TMS570LC4357: EMU pullup

Alexis Maslyczyk

Hi everyone,

I am currently using a TMS570LC43 and I am implementing the MIPI-60pins connector for the XDS560v2 PRO TRACE.

In the Emulation and Trace Headers Technical Reference Page 22 it says EMU0 and EMU1 must be pull-up.

But if I take a look at the Hercules TMS570LC43x Development Kit , ETMDATA0 and ETMDATA1 are not pulled-up, and ETMD12 and 13 are pulled-up with a 10k.
Also there are no series resistors on EMUn (exept ETMD12,13,14,15).

If you have any ideas that could help.

Thank you

over 6 years ago

0 QJ Wang over 6 years ago

TI__Guru**** 201486 points

Hello Alexis,

TMS570LC43x doesn't have EMU signals. All the ETM signals except ETMTRACECLKIN are output signal and have internal pull-down during reset. If the signal trace is short enough, you don't have to use series resistor. But I recommend you add one series resistor to ETMTRACECLKOUT.

Please refer to TRM of emulation and trace headers:

http://www.ti.com/lit/ug/spru655i/spru655i.pdf

0 Alexis Maslyczyk over 6 years ago in reply to QJ Wang

Prodigy 30 points

Hello QJ Wang,
Thank you for your help.
And what about the two pullup on ETMD12 and 13?

0 QJ Wang over 6 years ago in reply to Alexis Maslyczyk

TI__Guru**** 201486 points

Hello Alexis,

Those pull-up are for EMIF BA[0] and nOE.

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TMS570LC4357: EMU pullup