Preliminary User's Manual l TQMaX4XxL UM 0001 l © 2022, TQ-Systems GmbH
Page 10
3.2.2.2
Boot device eMMc
Table 5: Boot device selection eMMC
Boot configuration pin
Setting
TQMaX4XxL
BOOTMODE[9:7]
Primary Boot Mode Config:
eMMC in only supported on MMC0 (8-
bit mode) and has no pin multiplex
options
Don't care
BOOTMODE[6:3]
Primary Boot Mode:
0000 = Reserved
0001 = OSPI
0010 = QSPI
0011 = SPI
0100 = Ethernet RGMII
0101 = Ethernet RMII
0110 = I2C
0111 = UART
1000 = MMCSD card
1001 = eMMC
1010 = USB
1011 =GPMC NAND
1100 =GPMC NOR
1101 =PCIe
1110 =xSPI
1111 = No-boot/Dev boot
1001
3.2.2.3
Boot device NOR-flash
Table 6:
Selection of the boot device NOR flash
Boot configuration pin
Setting
TQMaX4XxL
BOOTMODE9
Reserved, fixed to 0
Don't Care
BOOTMODE8
Clock Source:
0 = Iclock source external
1 = Iclock source internal (pad loopback)
1
BOOTMODE7
Chip-Select:
0 = Boot-Flash is on CS0
1 = Boot-Flash is on CS1
0
BOOTMODE[6:3]
Primary Boot Mode:
0000 = Reserved
0001 = OSPI
0010 = QSPI
0011 = SPI
0100 = Ethernet RGMII
0101 = Ethernet RMII
0110 = I2C
0111 = UART
1000 = MMCSD card
1001 = eMMC
1010 = USB
1011 =GPMC NAND
1100 =GPMC NOR
1101 =PCIe
1110 =xSPI
1111 = No-boot/Dev boot
0010
Further boot configurations can be found in the Reference Manual (3).