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User's Manual l TQMa7x UM 0203 l © 2022, TQ-Systems GmbH
Page 13
3.2.1.6
Boot interfaces
In the next chapters, the configuration of the following boot devices is described:
•
eMMC
•
QSPI NOR flash
•
SD card
3.2.1.7
Boot device eMMC
Table 10:
Boot configuration eMMC at uSDHC3
i.MX7
TQMa7x
eFuse
Option
Setting
Signal
Pin
BOOT_CFG15
Boot Device:
0010 – MMC / eMMC
0
LCD_DATA15
X2-98
BOOT_CFG14
0
LCD_DATA14
X2-95
BOOT_CFG13
1
LCD_DATA13
X2-96
BOOT_CFG12
0
LCD_DATA12
X2-93
BOOT_CFG11
Port Selection:
00 – uSDHC1
01 – uSDHC2
10 – uSDHC3
1
LCD_DATA11
X2-94
BOOT_CFG10
0
LCD_DATA10
X2-91
BOOT_CFG9
eMMC Reset:
0 – Disabled
1 – Enabled
0
LCD_DATA09
X2-92
BOOT_CFG7
Boot Speed:
0 – Normal / Regular Boot
1 – Fast Boot
0
LCD_DATA07
X2-88
BOOT_CFG6
Bus width:
000 – 1 bit
001 – 4 bit
010 – 8 bit
101 – 4 bit DDR (MMC 4.4)
110 – 8 bit DDR (MMC 4.4)
0
LCD_DATA06
X2-85
BOOT_CFG5
1
LCD_DATA05
X2-86
BOOT_CFG4
0
LCD_DATA04
X2-83
BOOT_CFG3
Speed Selection:
00 – Normal Speed
01 – High Speed
10 – Reserved for HS200
0
LCD_DATA03
X2-84
BOOT_CFG2
0
LCD_DATA02
X2-81
4:
Voltage level or condition of eFuse.