A serial port baud rate adaptive receiver, implementation method, and system
A technology of baud rate and receiving end, which is applied in the field of data communication, can solve problems such as the inconvenience of serial communication equipment, and achieve the effect of improving flexibility and versatility
Active Publication Date: 2021-06-08
上海灵动微电子股份有限公司
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Problems solved by technology
In communication, only when the baud rate of both parties is the same can the normal communication be ensured, which brings inconvenience to the use of serial communication equipment, especially when the baud rate of one party is unknown to the other party
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[0051] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
[0052] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude one or more other Presence or addition of characteristics, wholes, steps, operations, elements, components and / or collections.
[0053] In order ...
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The invention provides a serial port baud rate self-adaptive receiving end, an implementation method, and a system. The receiving end includes: the serial port receiving port receives the signal waveform sent by the sending end; Edge detection and detection of the pulse width between two adjacent target edges; the data shift register performs a shift operation so that the pulse width between the two target edges conforms to the preset number of bits; the baud rate automatic calculator is based on two The pulse width of the target edge is calculated to obtain the baud rate result when the sending end transmits data; the baud rate generator generates a receiving baud rate that matches the received signal according to the baud rate result; the receiving shift register is based on the received baud rate With the same baud rate, the signal waveform sent by the sending end is received and passed to the processor. The invention realizes the self-adaptation of the baud rate of the serial port communication at the receiving end, and improves the flexibility and universality of the serial port communication.
Description
technical field [0001] The invention relates to the technical field of data communication, in particular to a serial port baud rate self-adaptive receiving end, an implementation method and a system. Background technique [0002] In the information society, the application of information technology is becoming more and more extensive. However, how to ensure the security of information in transmission has become a hot spot and trend of social research. Information encryption is a key factor and an effective method to ensure information security. [0003] Because of its low cost and easy implementation, serial port communication is a common communication mode in embedded systems. In serial communication, "baud rate" is the unit used to describe the communication speed. In communication, only when the baud rate of both parties is the same can the normal communication be ensured, which brings inconvenience to the use of serial communication equipment, especially when the baud ...
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IPC IPC(8): G06F13/38G06F13/42
CPCG06F13/385G06F13/4282
Inventor 张波吴忠洁
Owner 上海灵动微电子股份有限公司