ViewSonic VG2021m-1 Service Manual page 30

4. Use ISP to program MCU
4.1 elect MTV type first, load the binary or Intel hex file that you want to program into the MCU, and select
¡§Auto¡¨ item, then press ¡§RUN¡¨ button, see Fig 4.1.
4.2 f user changes the MTV type, it must load file again, or the buffer of load file will be cleared.
4.3 RC (cyclic redundancy check): the host can check CRC register¡¦s result instead of reading every byte in flash.
The message of Check MCU CRC OK means that the Host verify ok for the progress of program.
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Fig 4.1
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VG2021m-1