SYS_DRM_MSECURE

Meir:

Please refer to the following post which addresses the same question:

http://e2e.ti.com/support/dsp/omap_applications_processors/f/447/p/71883/261019.aspx#261019

Best Regards,

Michael T

PS: Please mark this post as answered via the Verify Answer button below if you think it answers your question.  Thanks!

Hi Michael,

According to OMAP3530/25 Application Processor, SPRS507F–FEBRUARY 2008–REVISED OCTOBER 2009, Page 44, (CBB pacage), SYS_DRM_MSECURE, AF9 ball is input to OMAP.

According to your answer it is OUTPUT from OMAP.

Regards,

Meir

Meir:

That is an error in the data manual.  SYS_DRM_MSECURE is an output.    Below is the complete list of corrections that will be made to

the data manual Ball Characteristics tables when the data manual is updated.

CBB Ball Table

I/O Type Corrections:

sys_drm_secure I => O

mcbsp3_dr O => I

husb3_tll_stp IO => I

husb3_tll_dir IO => O

husb3_tll_nxt IO => O

tv_out1 O => AO

tv_out2 O => AO

CBC Ball Table

Ball ID Corrections:

Bottom: AD7 Top: AA5  sys_nreswarm, gpio_30, safe_mode => Change top ball ID from AA5 to NA.

I/O Type Corrections:

husb3_tll_nxt IO => O

tv_vfb1 O => AO

tv_vfb2 O => AO

tv_vref I => AO

CUS Ball Table

I/O Type Corrections:

mcbsp3_dr O => I

Regards,

Michael T

Hi,

Can you please say why on Mistral EVM board the TPS65950 MSECURE H8 ball is connected to OMAP3530DCBBA K8 ball (GPIO_64).

It is also connected to OMAP3530 AF9 ball (SYS_DRM_MSECURE, GPIO_22) thru not-placed serial resistor.

Why do Mistral prefer to use GPIO_64 instead of GPIO_22?

Thanks,

Meir

Meir:

Normally GPIO64 is used to read the state of SYS_DRM_SECURE.  If the design is not using the SYS_DRM_SECURE signal, H8 can be used as a general-purpose I/O pin (GPIO22) by changing the pin mux setting.

regards,

Michael T

PS: Please mark this post as answered via the Verify Answer button below if you think it answers your question.  Thanks!

1.Do you mean that GPIO64 is used to read the state of TPS65950 MSECURE pin (and not OMAP SYS_DRM_SECURE) ?

2. Do you mean OMAP AF9 ball can be used as GPIO22 (and not H8 as written)?

Thanks for your help.

Meir.

Meir:

On our OMAP3530 processor module (Rev C) AF9 goes to a zero-ohm not-installed resistor.  If that resistor is installed it goes to GPIO_64 (K8).

Instead AF9 connects thru a zero-ohm resistor to ETK_D8.  The pin mux for AF9 by normally outputs the ETK_D8 signal.  AF9 can also be pin muxed

to be GPIO_22, but I don't see GPIO_22 used in our schematic.

Regards,

Michael T

PS: Please mark this post as answered via the Verify Answer button below if you think it answers your question.  Thanks!