Jtag Connector - Cherry Theobroma PX30-mQ7 User Manual

3.20 JTAG Connector

The board provides UPDI signals on the JTAG connector. The PX30-uQ7 does not support JTAG, but the ATtiny (see Section
11.4.5 Companion Controller 2) can be flashed over JTAG connector pins.
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Fig. 3.18: MISC header
Fig. 3.19: JTAG header
JTAG header Function
TDI UPDI-TX
TDO UPDI-RX