SPRUJ28F November 2021 – August 2025 AM68 , AM68A , TDA4AL-Q1 , TDA4VE-Q1 , TDA4VL-Q1
When in normal boot flow (MCU Only = 0), it is possible to modify certain peripheral settings, such as chip-select, bus speed, and others, depending on the peripheral selected.
The mapping of configuration pins per boot mode is shown in Table 4-10. See the respective sections for details.
| Primary Boot Mode Config Pins(1) | Primary Boot Mode B Pin | Primary Boot Mode A Pins | Primary Boot Mode | ||||
|---|---|---|---|---|---|---|---|
| 6 | 5 | 4 | 0 | MCU 5 | MCU 4 | MCU 3 | |
| Speed | 0 | 0 | 0 | 0 | Hyperflash | ||
| Speed | Csel | 0 | 0 | 0 | 1 | OSPI | |
| Port | Csel | 0 | 0 | 1 | 0 | QSPI | |
| SFDP | Read Cmd | Mode | 0 | 0 | 1 | 1 | xSPI |
| Delay | Link stat | 0 | 1 | 0 | 0 | Ethernet RGMII | |
| Reserved | Read Mode 2 | Read Mode 1 | 0 | 1 | 0 | 1 | Serial NAND |
| Bus reset | Reserved | Addr | 0 | 1 | 1 | 0 | I2C |
| Port | 0 | 1 | 1 | 1 | UART | ||
| Port | Bus width | Fs/raw | 1 | 0 | 0 | 0 | MMC/SD card |
| Port | Bus width | Voltage | 1 | 0 | 0 | 1 | eMMC |
| Reserved | Mode | Lane Swap | 1 | 0 | 1 | 0 | USB |
| Clkout | Clk src | Reserved | 1 | 1 | 0 | 0 | Ethernet RMII |
| Reserved | Ssc | Clocking | 1 | 1 | 0 | 1 | PCIe |
| Port | Mode | Csel | 1 | 1 | 1 | 0 | SPI |
| Split | Arm/Thumb | No/Dev | 1 | 1 | 1 | 1 | No-boot/Dev boot |