Patent ID: 11971446
Assignee: nan
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. The communication method of an interconnected die and an MPU according to claim 3, wherein the MPU controlling the data access between the slave devices through the DMA control interface comprises the following steps:
step 1: the MPU writes the configuration information of address information and data length of the data transmission into the exclusive address space of the DMA through the data interface;
step 2: after receiving the configuration information, the DMA control interface sends a read request event to the source slave device, and there is a specific event information flag in the read request event; the data returned from the slave device is returned to the destination slave device;
step 3: after receiving the read request event, the source slave device packs the data that needs to be read into a write data event and sends it to the destination slave device;
step 4: after receives the write data event, the destination slave device returns a write response event to the DMA control interface;
step 5: after receiving the write response event, the DMA control interface generates an interrupt pulse to inform the MPU that the data transmission is complete.