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Scroll Title
titleCarrierboard basic power and group pin assignment (Top View), recommented to verify with Schematics

 

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Carrier Board Checklist

 

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Schematic Checklist

   
1Are B2B pin numbers on the connectors mirrored compared to the module pin numbers?As B2B connectors are "unisex" type the do mirror pin numbers when connecting. That is pin1 connects to pin2, and pin2 to pin1, etc.
2Are B2B connectors named JB1, JB2, JB3?This is not a hard requirement, but it helps to use the same identifiers.
3Are all GND pins connected to a common ground net? 
4Are all VIN pins connected together? 
5Is JB2 pin 92 pin used as VREF for the JTAG interface?for future compatibility only, currently all modules have 3.3V JTAG
6Are external circuits/buffers connecting to MIO bank 1 pins powered from JB1 pin 40?JB1 pins 18, 20, 22, 24, 26, 28 use voltage at pin 40 as VCCIO. Currently it is 1.8V for all released modules.

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