5.10.1 Boot Signals Management
Following are shown the signals you must consider during the boot sequence:
Signal
SODIMM Pin
number
Status on Reset
(
Mandatory)
PIN constrained on Module Boot Config Signal
Boot eFUSE
Descriptions
UART8_RTS
106
Floating
10K Ohm Pull Down
BOOT_CFG4[7]
GPIO3_27
65
Floating
10K Ohm Pull Down
BOOT_CFG4[6]
GPIO3_23
15
Floating
10K Ohm Pull Down
BOOT_CFG4[2]
DISP0_D17
141
Floating
10K Ohm Pull Down
BOOT_CFG4[1]
DISP0_D16
142
Floating
10K Ohm Pull Down
BOOT_CFG4[0]
DISP0_D15
143
Floating
10K Ohm Pull Down
BOOT_CFG2[7]
DISP0_D14
144
Floating
10K Ohm Pull Down
BOOT_CFG2[6]
DISP0_D13
145
Floating
10K Ohm Pull Down
BOOT_CFG2[5]
DISP0_D12
146
Floating
10K Ohm Pull Down
BOOT_CFG2[4]
DISP0_D11
147
Floating
10K Ohm Pull Down
BOOT_CFG2[3]
DISP0_D10
148
Floating
10K Ohm Pull Down
BOOT_CFG2[2]
DISP0_D9
149
Floating
10K Ohm Pull Down
BOOT_CFG2[1]
DISP0_D8
150
Floating
10K Ohm Pull Down
BOOT_CFG2[0]
DISP0_D7
151
Floating
-
BOOT_CFG1[7]
DISP0_D6
152
Floating
-
BOOT_CFG1[6]
DISP0_D5
153
Floating
12K Ohm Pull Down
BOOT_CFG1[5]
DISP0_D4
154
Floating
-
BOOT_CFG1[4]
DISP0_D3
155
Floating
10K Ohm Pull Down
BOOT_CFG1[3]
DISP0_D2
157
Floating
10K Ohm Pull Down
BOOT_CFG1[2]
DISP0_D1
158
Floating
10K Ohm Pull Down
BOOT_CFG1[1]
DISP0_D0
159
Floating
10K Ohm Pull Down
BOOT_CFG1[0]
Table 24
The NXP documentation declares the above signals as BOOT_CFG signals but no other information (function and reset status) is
currently given about them.
Basing on the Engicam test result we currently suggest to leave all these signals floating during reset status and
it's strongly
recommended to consult the NXP's documentation before starting the carrier board design.
WARNING:
The BOOT_CFG4 signals are used also to configure the boot from serial ROM, please always refer to the NXP's
documentations to design and configure the listed BOOT_CFG signals of your own board
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