Master chip, slave chip, and inter-chip DMA transmission system

摘要

The present disclosure relates to the technical field of a multi-chip system, and provides a master chip, a salve chip, and an inter-chip DMA transmission system. The master chip is connected to the slave chip through at least one first transmission channel (17) and a second transmission channel (18). The master chip includes a DMA controller (2) and an MCU (3). For each of the first transmission channels, when it is detected that any first transmission channel (17) is in an idle state, the MCU (3) configures one of a plurality of first peripherals (12) of the slave chip into a DMA mode. The DMA controller (2) is configured to receive, through the first transmission channel (17), a DMA request (req_s_0-req_s_N) generated by the first peripheral (12) in the DMA mode, and obtain a DMA data of the first peripheral (12) through the second transmission channel (18).