TMS320-XDS100-V3 and MSP430-JTAG-TINY-V2 General Questions

[RB]

Thank you.


1. You wrote in the #11 post:

* * *

3. MSP430-JTAG-TINY-V2 has just one 20-pin cable that has both JTAG and SBW. It is important to pay attention to this picture since Olimex SBW layout differs from TI's:

* * *

We bought TMS320-XDS100-V3 and MSP430-JTAG-TINY-V2.

The MSP430-JTAG-TINY-V2 has one 14-pin (at both sides) JTAG cable in the box.

Sould be one another "SWB cable" additionaly in the MSP430-JTAG-TINY-V2 set?


2. Is it the TOP VIEW to the JTAG male connectors placed on the debuggers PCBs ?

Layout of available JTAG connectors: 2x7 TI JTAG, 2x10 TI JTAG; 2x10 ARM JTAG
https://www.olimex.com/Products/DSP/Emulators/TMS320-XDS100-V3/resources/JTAG_connectors_XDS100.pdf

MSP430-JTAG-TINY-V2 JTAG connector layout
https://www.olimex.com/Products/MSP430/_resources/msp430-jtag-tiny-v2-iso-mk2-layout.jpg

Or... is the view to the JTAG connectors those (females) on the cables?


3. The target of our design is going to be powered from the isolated +5V external power supply connected to the 220V AC mains.

There are two +3.3V and +1.8V LM1117 LDOs (for the TMS320 DSP) on the target PCB.

The TMS320-XDS100-V3 debugger is going to be powered from the Olimex USB-ISO isolator module.

We are going to use the TMS320-XDS100-V3 14-pin JTAG debugger connector to connect it to the 10-pin JTAG connector on the target board.

Should the TMS320-XDS100-V3 emulator jumper settings be changed (compared to the factory settings) for this  case described?

4. Do you have a right and ready schematic solution how to connect the TMS320-XDS100-V3 debugger with its 14-pin JTAG cable connector to the 10-pin JTAG connector on our target board?

The fragment of our target design is shown here:

https://prnt.sc/rRgRUpqphMv2

[LubOlimex]

1. No, I just made a mistake earlier saying it is 20-pin JTAG cable (as in ARM JTAG debuggers). It should be 14-pin JTAG cable and same cable can be used by both JTAG and SBW. The note for the SBW still applies tho - Olimex SBW layout differs from TI's.

2. These views of the connectors at the debuggers. It is not the cables. For the cables track each wire.

3. No. It should work by default. Make sure ARM_JTAG_E jumper is open (as it should by default)

4. No, this 10-pin connector is not according to the Texas specifications but names at that 10-pin connector have exact equivalent in our 14-pin JTAG connector, so it should be pretty easy to figure out (like tms is T_TMS and trst is T_TRST_N and so on). But what is your target exactly? Did you design it, if not maybe ask the original designer about such table.

[RB]

Thank you.


1. *2. These views of the connectors at the debuggers. It is not the cables. For the cables track each wire.*

Is it the TOP VIEW to the JTAG male connectors placed on the debuggers PCBs ?

The top view?


2. *But what is your target exactly? Did you design it, if not maybe ask the original designer about such table.*

We did not design the target.

But it is knownt that the design is working.

Designer is not abailable because he is passed away year ago.


3. There is a solution to move from 14 to 10 pins.

https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/632599/awr1642-how-to-connect-a-10-pin-or-14-pin-jtag
AWR1642: how to connect a 10 Pin or 14 Pin JTAG?

It is not straight and differs from the board we have.

You can see it comparing its schematics:

https://prnt.sc/rRgRUpqphMv2 (design)

https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/632599/awr1642-how-to-connect-a-10-pin-or-14-pin-jtag (solution)
 
There are no some reistors in our design compared to the solution, etc.

[LubOlimex]

1. Each plastic connector has a marking which is the first pin.

2. My condolences.

3. Good but also pay attention to the notes below. These resistors are not required at all.

[RB]

Thank you.


***
We have Summer vacation from
07 Aug 2023 to 18 Aug 2023
***

And you can answer here on this forum after 18/08/2023 only?


*These resistors are not required at all.*

Which resistors namely (positions according to that TI circuit solution)?

[LubOlimex]

I will probably answer after 21/08/2023 (since 18/08/2023 is Friday).

The resistors from the schematic you found in the forums, as the TI employee also said in his reply.

[RB]

OK.

Thank you.


Nice vacations!