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Signal input circuit, method and chip with signal input circuit

A technology of signal input circuit and signal output terminal, applied in the direction of logic circuit interface device, logic circuit connection/interface layout, electronic switch, etc., can solve the problem of pin waste and achieve the effect of saving pins

Inactive Publication Date: 2014-07-16
MAISHI ELECTRONICS (SHANGHAI) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, using existing technologies such as figure 1 When the signal is input into the circuit, each working mode signal in the chip occupies a separate pin, which will lead to waste of pins, especially when the pins of the chip are tight

Method used

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  • Signal input circuit, method and chip with signal input circuit
  • Signal input circuit, method and chip with signal input circuit
  • Signal input circuit, method and chip with signal input circuit

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Embodiment Construction

[0026] Embodiments of the present invention will be described below with reference to the drawings. Elements and features described in one drawing or one embodiment of the present invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that representation and description of components and processes that are not related to the present invention and known to those of ordinary skill in the art are omitted from the drawings and descriptions for the purpose of clarity.

[0027] In the embodiment of the present invention, pins of chips using the signal input circuit are saved by sharing part of the signal input terminals of the signal input circuit.

[0028] figure 2 A schematic block diagram of a signal input circuit according to an embodiment of the present invention is shown. Such as figure 2As shown, the signal input circuit 200 includes: a control signal input terminal 201 for receiving a control signal Co...

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Abstract

The invention discloses a signal input circuit, a method and a chip with the signal input circuit. The signal input circuit includes: a control signal input terminal, for receiving a control signal; at least one common signal input terminal, each for receiving a corresponding common signal; at least one first signal output terminal, each for outputting a corresponding First signal; at least one first signal unit, each first signal unit includes a latch, and each latch receives and outputs a corresponding common signal as the first signal under the control of the control signal; at least one second signal Output terminals, each for outputting a corresponding second signal; and at least one second signal unit, each second signal unit receives and outputs a corresponding common signal as the second signal under the control of the control signal.

Description

technical field [0001] The present invention generally relates to the field of integrated circuit chips, and more specifically relates to a signal input circuit and method and a chip with a signal input circuit. Background technique [0002] In an integrated circuit chip (hereinafter referred to as a chip), various signals such as power supply signals, operating mode signals, function signals, etc. Flow into the corresponding signal processing components in the chip. When the chip has multiple working modes, multiple working mode signals are needed, and the multiple working modes are indicated by the combination of the multiple working mode signals. [0003] In existing chips, usually separate working mode pins are used to input working mode signals, that is, each working mode signal occupies one pin. figure 1 A schematic block diagram showing a signal input circuit in a prior art chip. exist figure 1 Among them, the signal input circuit 100 includes J working mode signa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K19/0175G01S19/13
CPCH03K19/017509G01S19/35H03K19/0175H03K17/00
Inventor 张卫华喻梅
Owner MAISHI ELECTRONICS (SHANGHAI) LTD