The OP8666 uses on-board ICP (XDS100V2 Emulator) for programming and debugging using the ICP USB connector.
The XDS100V2 programs the microcontroller via the JTAG debug port.
The emulator also provides a USB to UART adapter functionality to use as Virtual Com Port for monitoring purposes.
Connections with Microcontroller
STLINK Function | Controller Pin Name | Controller Pin |
JTAG_TRSTN | TRSTN | V14 |
JTAG_TCK | TCK | V15 |
JTAG_TDI | TDI | W13 |
JTAG_TMS | TMS | W14 |
JTAG_TDO | TDO | W15 |
Virtual Com Port RX | GPIO28 / SCIA_RXD | V11 |
Virtual Com Port TX | GPIO29 / SCIA_TXD | W11 |