User's Manual l TQMa8MxML UM 0103 l © 2022, TQ-Systems GmbH
Page 21
3.2.1.6.1
Boot device eMMC
Table 12:
Boot configuration eMMC at USDHC3
Fuse
Signal
TQMa8MxML
Setting
BOOT_CFG14
SAI1_TXD6
P4
Boot Device:
010: MMC/eMMC
BOOT_CFG13
SAI1_TXD5
N4
BOOT_CFG12
SAI1_TXD4
N2
BOOT_CFG11
SAI1_TXD3
M3
Port Selection:
00:
uSDHC1
01:
uSDHC2
10:
uSDHC3
BOOT_CFG10
SAI1_TXD2
M2
BOOT_CFG9
SAI1_TXD1
L3
Power Cycle Enable:
0:
No power cycle
1:
Enabled
BOOT_CFG7
SAI1_RXD7
K4
Boot Speed:
0:
Normal/Regular Boot
1:
Fast Boot
BOOT_CFG6
SAI1_RXD6
J3
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)
BOOT_CFG5
SAI1_RXD5
J2
BOOT_CFG4
SAI1_RXD4
H4
BOOT_CFG3
SAI1_RXD3
H3
Speed Selection:
00:
Normal Speed
01:
High Speed
10:
Reserved for HS200
BOOT_CFG2
SAI1_RXD2
H1
BOOT_CFG1
SAI1_RXD1
G2
USDHC I/O Voltage (Normal Boot):
0:
3.3 V
1:
1.8 V
BOOT_CFG0
SAI1_RXD0
G1
USDHC I/O Voltage (Manufacture Mode):
0:
3.3 V
1:
1.8 V
