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User's Manual l TQMLS1028A UM 0101 l © 2020, TQ-Systems GmbH
Page 14
4.7.2
eMMC / SD card
The LS1028A provides two SDHCs; one is for SD cards (with switchable I/O voltage) and the other is for the internal eMMC (fixed
I/O voltage). When populated, the TQMLS1028A internal eMMC is connected to SDHC2. The maximum transfer rate corresponds
to the HS400 mode (eMMC from 5.0). In case the eMMC is not populated, an external eMMC can be connected.
Figure 9:
Block diagram eMMC interface
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