Jasper Lake EDS Vol1

Datasheet

ID Date Version Classification
633935 01/01/2021 Public Content

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Document Table of Contents
DSP

GPIO Buffer Impedance Compensation via SD3_RCOMP

All GPIO buffers require impedance compensation for 1.8 V and 3.3 V operation. The impedance compensation is done via the SD3_​RCOMP signal. Therefore, SD3_​RCOMP signal must have a precision pull down resistor of 200 Ohm (1 %) to GND (regardless of SDXC being used or not). Without proper impedance compensation, the GPIO buffers, including the muxed native functions, may not operate as expected.