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Hardware Description
4.12 eQEP Interface
The AM243x LaunchPad supports two eQEP interfaces. eQEP1 and eQEP2 of the AM243x SoC are connected
to the eQEP headers. Both eQEP1 and eQEP2 headers need a voltage translation circuit (TXB0106RGYR) to
level shift the IO's to 5 V from 3.3 V.
•
eQEP1_A, eQEP1_B, and eQEP1_I are directly connected to the eQEP header (J12) after voltage
translation .
•
eQEP2_A, eQEP2_B are directly connected to the eQEP header (J21) after voltage translation. eQEP2_I
requires an external 1:2 mux (TMUX154EDGSR) since eQEP2_I and MCAN0_TX come from the same pin
(B13). Mux channel selection is done using SoC GPIO.
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AM243x LaunchPad™ Development Kit User's Guide
Figure 4-17. eQEP Interface
Figure 4-18. eQEP1 Header
Copyright © 2022 Texas Instruments Incorporated
SPRUJ12B – AUGUST 2021 – REVISED OCTOBER 2022
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