The invention relates to a variable length coding circuit, which belongs to the address coding technology of wireless remote control transmitting data. Including the D trigger mode selection module, counter module, address input and high level pulse generating module, which is characterized in that: the high level pulse generating module, mode selection module, the counter and the address input module are the logical connection, the high level pulse generating module of the output signal of CLR C and rSt signal or non operation after a D trigger is connected with the end of CLR, and a CLR S01 signal and CLR C signal or non operation and two D flip-flop CLR connected to the rest of the D trigger CLR connected rSt inverting the output signal, the D trigger circuit for Q output signal end. It uses a simple circuit structure to achieve 20 bit, 22 bit, 23 bit and 24 bit address encoding, and reduces the chip area, and reduce the encoding repetition rate, the circuit can be used in wireless remote control encoding chip, used in the field of all kinds of anti-theft devices, remote control, remote control toys industry etc..
【技术实现步骤摘要】
【技术保护点】
一种可变长度编码电路,包括D触发器,模式选择模块,计数器,地址输入模块和高电平脉冲产生模块,其特征在于:高电平脉冲产生模块,模式选择模块,计数器和地址输入模块分别逻辑连接,所述高电平脉冲产生模块的输出信号clr_c与rSt_信号或非运算后与一D触发器的CLR端相连,同时一clr_S01信号和clr_c信号或非运算后与两个D触发器的CLR端相连,其余D触发器的CLR端连接rSt_反相后的输出信号,所述D触发器的Q端为电路信号的输出端,所述模式选择择模块包含两个输入端SEL0和SEL1。
【技术特征摘要】
【专利技术属性】
技术研发人员:江猛,谢卫国,袁翔,江石根,李小安,
申请(专利权)人:苏州市华芯微电子有限公司,
类型:实用新型
国别省市:32[中国|江苏]
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