SPRUJ17H March 2022 – October 2024 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1
The ROM execution is directed through the main boot mode pins. This provides flexibility through additional booting peripherals. The device must be powered and functional.
Main boot mode pins are shown in Table 5-2.
Any Bootmode pins marked as Reserved or not used must be tied high or low with pull resistors. They should not be left floating.
Boot Mode | SPI0_D0_pad (SOP3) | SPI0_CLK_pad (SOP2) | QSPI_D1 (SOP1) | QSPI_D0 (SOP0) |
---|---|---|---|---|
QSPI (4S) - Quad Read Mode | 0 | 0 | 0 | 0 |
UART | 0 | 0 | 0 | 1 |
QSPI (1S) - Single Read Mode | 0 | 0 | 1 | 0 |
QSPI (4S) - Quad Read UART Fallback Mode | 0 | 1 | 0 | 0 |
QSPI (1S) - Single Read UART Fallback Mode | 0 | 1 | 0 | 1 |
DevBoot | 1 | 0 | 1 | 1 |
Unsupported Boot Mode | All other combinations not defined above |