Table of Contents
MBa8Mx DIP switch settings
Boot Modes
The following boot modes of the i.MX8M can be selected by the DIP switches S5, S6, S7, S8, S9 and S10 on the MBa8Mx.
MBa8Mx ≥ Rev.0300
TQMa8Mx
Default positions of DIP switches S5, S7, S8 and S10 when using a TQMa8Mx:
S5
S7
S8
S10
DIP switch S6 and S9 are used to select the boot medium for internal boot:
Internal Boot
S9
SD-Card boot
S6
eMMC boot
S6
TQMa8MxML
Default positions of DIP switches S5, S7, S8 and S10 when using a TQMa8MxML:
S5
S7
S8
S10
DIP switch S6 and S9 are used to select the boot medium for internal boot:
Internal Boot
S9
SD-Card boot
S6
eMMC boot
S6
TQMa8MxNL
The switches S5 and S6 have no effect on the TQMa8MxNL!
Default positions of DIP switches S7, S8 and S10 when using a TQMa8MxNL:
S7
S8
S10
The switches BOOT MODE 2 (BM2) and BOOT MODE 3 (BM3) are located on the module adapter!
DIP switch S9, BOOT MODE 2 and BOOT MODE 3 are used to select the boot medium:
SD-Card boot
S9
BM 2
BM 3
eMMC boot
S9
BM 2
BM 3
Module Rev100: eMMC Boot currently not supported!
Detailed DIP Switch Settings
Detailed DIP Switch Settings
S5
| # | Feature | ON | OFF |
|---|---|---|---|
| 1 | BOOT_CFG0 | 0 | 1 |
| 2 | BOOT_CFG1 | 0 | 1 |
| 3 | BOOT_CFG2 | 0 | 1 |
| 4 | BOOT_CFG3 | 0 | 1 |
| 5 | BOOT_CFG4 | 0 | 1 |
| 6 | BOOT_CFG5 | 0 | 1 |
| 7 | BOOT_CFG6 | 0 | 1 |
| 8 | BOOT_CFG7 | 0 | 1 |
S6
| # | Feature | ON | OFF |
|---|---|---|---|
| 1 | BOOT_CFG8 | 0 | 1 |
| 2 | BOOT_CFG9 | 0 | 1 |
| 3 | BOOT_CFG10 | 0 | 1 |
| 4 | BOOT_CFG11 | 0 | 1 |
| 5 | BOOT_CFG12 | 0 | 1 |
| 6 | BOOT_CFG13 | 0 | 1 |
| 7 | BOOT_CFG14 | 0 | 1 |
| 8 | BOOT_CFG15 | 0 | 1 |
S7
| # | Feature | ON | OFF |
|---|---|---|---|
| 1 | unused | unused | unused |
| 2 | unused | unused | unused |
| 3 | UART 2 | USB Debug Output | Pin Header (X17) |
| 4 | UART 1 | USB Debug Output | Pin Header (X17) |
S8
| # | Feature | ON | OFF |
|---|---|---|---|
| 1 | TQMa8M_ONOFF | ||
| 2 | TQMa8M_SYS_RST# | ||
| 3 | I2C module select | TQMa8Mx | TQMa8MxNL / TQMa8MxML |
| 4 | SPI_MUX_CTRL | Pin Header X34 | MicroBUS |
S9
| # | Feature | ON | OFF |
|---|---|---|---|
| 1 | EN_VCC_FAN | On | off |
| 2 | BOOT_MODE0 | 0 | 1 |
| 3 | BOOT_MODE1 | 0 | 1 |
| 4 | DSI_MUX_CTRL | eDP | LVDS |
S10
| TQMa8Mx | TQMa8MxML | TQMa8MxNL | |
|---|---|---|---|
| 1 | OFF | ON | ON |
| 2 | OFF | ON | ON |
| 3 | OFF | OFF | ON |
| 4 | OFF | OFF | ON |