Part Number: AM62A7
Tool/software:
Hello, Sreenivasa.
I heard from Jack cha you are going to help to review some topics of my AM62A7 design.
So, I start a thread to be reviewed from you about Boot mode configuration.
Here is the schematic attached.
Multi Sensor_SOM_Rev_A_BOOTMODE_Circuit.PDF
It is one of the schematic pages including Boot mode configuration.
SK-AM62A_LP EVM has two 8-channel on/off switches.
I has designed boot mode setting circuit refered from EVM and section 4.5.15.1 Boot Modes in its user guide.
I need only USB, eMMC, QSPI boot mode among all setting condition.
Also, I would like to use just 3-channel on/off switch to set each boot mode.
On the schematic, 3 ports "BOOT0, BOOT1, BOOT2" are externally connected to 3-channel switch.
And some pins that have fixed logical value are pulled-down.
Because I do not need HDMI function, I don't use any middle buffer of gate, just connect to MPU pins directly.
Additionally, there is a logic map of relation between BOOT0~2 and each Bootmode.
| Port# | QSPI | eMMC | USB(DFU) | USB |
| BOOT0 | 0 | 1 | 0 | 0 |
| BOOT1 | 0 | 1 | 1 | 1 |
| BOOT2 | - | - | 0 | 1 |
Could you agree with that this design is useful to apply my requirement?
Comment about that if there is any error or opinion.
Regard
