplied through pins 30 and 44 of B2B connector JM4.
      
      

      Scroll pdf title
      title Assembly option for VCCAUX = off (bottom view)

      Note
      Pins 30 and 44 of JM4 are power supply outputs in this case.

       
      

      Warning
      Assembly option where both R131 and R132 are populated is not allowed.

Power Supervision

Power-on Reset

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