Control module and related control chip and identification method

Abstract

A control module includes multiple switch devices coupled to the power supplier via corresponding resistors, among which, the resistance values of all the corresponding resistors are different from the combined equivalent resistance values and said switches generate input current based on their operation states, a control chip with input / output lead pins coupled to the multiple switches and an identifying unit for identifying the operation state of the switches based on the input current and the control unit carries out corresponding logic operation.

Description

technical field [0001] The present invention relates to a device and method for identifying the operating states of multiple switching devices through a single pin, in particular to a method for identifying the operating states of multiple switching devices applied to a control panel of consumer electronics Devices and methods. Background technique [0002] Due to the recent evolution of the semiconductor industry, the fabrication of chips has become increasingly complex. Due to the improvement of process technology, the number of logic gates that can be fabricated per unit area is also increasing. The functions that required multiple chips in the past may be integrated into one chip by the current technology, which is the so-called system-on-a-chip (SOC) concept. However, the more functions are integrated into a single chip, the larger the area of ​​the chip may become. The larger the area of ​​the chip, the higher the cost of the chip. In addition, the input and output...

AI Technical Summary

Problems solved by technology

With the advancement of semiconductor technology, not only the chip has more and more functions, but also the required input or output signals increase. When the control chip 10 requires too many pins 14, the chip area may be wasted. lead to an increase in chip cost

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