TSW1400EVM: TSW1400EVM

young kim

Part Number: TSW1400EVM

Hi,

I have two questions;

1. I connected DAC5682ZEVM to TSW1400EVM. After power up I had JTAG_CHAIN_BROKEN_ERROR. I verified that R55 was removed on the back of the board. Therefore some other thing is causing this problem.

2. Which DAC firmware should I load for DAC5682Z?

Thanks,

Young,

over 7 years ago

0 Ken C over 7 years ago

TI__Genius 12965 points

Young,

Do you get this error when you load firmware? Can you please check that your 5V supply for the TSW1400 is rated to 3A? We have seen some issues where the current is not enough on the supply.

In HSDC Pro DAC tab, select the DAC5682z in the device drop down. You can have a look at the HSDC Pro users guide. There are a couple of examples of how to configure the HSDC Pro settings for TSW1400+DAC.

Ken

0 young kim over 7 years ago in reply to Ken C

Prodigy 100 points

Hi Ken,

Power supply has no problem. I measured all the voltages on the board as well. They were all fine.
After I selected DAC5682Z from GUI it asked me 'Do you want to update the firmware for DAC?' Once I click 'yes' then that JTAG error message popped up.

Another question is there are collection of firmwares in installed directory 'C:\Program Files (x86)\Texas Instruments\High Speed Data Converter Pro\1400 Details\Firmware'. But I don't see which RBF file belongs to DAC5682Z.

Young,

0 Ken C over 7 years ago in reply to young kim

TI__Genius 12965 points

Hi Young,

The issue with the power supply is that when it loads the firmware there is a brief current spike and this usually causes supplies to limit which resets the FPGA which then goes back to low current draw as if no firmware is loaded. Measuring static supplies won't tell you if it reset because it will read 5V. If you can ensure the source is capable of supplying 5V up to 3A then you should be ok and it won't be affected by this current spike.

If you look at the DAC files folder, the DAC5682z ini file uses the DAC_SAMPLE_WISE firmware.

You can also try loading this firmware manually by going to Instrument options, download firmware.

Ken

0 young kim over 7 years ago in reply to Ken C

Prodigy 100 points

Hi Ken,

I have an extra computer power supply. Maximum current out from that for 5V is 28A. So I tried with that and result is the same. I still have an error. I put the scope probe on 5V line to capture any collapse in that moment. But 5V line was absolutely solid and not affected by that at all.

I don't think it related with the power supply. Is there any jumper or switch setting required?
Young,

0 young kim over 7 years ago in reply to young kim

Prodigy 100 points

Hi Ken,

I tried again this morning and surprisingly I could be able to download the firmware. I don't know why, though. I am using my original power supply. Now it works every time.

Any way thanks for your help.

Young,

0 young kim over 7 years ago in reply to young kim

Prodigy 100 points

Hi Ken,

Although I can program TSW1400 without any issue now, I still have a problem to test DAC5682ZEVM.

1. It doesn’t always generate the output waveform on J3 (IOUT_A2). I have to re-cycle the power, download again and (or) press reset button to get the waveform.

2. Output waveform is very distorted.

I have configured the DAC5682z EVM to evaluate the DAC outputs. I made the following changes as specified in user guide;

1. R137, R153, R155 and R156 need to be uninstalled
2. R109, R134, R135 and R136 need to be installed

I also installed 1GHz VCXO for U6 on the board.

I generated the ramp pattern signal from excel but actual output waveform wasn’t that great. I’d like to attach the OSC waveform. Please let me know how to do it.
Is there any document for testing a TSW1400 EVM with a DAC5682ZEVM?
Thanks,
Young,

0 young kim over 7 years ago in reply to Ken C

Prodigy 100 points

Hi Ken,

I couldn't get DAC5682 working. Please review the attached doc and provide me your advice.

Thanks,

Young,ti_forum.docx

0 Neeraj Gill over 7 years ago in reply to young kim

TI__Mastermind 20541 points

HI Young,

Once the dac is all setup and you are able to output a signal try changing sync source to soft sync and then toggling the software sync button on the gui. I have attached picture.

Regards,

Neeraj Gill

0 young kim over 7 years ago in reply to Neeraj Gill

Prodigy 100 points

Hi Neeraj,

I tried software sync but result was the same. I didn't see any improvement on analog waveform. Do I need calibration or something like that?
Is there any way to verify whether this DAC5682ZEVM hardware is working or not?
Thanks,
Young,

0 young kim over 7 years ago in reply to young kim

Prodigy 100 points

Hi Neeraj,

I tried with KCU105 first but I couldn't get it working. Therefore I orderer TSW1400EVM. And I still cannot make it working.
Can you give me some suggestion how to verify DAC5682ZEVM hardware?
Thanks,
Young,

0 Neeraj Gill over 7 years ago in reply to young kim

TI__Mastermind 20541 points

Hi,

Can you please try the following?

The steps described in this section show how to connect and configure the DAC5681/81z/82z EVM for

evaluation under the default settings.

1. Connect the DAC5681/81z/82z EVM SEMTEK connector to a digital test pattern generator that

supports this interface such as Texas Instruments TSW1400.

2. Connect the 1.8-V (J14/J15) and 3.3-V (J17/J18) power supplies. Ensure that each supply is not drawing more than 1-A of

current.

3. Provide a single-ended, 1-Vrms, 0-V, offset sine-wave signal to the EVM EXT_VCXO_P (J6) SMA

connector. LED D1 should illuminate indicating that a signal has been detected. If not, verify that the

correct signal is being provided.

5. Connect one end of the supplied USB cable to an available USB port on the host PC. Connect the

other end of the cable to J13 on the EVM.

6. Open the DAC5682z EVM software. The DAC software detects if the USB port is active and if it is

capable of reading the EVM serial number. The EVM Home menu (Figure 9 and Table 6) of the

DAC8652z GUI software provides this status information.

7. Program the CDCM7005 and DAC registers as necessary. An example configuration file is included

under the installation folder: C:\Program Files\Texas Instruments\DAC5682z\DAC5682z Configuration

Files\

8. Program and run the pattern generator. If using the TSW1400, see the user's guide for more

information on how to set up a digital pattern.

9. Analyze the DAC output using an spectrum analyzer.

Please note in following setup we are not using the pll of dac and are using the external clock signal so please modify the jumper setting accordingly. I have also attached the config file to this post. Please load the config file and try to see if the setup works.

Regards,

Neeraj Gill

DAC5681z.txt

DAC5681z_CDCM7005.txt

005FF1F0
00282AFD
D02800A2
00000027

0 young kim over 7 years ago in reply to Neeraj Gill

Prodigy 100 points

Hi Neeraj,

Please review the attached file. Waveform is ugly and I couldn't make it any better. Could you check if GUI set is all right?

Thanks,

Young,

ti_forum_2.docx

0 young kim over 7 years ago in reply to Neeraj Gill

Prodigy 100 points

Hi Neeraj,
Thanks for providing me the detail testing procedure. Just one question. I already installed the 1GHz VCXO for internal VCXO and it seems to be working. Do I have to use external VCXO?

Regards,
Young,

0 Neeraj Gill over 7 years ago in reply to young kim

TI__Mastermind 20541 points

Hi Young,

if the it is working fine than use the internal vcxo.

Regards,

Neeraj Gill

Data converters

Data converters forum

TSW1400EVM: TSW1400EVM