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S4-1 | S4-2 | Description |
---|---|---|
ON | ON | Default, boot from SD/eMMC or SPI Flash if no SD is detected |
OFF | ON | Boot mode PJTAG0 |
ON | OFF | Boot from eMMC |
OFF | OFF | Boot mode main JTAG |
Note |
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If MicroSD is detected, the system boots from this SD-Card independents from S4 setting. |
UART
XMOD_TXD is sourced by MIO43 and MIO42 by XMOD_RXD.
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