Data receiver, data receiving system and data transmission system

Abstract

The invention provides a data receiver, a data receiving system and a data transmission system. The data receiver comprises a sampling clock generation circuit, a serial data sampling circuit, a clock selection circuit and a series-to-parallel conversion circuit. The sampling clock generation circuit generates multiple sampling clock signals which have the same frequency and a preset phase difference according to recovery reference clock signals. The serial data sampling circuit collects data transmission signals according to the sampling clock signals to obtain a series of serial receiving data. The clock selection circuit selects one proper sampling clock signal from the sampling clock signals to serve as a series-parallel conversion clock signal. The series-parallel conversion circuit converts the serial receiving data from the serial data sampling circuit into parallel receiving data according to the series-parallel conversion clock signal. Due to the fact that the most proper sampling clock signal is selected from the sampling clock signals to serve as the series-parallel conversion clock signal according to the system clock signals, the synchronism among the data received by all data receivers can be improved.

Description

【Technical field】 [0001] The invention relates to the field of data transmission, in particular to a data receiver, a data receiving system and a data transmission system. 【Background technique】 [0002] With the development of electronic industry technology, especially in the development of transmission interface, IEEE1284 is replaced by USB (Universal Serial Bus) interface, PATA (Parallel Advanced Technology Attachment) is replaced by SATA (Serial Advanced Technology Attachment), PCI (Peripheral Component Interconnect ) was replaced by PCI-Express, none of which proved that the speed of the traditional parallel interface has reached a bottleneck, replaced by a faster serial interface, so SerDes (SERDES is a SERializer (serializer) originally used for optical fiber communication Device) / DESerializer (abbreviation for deserializer) technology has become the mainstream for high-speed serial interfaces. The serial interface mainly uses differential signal transmission technol...

AI Technical Summary

Problems solved by technology

This synchronization method increases the delay of data transmission, increases the complexity of chip or system design, and reduces the effective rate of data transmission to a certain extent.

In addition, the conversion clock of the serial-to-parallel conversio

Images