Communication system and method on basis of double-speed synchronous dynamic random access memory interface

A technology of double-speed synchronization and memory interface, which is applied in the direction of instruments and electrical digital data processing, etc., can solve the problems of USB technology communication interface barriers, transmission technology powerlessness, and difficulty exceeding 200Mbps, so as to simplify and delete interface signals and improve effective Effects of transmission bandwidth and design cost reduction

Active Publication Date: 2014-10-22
LEADCORE TECH
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Problems solved by technology

[0003] Although USB interface technology has been widely used on PCs, for mobile terminals, due to the complexity of software transplantation and the huge workload of software development, it often makes an AP and CP data transmission communication due to software problems. Slow or even delayed, the software complexity of USB technology has caused a huge obstacle for it as a communication interface between high-speed CP and AP; in addition, although the theoretical bandwidth of USB2.0 high speed is as high as 480Mbps, due to protocol overhead and system software design Influence, usually its actual effective bandwidth is difficult to exceed 200Mbps
[0004] Due to the basic principle o

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  • Communication system and method on basis of double-speed synchronous dynamic random access memory interface
  • Communication system and method on basis of double-speed synchronous dynamic random access memory interface
  • Communication system and method on basis of double-speed synchronous dynamic random access memory interface

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Embodiment Construction

[0050] In order to make the object, technical solution and advantages of the present invention clearer, various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0051] The first embodiment of the present invention relates to a communication system based on double rate synchronous dynamic random access memory interface, such as figure 1 As shown, the system includes: a master controller and a slave controller; the master controller communicates with the slave controller through a sim...

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Abstract

The invention relates to a mobile terminal and discloses a communication system and method on the basis of a double-speed synchronous dynamic random access memory interface. A master controller of the communication system is communicated with a slave controller through the simple double-speed synchronous dynamic random access memory interface. The double-speed synchronous dynamic random access memory interface comprises six signal lines, chip-selection signals (CS#), positive time clock signals (CK), negative clock signals (CK#), read-write selection signals (WE#) are output signals in the master controller and input signals in the slave controller, digital signals (DQ) and data strobe pulse signals (DQS) are input and output signals, the DQS and the CK are same in frequency, and the upper and lower edges of the DQS are used for data transmission. High-speed data transmission can be realized by only six signals lines, the master controller and the slave controller are respectively used for a baseband communication processor and an application processor, and the problems that a conventional UART (universal asynchronous receiver/transmitter) interface is low in transmission speed and USB (universal serial bus) software development and transplant are too complicated are solved.

Description

technical field [0001] The present invention relates to a mobile terminal, in particular to a communication system and method for realizing a simplified double-rate synchronous dynamic random access (SDDR) interface for high-speed data transmission between an application processor (AP) and a baseband communication processor (CP). Background technique [0002] With the rapid development of mobile communication technology, from the previous 2G to the current 3G, especially the 4G LTE broadband wireless communication technology that will be commercialized in the near future, the uplink and downlink transmission rate of wireless data has been rapidly increased, and the downlink transmission speed requirement has changed from the original The level of several Mbps to hundreds of Mbps, and the uplink transmission speed has also reached the level of several Mbps to tens of Mbps. In the 2G era, the traditional communication technology that uses the standard RS232 asynchronous serial...

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Application Information

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IPC IPC(8): G06F13/16
Inventor 史公正谢远鹏管华军
Owner LEADCORE TECH
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