Design method of conversion circuit for converting parallel data into serial data

Abstract

The invention discloses a conversion interface circuit for converting parallel data into serial data, which is suitable for a design method of an asynchronous circuit, reduces the number of control signals so as to reduce the difficulty of time sequence design, and reduces the number of used devices at the same conversion speed, so that the power consumption of the circuit is lower. The embodimentof the invention provides a conversion interface circuit for converting parallel data into serial data. The conversion interface circuit comprises a clock signal frequency reduction module, a switchcontrol signal module and a switch module, wherein the clock signal frequency reduction module is used for reducing the frequency of an input clock signal to a half of the original frequency and thenoutputting the clock signal; the switch control signal module is provided with a plurality of output ends which are coupled with the switch control ends of the switch module in a one-to-one correspondence manner; the switch control signal module is used for dividing the clock signal output by the clock signal frequency reduction module according to a reset signal, generating a plurality of switchpulse signals and outputting the switch pulse signals to respective coupled switch modules; the switch module is used for serializing data signals in the input parallel data signals and then outputting the serialized data signals according to the switch control signals generated by the switch control signal module. In the switch module, the number of the transmission gates is equal to the number of data bits needing parallel transmission.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a conversion circuit from parallel data to serial data. Background technique [0002] At present, data transmission methods include serial data transmission and parallel data transmission. Serial data transmission is to transmit the code elements that make up data and characters bit by bit in time sequence, and parallel data transmission is to transmit fixed-digit data and character code elements. Simultaneously transmitted to the receiving end. Parallel-to-serial conversion is a technology to complete the conversion between these two transmission methods. The parallel-to-serial conversion circuit in the prior art utilizes a plurality of flip-flops connected in series to form a shift register for parallel-to-serial conversion. Such as figure 1 The parallel-to-serial conversion circuit shown includes four flip-flops 01, the input end of the first flip-flop 1 is D[3],...

AI Technical Summary

Problems solved by technology

However, the design of multiple flip-flops in series and controlled by a clock pulse belongs to the design method of synchronous circuits, which is not suitable for asynchronous circuits, and requires an additional control signal EN, which increases the complexity and cost of circuit

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