Does the AM437x SYSBOOT[10] need an external pull?

Trent Oshiro

In the revised AM437x TRM, it states:

SYSBOOT[10] should always be set to 0 for normal operation. SYSBOOT[10] = 1 is reserved.

In a previous thread I just had, James stated that

OK, so your specific requirements would be to have pulls on SYSBOOT0-4, 12-15. All others are don't care.

I am just slightly confused as to whether or not SYSBOOT[10] needs an external PD to ensure proper boot up. We are using the AM437x_LCD_DATA signals.

Thanks,

Trent

Yordan Kovachev over 10 years ago

Hi Trent,

Looking at the AM437x TRM, I understand that you need to tie SYSBOOT[10] to 0 (use the external PD).
Moreover same thing is done in AM437x GP reference schematic (page 25): http://processors.wiki.ti.com/images/9/95/Am437x_gp_evm_3k0006_schematic_rev1_4a.pdf

Best Regards,

Yordan

Biser Gatchev-XID over 10 years ago

Hi Trent,

The AM437X TRM Rev. B is correct. SYSBOOT[10] should always be set to 0 for normal operation. SYSBOOT[10] = 1 is reserved.

Processors forum