A kind of soc chip and method for reading data

Abstract

The present invention proposes a SoC chip, comprising: a DRAM control unit, a plurality of hosts, a read command management unit and a read data control unit; the read command management unit is used to receive the first read commands sent by all hosts; In the read command, determine the read command set corresponding to each host; forward all the second read commands in each read command set to the DRAM control unit in sequence according to the receiving time of the second read command, for the DRAM control unit according to the first The second read command feeds back the corresponding read data to the read data control unit; the read data control unit is used to receive the read data; according to the receiving time of the second read command, the read data corresponding to each second read command is sequentially forwarded to each The host corresponding to the second read command. The invention also discloses a method for reading data. By implementing the scheme, data transmission control with maximum efficiency can be realized with minimum resources, and the cost and power consumption of SoC can be effectively reduced.

Description

technical field [0001] The invention relates to the field of chip technology, in particular to a SoC chip and a method for reading data. Background technique [0002] In SoC (System on Chip, system-on-chip), in order to ensure that the host accesses DRAM (Dynamic Random Access Memory, dynamic random access memory) without errors, it is necessary to ensure that the data returned in the read DRAM of the same host is sent in the same order as the read command The order is consistent, but there is no order guarantee requirement for read access between different hosts. Each independent host is assigned its own read command BUFFER (buffer register) and read data BUFFER, and the read data of each host is returned independently without affecting each other; A single host uses a dedicated read data BUFFER to cache all the corresponding data for read transfers, and then returns the read data in the order of the read commands. [0003] In order to ensure the read transmission order of...

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Problems solved by technology

[0004] The present invention proposes a data reading method, device, and computer-readable storage medium to solve the problem in the prior art that a read command BUFFER and a read data BUFFER are set for each host in the SoC, resulting in an excessively high cost of the SoC

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