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Chip terminating device in semiconductor IC and controlling method thereof

A technology of integrated circuits and termination devices, which is applied in the field of circuits controlling the chip termination devices, and can solve problems such as complex circuits

Inactive Publication Date: 2007-10-03
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, a semiconductor chip with a die-terminated device requires a complex circuit for controlling the die-terminated device by receiving an external signal and converting the signal into an internal signal

Method used

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  • Chip terminating device in semiconductor IC and controlling method thereof
  • Chip terminating device in semiconductor IC and controlling method thereof
  • Chip terminating device in semiconductor IC and controlling method thereof

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Embodiment Construction

[0025] In order to better understand the present invention, before describing preferred embodiments of the present invention with reference to the accompanying drawings, the concept of the present invention will be briefly described.

[0026] Several semiconductor chips can be configured to output or receive data via the same pin, that is, the same pin is shared by multiple semiconductor chips for input / output data. This pin is called a bidirectional input / output pin. A semiconductor chip including at least one bidirectional input / output pin (or bidirectional I / O unit) requires an output enable signal OE to turn on an output driver only when outputting data. In the present invention, the chip termination device is arranged to be turned on / off in response to an output enable signal OE used in a semiconductor chip with at least one bidirectional input / output unit.

[0027] FIG. 2 is a circuit diagram of a semiconductor chip 200 with a chip termination device according to a firs...

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Abstract

The present invention provides an on-chip termination apparatus in a semiconductor integrated circuit, and a method for controlling the same. The on-chip termination apparatus is installed in a semiconductor integrated circuit that has an output driver for outputting data to the outside via a pad and a data input circuit for receiving data from the outside via the pad. The on-chip termination apparatus includes an on-chip terminator including at least one terminal resistor electrically connected to the pad; and a terminator control circuit for turning on or off the on-chip terminator in response to an output enable signal that enables or disables the data output circuit, wherein the terminator control circuit turns off the on-chip terminator in the event that the data output circuit is enabled. Therefore, the on-chip termination apparatus is controlled by an output enable signal, thereby reducing timing loss, thus enabling a system to operate at high speed.

Description

[0001] priority [0002] This application claims the priority of the application with the designated serial number 2002-21684 and the title "ON-CHIP TERMINATION APPARATUS IN SEMICONDUCTORINTEGRATED CIRCUIT, AND METHOD FOR CONTROLLINGTHE SAME" filed with the Korean Industrial Property Office on April 19, 2002, the content of which is cited For reference. technical field [0003] The present invention relates to a semiconductor integrated circuit, in particular to a chip terminal device capable of terminating a transmission line in a semiconductor integrated circuit, and a circuit and method for controlling the chip terminal device. Background technique [0004] In summary, when data signals are transmitted between circuit devices at high speeds, reflections of the data signals occur if the impedances of the devices are not matched. Therefore, the information signal exchange system needs a termination resistor capable of terminating the bus to achieve ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L23/50H01L23/52H01L27/00G06F3/00G11C11/40H03K19/0175H03K19/0185H04L25/02
CPCH04L25/0278H03K19/018592G11C11/40
Inventor 宋镐永张星珍
Owner SAMSUNG ELECTRONICS CO LTD