LED driver circuit, corresponding device and method

A circuit includes a set of LED driver devices and a controller including a set of nodes coupled to a first slave address pin and a second slave address pin in each LED driver devices in the set of LED driver devices. Each LED driver device includes: a finite state machine (FSM) configured to generate LED drive PWM-modulated signal patterns; an oscillator configured to generate a clock signal forthe FSM; a first signal path activatable between the first slave address pin and the FSM; and a second signal path activatable between the FSM and the second slave address pin. 一种电路包括：成组LED驱动器设备；以及包括成组节点的控制器，成组节点被耦合到成组LED驱动器设备中的每个LED驱动器设备中的第一从地址引脚和第二从地址引脚。每个LED驱动器设备包括：有限状态机(FSM)，被配置为产生LED驱动PWM调制信号模式；振荡器，被配置为产生用于FSM的时钟信号；第一信号路径，能够在第一从地址引脚和FSM之间激活；以及第二信号路径，能够在FMS和第二从地址引脚之间激活。