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Original question:

SYS_BOOT table in the TRM for AM35xx

DM3730: SYS_BOOT table in the TRM for AM35xx DM37xx

jan Kwiat
Prodigy 10 points
Part Number: DM3730

Hi,

Another question on SYS_BOOT - sorry for that.

I am trying to UART boot my board which  I experimented (too much) with.

It has a DM37xx processor with set of jumpers contected to SYS_BOOT pins.

I understand that reconfiguring the jumpers should change the boot order.

Right now board is configured in such way:

SYS_BOOT0 - [ ] - jumper open

SYS_BOOT1 - [ ] - jumper open

SYS_BOOT2 - [ ] - jumper open

SYS_BOOT3 - [ ] - jumper open

SYS_BOOT4 - [X] - jumper closed

SYS_BOOT5 - [ ] - not connected anywhere

which sys_boot [4:0] configuration if corresponds to?

Am I right thinking that this is: 0b00001

I read that as 0b[SYS_BOOT0][SYS_BOOT1[[SYS_BOOT2][SYS_BOOT3[[SYS_BOOT4] - in my case all zeros except sys_boot4?

If I shorten SYS_BOOT0 and SYS_BOOT3 - will I get 0b10011

Thanks in advance

  • 0
    TI__Guru** 101330 points

    Hello Jan,

    does jumper open mean the pin is getting pulled up, or pulled down?

    As per the DM3730 Datasheet table "System and Miscellaneous Signals Description", sys_boot0 = boot configuration mode bit 0, sys_boot1 = bit 1, etc. So bits 0 to 5 are in these positions: sys_boot[5:0] = 0b543210.

    Regards,

    Nick