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©2016 Integrated Device Technology, Inc

Revision B March 17, 2016

83918 Data Sheet

Recommendations for Unused Input and Output Pins

Inputs:

Crystal Inputs

For applications not requiring the use of the crystal oscillator input,

both XTAL_IN and XTAL_OUT can be left floating. Though not

required, but for additional protection, a 1k

 resistor can be tied

from XTAL_IN to ground.

LVCMOS_CLK Input

For applications not requiring the use of a clock input, it can be left

floating. Though not required, but for additional protection, a 1k



resistor can be tied from the LVCMOS_CLK to ground.

LVCMOS Control Pin

The control pin has an internal pulldown; additional resistance is not

required but can be added for additional protection. A 1k

 resistor

can be used.

Outputs:

LVCMOS Outputs

All unused LVCMOS outputs can be left floating. We recommend

that there is no trace attached.