I'm wondering if any more details can be provided about EMU_CMD_READ_DCC. I'm working on integrating the J-Link into one of my academic projects, but the USB protocol documentation only describes EMU_CMD_WRITE_DCC (and not EMU_CMD_READ_DCC or EMU_CMD_WRITE_DCC_EX, which are mentioned as emulator capabilities in the document). Any more pointers would be appreciated!