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What is the functionality excluded if removed EMU0, EMU1 pins on XDS100v1 ?

Sang-il Nam

Expert 2530 points

Hi,

I have two questions about XDS100v1.

First of all, See below.

* XDS100v1's General features

- Support for “JTAG reset”/"wait-in-reset" boot-modes using the two EMU pins sampled by the nTRST pin.
- Support for “Power-on reset” boot-modes using the two EMU pins sampled by the TVD pin.
- Support for the configuration of the EMU pin features through Code Composer Studio™ Setup “connection properties” dialogs similar to those for the XDS560 Rev-D cable.
- Support for “target power-loss detection” via the TVD pin even when Code Composer Studio™ is not running, and applying boot-modes at Code Composer Studio™ start-up.

etc...

* XDS100v1's Own features

- Support for the following processors cores : TMS320C28x, TMS320C54x, TMS320C55x, TMS320C64x+, and TMS320C674x.

etc...

What is the functionality excluded if removed EMU0, EMU1 pins on XDS100v1.

In that case, Which processors cores does it support ?

over 15 years ago

0 Mariana over 15 years ago

TI__Mastermind 24340 points

If you are not using XDS100, you probably want the EMU pins to the header, they are used to determine the emulation state of the device (standard debug vs boundary scan mode) and are generally managed by the emulator, though you can have on board pull resistors with jumpers/switches to hold it in a particular emulation state. They are also used with some debugging features like RTDX and trace, so you may run into other debugger problems if the two EMU pins that are available are not properly connected.

Please see:

http://tiexpressdsp.com/index.php/JTAG_Connectors#Q:_What_are_the_EMU0.2F1_pins_used_for.3F

0 Sang-il Nam over 15 years ago in reply to Mariana

Expert 2530 points

Thank you for your quick response.

So, It does mean that if I remove EMU0, EMU1 pins connection from XDS100v1 reference schematic, then does not support the "wait-in-reset", "power-on-reset" boot modes ?

but, Does not changed that supported processor list of XDS100v1 reference ?

0 Mariana over 15 years ago in reply to Sang-il Nam

TI__Mastermind 24340 points

Nam, Sang-il said:
but, Does not changed that supported processor list of XDS100v1 reference ?

Indeed XDS100 does not have support for the EMU pins:

http://tiexpressdsp.com/index.php/XDS100#Features_NOT_supported.C2.A0

0 Steve2181 over 15 years ago in reply to Mariana

TI__Expert 4995 points

XDS100v1 does not support reading the EMU0/1 pins. however, it does support driving the EMU0/1 pins.

[edit] General Features

The Texas Instruments' reference design for both the XDS100v1 and XDS100v2 have the following features (Please check your vendor for hardware details):

Debug features (Emulation Connect/Disconnect, Read/Write memory, Read registers, Load program, Run, Halt, Step, Software and Hardware Breakpoint support, Real-Time Mode)
Compatible with Code Composer Studio™.
Support for targets with 1.8v and 3.3v IO voltages.
Support for “JTAG reset”/"wait-in-reset" boot-modes using the two EMU pins sampled by the nTRST pin.
Support for “Power-on reset” boot-modes using the two EMU pins sampled by the TVD pin.
Support for the configuration of the EMU pin features through Code Composer Studio™ Setup “connection properties” dialogs similar to those for the XDS560 Rev-D cable.
Support for “target power-loss detection” via the TVD pin even when Code Composer Studio™ is not running, and applying boot-modes at Code Composer Studio™ start-up.