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User Guide
iolinker Evaluation Board JI11x-81L-B
4 Changing VCC_IO
If you intend to change VCC_IO to another voltage than the 3.3 V used by default, remove
resistors R71 and R75. Then connect at least one pad (near the FPGA) to another voltage
between 1.2 V and 3.465 V. On the connector X7, pin 20 is unused and can be repurposed.
Take care to not damage the FPGA when soldering.
After changing VCC_IO, the input and output voltage level of all GPIOs will change.
This includes the JTAG interface. Please make sure that your JTAG cable supports the new
voltage.
c
2017 jInvent. The specifications and information herein are subject to change without notice.
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