OMAP 3530 Boundary Scan

Christian12899

Other Parts Discussed in Thread: TPS65930, TMS320C6415, OMAP3530

I'm developing a JTAG Boundary scan test on a customer desgined board containing OMAP 3530 and TPS65930.
I'm able to do an infrastructure test that checks that the chain (TDI->OMAP->TPS->TDO) is ok, but when I'm trying to do a simple test that drives an I/O pin high and low on the OMAP nothing happens.

So my question is:

Do I have to set some pins on the OMAP to enable JTAG test (like EMU0/1)?
I know from other projects I been involved in that on some DSP:s like TMS320C6415 I have to pull EMU0 and EMU1 low to enable Boundary Scan test. I'm not able to figure that out from the documentation of the OMAP or the TPS.

Regards
/Christian

over 16 years ago

0 Murugan Mayileri over 16 years ago

Intellectual 390 points

Hi christian,

Can you share the answers for the above question?

Murugan

0 Christian12899 over 16 years ago in reply to Murugan Mayileri

Prodigy 20 points

Hi Murugan.

This is the answer I got from TI Support:

You are correct, the documentation is not complete and the Icepick bsdl/emualtion logic is a bit complex to initialize.

You will find attached a presentation which applies to OMAP3530 in term of initialization (make sure to follow the mentioned sequence).

You will also find additional information on the Icepick logic from:

http://www.elinux.org/OMAP3530_ICEPICK

Also note the ICEPICK emulator architecture, accessing the C64+ without Code composer Studio with Service Pack SR10 is not supported:

http://support.spectrumdigital.com/ccs33/Release-30329/TechNote_9.pdf

I havn't tried this so I don't know if this works.

/Christian

0 Murugan Mayileri over 16 years ago in reply to Christian12899

Intellectual 390 points

Hi Christian,

Thank you very much for your answer.

I am in the design stage of OMAP3530. So i need to take care all the points in my design.

To support ICEPICK mode, emu0 and emu1 pins of processor should be grounded correct? as well we need to support 20pin ARM JTAG connector correct?

Please let me know your answer.

Regards,

Murugan.M

0 BrandonAzbell over 16 years ago in reply to Murugan Mayileri

TI__Guru 64490 points

Murugan Mayileri said:

To support ICEPICK mode, emu0 and emu1 pins of processor should be grounded correct?

I would say no, you should not ground these signals. You should make sure these signals are pulled up.

Murugan Mayileri said:

as well we need to support 20pin ARM JTAG connector correct?

This is very likely dependent on the emulator you plan to use.

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OMAP 3530 Boundary Scan