Table 3-10. Primary Boot Media Configuration Bootmode[9:7]; Table 3-11. Backup Boot Mode Selection Bootmode[12:10]; Table 3-12. Backup Boot Media Configuration Bootmode[13] - Texas Instruments AM64 Series User Manual

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BOOTMODE[9:7] - These pins provide optional settings and are used in conjunction with the primary boot
device selected. For more details, see the device-specific TRM.

Table 3-10. Primary Boot Media Configuration BOOTMODE[9:7]

SW3.2
RSVD
RSVD
RSVD
RSVD
RSVD
RSVD
Bus Reset
RSVD
Port
RSVD
Core Volt
RSVD
RSVD
RSVD
SFDP
RSVD
BOOTMODE[12:10] - Select the backup boot mode, that is, the peripheral/memory to boot from, if primary boot
device failed.

Table 3-11. Backup Boot Mode Selection BOOTMODE[12:10]

SW3.2
off
off
off
off
on
on
on
on
BOOTMODE[13] - These pins provide optional settings and are used in conjunction with the backup boot device
devices. For more details on bit details, see the device-specific TRM. When on, switches SW3.6 sets 1 and,
when off, sets 0.

Table 3-12. Backup Boot Media Configuration BOOTMODE[13]

BOOTMODE[14:15] - Reserved
SPRUIX0C – FEBRUARY 2021 – REVISED JUNE 2021
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SW3.1
RSVD
Iclk
Iclk
Mode
RSVD
RSVD
Don't Care
RSVD
RSVD
RSVD
Mode
RSVD
RSVD
RSVD
Read Cmd
RSVD
SW3.1
off
off
on
on
off
off
on
on
SW3.6
RSVD
Mode
RSVD
RSVD
RSVD
Port
RSVD
RSVD
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SW2.8 Primary Boot Device
RSVD
Csel
Csel
Csel
RSVD
RSVD
Addr
RSVD
Fs/raw
RSVD
Lane Swap
RSVD
RSVD
RSVD
Mode
RSVD No-boot / Dev-boot
SW2.8 Backup Boot Device Selected
off None (No backup mode)
on USB
off RSVD
on UART
off RSVD
on MMC/SD
off SPI
on I2C
Boot Device
None
USB
RSVD
UART
RSVD
MMC/SD
SPI
I2C
AM64x/AM243x GP EVM User's Guide
System Description
RSVD
OSPI
QSPI
SPI
RSVD
RSVD
I2C
UART
MMC / SD Card
eMMC
USB
GPMC NAND
GPMC NOR
PCIe
xSPI
21