Silicon Labs USB Debug Adapter and other MCUs
Yes. Your device supports JTAG. You need to use the Silicon Labs IDE. You can find the JTAG informations from here http://www.silabs.com/Support%20Documents/TechnicalDocs/8-bit-USB-Debug-Adapter.pdf

But the problem is that this module will only allow to debug Silicon Labs micro controller. For using this debugger with Raspberry Pi or other such devices, you need a separate software. This is currently not available.