14.4 SAM-BA Monitors

The ROM code embeds two distinct SAM-BA Monitors. Both transfer data through FLEXCOM0 USART. Most transfers, including all commands, exchange raw text, or small sequences of ASCII characters. However, bigger data transfers use the Xmodem protocol to improve the data integrity.

The communication is always initiated by the monitor client, likely the SAM-BA tool, which acts as the Host in the communication protocol between the target (PIC32CXMTx) and the Host computed.