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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 VCCINT 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.
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). - 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
VCCCIO0
VCCCIO0 supplies VCCO to FPGA bank 0. The following assembly options are possible:Note Pins 30 and 44 of JM4 are power supply inputs in this case.
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