LP-XDS110ET: Looking to build 20-Pin to 14-Pin Adapter

Erik Barron

Part Number: LP-XDS110ET
Other Parts Discussed in Thread: TMS320F2809

In order to supplement an XSD110 Debug Probe, I'm looking to configure a LP-XDS110ET to be able to flash to and debug a board that takes a standard TI 14-Pin JTAG connector. I tried pairing up the standard JTAG signals (TDI/TCO/TCK/TMS/nRST, plus Vcc and Gnd), and found that I was unable to flash from within Code Composer Studio. I then tried wiring up our existing Debug Probe pin for pin, and found that the board only successfully flashed when EMU0 was connected. Looking at the LP-XDS110ET's 20 pin output, I notice that there are no pins marked as EMU0/1, though we do have 3 GPIO pins and RX/TX lines. Are any of these configured to send out the EMU0 signal? If not by default, can they be made to send the signal?

10 months ago

0 Arthur R☑️ 10 months ago

TI__Mastermind 20569 points

Hi Erik,

What device are you trying to debug?

Could you please share your debug configuration as well (.ccxml from CCS project)? I am curious as we never have seen such an issue.

Regards,

Arthur

0 Erik Barron 10 months ago in reply to Arthur R☑️

Prodigy 20 points

I'm trying to debug a TMS320F2809.

Below is the debug configuration file

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<configurations XML_version="1.2" id="configurations_0">
                                    
    
    
    
    
    
    
    
    <configuration XML_version="1.2" id="Texas Instruments XDS110 USB Debug Probe_0">
                                                                        
        
        
        
        
        
        
        
        <instance XML_version="1.2" desc="Texas Instruments XDS110 USB Debug Probe_0" href="connections/TIXDS110_Connection.xml" id="Texas Instruments XDS110 USB Debug Probe_0" xml="TIXDS110_Connection.xml" xmlpath="connections"/>
                                                                        
        
        
        
        
        
        
        
        <connection XML_version="1.2" id="Texas Instruments XDS110 USB Debug Probe_0">
                                                                                                            
            
            
            
            
            
            
            
            <instance XML_version="1.2" href="drivers/tixds510c28x.xml" id="drivers" xml="tixds510c28x.xml" xmlpath="drivers"/>
                                                                                                            
            
            
            
            
            
            
            
            <property Type="choicelist" Value="0" id="The JTAG TCLK Frequency (MHz)">
                                                                                                                                
                
                
                
                
                
                
                <choice Name="Fixed with user specified value" value="SPECIFIC">
                                                                                                                                                                
                    
                    
                    
                    
                    
                    
                    <property Type="stringfield" Value="100kHz" id="-- Enter a value from 100.0kHz to 2.5MHz"/>
                                                                                                                                                            
                
                
                
                
                
                
                </choice>
                                                                                                                            
            
            
            
            
            
            
            </property>
                                                                                                
            
            
            
            
            
            
            <property Type="choicelist" Value="0" id="Power Selection">
                                                
                
                <choice Name="Target supplied power" value="0">
                                                            
                    
                    <property Type="choicelist" Value="0" id="Voltage Selection"/>
                                                        
                
                </choice>
                                            
            
            </property>
                                    
            
            <property Type="choicelist" Value="0" id="Debug Probe Selection">
                                
                <choice Name="Select by serial number" value="0">
                                        
                    <property Type="stringfield" Value="0" id="-- Enter the serial number"/>
                                    
                </choice>
                            
            </property>
                        
            <platform XML_version="1.2" id="platform_0">
                                                                                                                                                
                
                
                
                
                
                
                
                <instance XML_version="1.2" desc="TMS320F2809_0" href="devices/f2809.xml" id="TMS320F2809_0" xml="f2809.xml" xmlpath="devices"/>
                                                                                                                                            
            
            
            
            
            
            
            
            </platform>
                                                                                                        
        
        
        
        
        
        
        
        </connection>
                                                                    
    
    
    
    
    
    
    
    </configuration>
                                







</configurations>

0 Arthur R☑️ 10 months ago in reply to Erik Barron

TI__Mastermind 20569 points

Hi Erik,

I am going to forward that thread to the C2000 team, but from what I see here: https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/94394/f28335-jtag-emu0-emu1-pull-up-register

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1288888/tms320f2800137-xds110-not-able-to-program-device/4890932#4890932

you might have to place pull-up resistors on the EMU lines of your pin adapter.

The reason we have not seen that behaviour is that this LP-XDS110ET was made mainly for TI SimpleLink devices, which do not use those pins.

I will also link to that app note on C2000 JTAG debugging: https://www.ti.com/lit/an/spracf0b/spracf0b.pdf

Regards,

Arthur

Sub-1 GHz

Sub-1 GHz forum

LP-XDS110ET: Looking to build 20-Pin to 14-Pin Adapter