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十八、遥控电路长虹C2919P彩电的遥控电路由CPUDQA1(TMP47C1638A4353)、存贮器DQA07(μPD6252)、开关量扩展电路DQB05(TC4094BP)、遥控发射器TC9028P、红外接收前置放大器CX20106A组成。各种功能控制较多,简介如下: DQA1⑨⑩脚输出加到DQB05②、③脚上,将两端输入转换成8端输出:DQB05④脚输出扫描速度调制开/关信号,低电平时开关接通高电平时断开;⑤脚输出扫描速度调制作用强弱信号,高电平时控制作用强;⑥脚输出环绕声控制信号,高电平无环绕声,低电平有环绕声;⑿脚输出定时开机和待机状态控制信号;⒀脚输出蓝背景控制开关信号;⒁脚输出制式状态控制
18, remote control circuit Changhong C2919P color TV remote control circuit by the CPUDQA1 (TMP47C1638A4353), memory DQA07 (μPD6252), digital expansion circuit DQB05 (TC4094BP), remote transmitter TC9028P, infrared receiver preamplifier CX20106A composition. DQA1 ⑨ ⑩ foot output added to DQB05 ②, ③ feet, the two ends of the input into 8-terminal output: DQB05 ④ feet output scan speed modulation on / off signal, the switch is turned on when the low power Normally open; ⑤ pin output scan speed modulation signal strength, high control when the strong effect; ⑥ foot output surround sound control signal, high level without surround sound, low level surround sound; ⑿ pin output timing boot and Standby state control signal; ⒀ pin output blue background control switch signal; ⒁ pin output mode state control