A few test points covering the USB interface block have been placed on the AT32UC3L-EK for the verification of important signals.
| Designation | Feature |
|---|---|
| TP31 | VBUS |
| TP32 | D- |
| TP33 | D+ |
| TP34 | GND |
| TP35 | JTAG.TCK.UC3B |
| TP36 | JTAG.TDO.UC3B |
| TP37 | JTAG.TMS.UC3B |
| TP38 | JTAG.TDI.UC3B |
| TP39 | RESET_N.UC3B |
| TP41 | USB MODE pushbutton state |
To locate the test points mentioned here above, use the assembly top/bottom views provided within the AT32UC3L-EK schematics package.