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Semiconductor capable of preventing generating multiple reflection, and driving and setting method

A semiconductor and driver technology, which is applied to semiconductor devices, transmission line coupling devices, transistors, etc., can solve the problems of increasing the production cost of semiconductor devices and increasing the manufacturing process of semiconductor devices.

Inactive Publication Date: 2003-03-12
PS4 LUXCO SARL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, such a termination resistor increases the manufacturing process of the semiconductor device, thereby increasing the production cost of the semiconductor device

Method used

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  • Semiconductor capable of preventing generating multiple reflection, and driving and setting method
  • Semiconductor capable of preventing generating multiple reflection, and driving and setting method
  • Semiconductor capable of preventing generating multiple reflection, and driving and setting method

Examples

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Embodiment Construction

[0030] Referring to FIGS. 1 to 5, a related semiconductor device will first be described for better understanding of the present invention.

[0031] In FIG. 1, the related semiconductor device includes a driver (or a driving device) 11, a receiver (or a receiving device) 12, and a transmission line (or a bus) 13 connecting the driver 11 to the receiver 12.

[0032] The driver 11 and the receiver 12 each include a CMOS inverter having a p-channel MOS transistor and an n-channel MOS transistor. The transmission line 13 contains, for example, an aluminum wire.

[0033] If the driver 11 is an ideal linear driver, its output impedance Zout is shown in FIG. 2 . That is, the output impedance Zout can be regarded as a fixed resistor having a resistance Rout independent of the output level (or voltage) Vout. At this time, an ideal equivalent circuit of the semiconductor device in FIG. 1 is shown in FIG. 3A.

[0034] When the output impedance Zout (=Rout) of the driver 11 is equal to...

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Abstract

A semiconductor apparatus comprises a resistor formed in a driver to connect a driving device to a transmission line connecting the driver to a receiver. The resistor has resistance considerably larger than on-state resistance of the driving device on condition that the resistor matches output impedance of the driver with impedance of the transmission line. The transmission line has length decided so that a reflected wave from a receiver-side end of the transmission line reaches the driver while a driving signal supplied to the driver has a logical high or low level.

Description

technical field [0001] The present invention relates to a semiconductor device, in particular to a semiconductor device comprising a driving device and a driven device connected by a transmission line. Background technique [0002] A related semiconductor device includes a driver (or driving device), a receiver (or driven device), and a transmission line (or bus) connected between the driver and the receiver. This driver has an output impedance Zout, while the transmission line has impedance Z0. [0003] If the driver, receiver, and transmission line are ideal, the output signal of the driver will not be attenuated when it is transmitted to the receiver on the transmission line. The signal is then all reflected by the receiver (or at the receiver-side end of the transmission line) and returned to the driver without attenuation. Provided that the output impedance Zout is equal to impedance Z0, the reflected signal is terminated (or absorbed) at the driver-side end of the tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/00H01L29/80H03F1/56H03K19/0175H04B3/18H04L25/02
CPCH04L25/0278H04L25/028H04B3/18H01L29/80H03K19/0175H03F1/56
Inventor 伊佐聪船场诚司
Owner PS4 LUXCO SARL
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