Data transmission controller and electronic system

A data transmission controller, comprising:

• a first master and a second master;
• a first slave and a second slave;
• a plurality of channels, configured to be coupled to the first master or the second master;
• a direct memory access (DMA) controller, configured to receive a plurality of first commands, to transmit the plurality of first commands to the corresponding channels for different data flow directions, and to transmit the plurality of first commands to the first master or the second master through the plurality of channels;
• a first command converter, configured to connect to the first slave and connect to the second master through the plurality of channels;
• and
• a second command converter, configured to connect to the second slave and connect to the first master through the plurality of channels,
• wherein the first command converter and the second command converter are configured to convert a plurality of original commands into a plurality of second commands in a direct memory access mode.