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AFE58JD48EVM: What is the difference between the 2 TSW1400EVM firmwares for this AFE?

Part Number: AFE58JD48EVM
Other Parts Discussed in Thread: AFE58JD48

In HSDC pro v5.20, there are 2 choices for the firmware that appear to be for this AFE: AFE58JD48 and AFE58JD48_ADC_Firmware. When I use the first one, in the lower right of the GUI it says ADC_FIRMWARE_DPA_ENABLED. For the 2nd one, it just says ADC_FIRMWARE. Capture didn't work for me with the first one. I got a pop up saying something about DPA not being locked.

The term DPA is not mentioned in the user guide for either of these boards, the GUI help, or the datasheet for AFE58JD48. Where can I find documentation describing this? If that documentation doesn't exist, can you explain what this is?

I am using TSW1400EVM.

Thanks