Preliminary User's Manual l TQMa65xx UM 0001 l © 2021, TQ-Systems GmbH
Page 14
3.2.1.3
Boot Mode pin mapping
In normal boot operation the ROM execution is directed through the main BOOTMODE[18:0] pins.
Table 9:
BOOTMODE Pin Mapping
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Backup Config
Primary Config
Min
Backup Mode
Primary Mode
Table 10:
Primary Boot Mode Selection
BOOTMODE Pins
Primary Boot Mode Selected
3
2
1
0
0
0
0
0
Sleep (No boot – debug mode)
0
0
0
1
OSPI
0
0
1
0
QSPI
0
0
1
1
Hyperflash
0
1
0
0
SPI (on QSPI/OSPI port 0 in legacy SPI mode)
0
1
0
1
I
2
C
0
1
1
0
MMC/SD card, eMMC boot from UDA or file system
0
1
1
1
Ethernet
1
0
0
0
USB
1
0
0
1
PCIe
1
0
1
0
UART
1
0
1
1
Reserved
1
1
0
0
GPMC NOR
1
1
0
1
eMMC boot from boot partition (with auto-fall back to file system)
1
1
1
0
Reserved (acts as Sleep)
1
1
1
1
Reserved (acts as Sleep)
Table 11:
Backup Mode Selection
BOOTMODE Pins
Backup Boot Mode Selected
6
5
4
0
0
0
None (no backup boot will be attempted)
0
0
1
USB
0
1
0
UART
0
1
1
Ethernet
1
0
0
MMC/SD
1
0
1
SPI (on OSPI port 0 in legacy SPI mode)
1
1
0
Hyperflash
1
1
1
I
2
C