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Multi-mode transmission output circuit

An output circuit, modal technology, used in static indicators, cathode ray tube indicators, instruments, etc., can solve the problems of increasing the cost, layout area and power consumption of display control chips.

Inactive Publication Date: 2015-09-30
MSTAR SOFTWARE R&D (SHENZHEN) LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This increases the cost, layout area and power consumption of the display control chip

Method used

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  • Multi-mode transmission output circuit
  • Multi-mode transmission output circuit
  • Multi-mode transmission output circuit

Examples

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Embodiment Construction

[0046] Please refer to figure 1 ; figure 1 Shown is a schematic circuit block diagram of an embodiment 10 of the transmission output circuit of the present invention. The transmission and output circuit 10 can be set in a chip as one of the building blocks of the chip's input and output circuits; A chip or circuit board, not shown in the figure 1 ), the signal to be output can be transmitted to the transmission output circuit 10 through the front drivers B2.2 and B2.3, and the transmission output circuit 10 will correspondingly output the actual drive signal to the external circuit. The transmission output circuit 10 of the present invention is a multi-mode transmission output circuit, which includes a pair of driving circuits FU3.1 and FU3.2, a pair of general-purpose circuits FU2.1 and FU2.2, and a pair of switching circuits FU4.1 and FU4.2, and two co-coupling circuits FU1 and FU5.

[0047] In the transmission output circuit 10, each switching circuit FU4.1 / FU4.2 is res...

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PUM

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Abstract

The invention discloses a multi-mode transmission output circuit which is provided with a pair of driving circuits and a pair of general circuits. An n-channel metal oxide semiconductor transistor is arranged in each driving circuit and a p-channel metal oxide semiconductor transistor is arranged in each general circuit. Under one transmission mode, one of the pair of the general circuits can be in complementary conduction with one of the pair of the driving circuits; and under another transmission mode, the pair of the general circuits can be consistently conducted for providing terminal resistance.

Description

technical field [0001] The present invention relates to a multi-mode transmission output circuit, in particular to a transmission mode that can control the conduction of a p-channel metal-oxide-semiconductor transistor to provide terminal resistance in the transmission mode that does not require a p-channel metal-oxide-semiconductor transistor current switch Transmit output circuit. Background technique [0002] In the chip, in addition to the main control chip and the core circuit that performs the functions of the chip, there are also input and output circuits, so that the core circuit can exchange signals and data with other circuits outside the chip through the input and output circuits. A transmission output circuit is provided in the I / O circuit to transmit the signal drive of the core circuit to the external circuit outside the chip. [0003] In order to correctly exchange signals / data between a chip and its external circuits, the I / O circuits of the chip and the ext...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G5/00
Inventor 施俊仰叶俊文刘先凤
Owner MSTAR SOFTWARE R&D (SHENZHEN) LTD
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