Control chip

A technology for controlling chips and logic circuits, applied in program control, electrical program control, general control systems, etc., can solve the problems of control chip package size and increase in production cost, and achieve the effect of reducing the number of pins

Active Publication Date: 2013-09-11
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the package size and production co

Method used

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Embodiment Construction

[0015] Certain terms are used throughout the description and claims to refer to particular components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. The "comprising" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". In addition, the term "coupled" herein includes any direct and indirect electrical connection means. Therefore, if it is described that a first device is coupled to a second device, it means that the first device may be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means.

[0016] figure 2 It is a schematic diagram illustra...

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Abstract

A control chip includes a configurable pin and a control logic. The configurable pin is arranged for coupling a first pin and a second pin of a high-definition multimedia interface (HDMI) connector. The control logic is arranged for controlling the configurable pin to switch between a first operation mode and a second operation mode. The configurable pin serves as an input pin when operating in the first operation mode, and the configurable pin serves as an output pin when operating in the second operation mode. For example, the input pin is arranged for receiving a power supply signal derived from a +5V power signal received by the first pin, and the output pin is arranged for outputting a control signal for controlling hot plug detection (HPD). The control chip provided by the invention can reduce the number of pins of the control chip.

Description

technical field [0001] The present invention relates to a control chip, in particular to a control chip that uses configurable pins to selectively function as input pins (for example, pins used to receive power supply signals for connection detection) or output pins. The control chip communicates with the wired connection interface through pins (for example, pins for outputting control signals for controlling hot plug detection). Background technique [0002] A high-definition multimedia interface (HDMI) is a small audio / video interface used to transmit digital data, such as an HDMI source device (e.g., set-top box, CD A player, a video game console or a personal computer) is connected to a high-resolution multimedia receiving device (HDMI sink device) (for example, a video projector, a TV or a computer monitor) through a high-definition multimedia interface cable (HDMI cable). Generally speaking, each of the HDMI source device and the HDMI sink device is provided with at l...

Claims

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Application Information

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IPC IPC(8): G05B19/04
CPCG05B19/0423G05B2219/25123G05B2219/21012G06F15/17343
Inventor 潘青谷冯怀元
Owner MEDIATEK INC
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