Locking source synchronous selection pass receiver device and method

A source-synchronous, receiver technology, applied in the field of microelectronics, can solve problems such as not taking into account timing changes, reducing performance, and unreliable reception of strobe signals

A source-synchronous, receiver technology, applied in the field of microelectronics, can solve problems such as not taking into account timing changes, reducing performance, and unreliable reception of strobe signals

CN101079018AActive Publication Date: 2007-11-28VIA TECH INC
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  • Locking source synchronous selection pass receiver device and method
  • Locking source synchronous selection pass receiver device and method
  • Locking source synchronous selection pass receiver device and method

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Embodiment Construction

[0050] The following description is provided to enable one skilled in the art to make and use a specific embodiment of the invention and its requirements. Many modifications to this preferred embodiment will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments as well. Therefore, the present invention is not limited to the embodiments described below, but must be consistent with the broadest scope consistent with the principles and novel features disclosed herein.

[0051] The present invention overcomes the above-mentioned defects of the prior art, and provides a dynamic source synchronous gating receiving device and method, the device and method have a dynamic locking gap based on a delay-locked loop (delay-locked loop DLL), the delay-locked loop's The clock signal comes from the on-chip clock derived from the bus clock. The dynamic lock gap is used to transmit data strobes and their associated data according...

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Abstract

The present invention provides a device of locking source synchronization gating receiver, including delay locking loop and gating receiver. The delay locking loop receives reference clock and generates selection vector signal and coding selection vector signal, the selection vector is used for selecting one of delay editions of the reference clock signal which are generated through the reference clock signal pass through certain periods. The selection vector subtracted by a value is used by Gray encode for indicating the first time period. All gating receivers connect with the delay locking loop. Each gating receiver receives the coding selection vector signal and corresponding gating signal, and locks the corresponding gating signal during the first time period after transforming the corresponding gating signal. The Gray code multiplexer selects one delay edition of corresponding gating signal to determine the first time period through the coding selection vector signal.

Description

technical field [0001] The present invention relates to the field of microelectronics, and more particularly to an apparatus and method for locking a source synchronous strobe receiver to prevent a microprocessor system using a source synchronous data and address bus from being caused by bus noise. error indication. And the present invention also provides a device and method applied to a microprocessing system with source synchronous buses of different frequencies. Background technique [0002] Computer systems today use source synchronous system buses to provide data exchange between bus agents, such as data exchanges between microprocessors and memory hubs. The "source synchronous" bus protocol enables data to be transmitted at very high speeds. The source synchronous protocol operates on the basis of the following principles: The transport bus agent (bus agent) puts data on the bus for a fixed period of time and sends out a and the The "strobe" signal corresponding to t...

Claims

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Application Information

Patent Timeline
28 Nov 2007
Publication
CN101079018A
IPC
G06F13/40; H03K5/1252; H03L7/06
CPC
G06F13/4243
Inventors
詹姆斯·R·伦德伯格; 达赖厄斯·D·加斯金斯