Data handover unit for transferring data between different clock domains by parallelly reading out data bits from a plurality of storage elements

US7461186B2 · kind B2 · utility

Assignee

• Infineon Technologies AG · DE

Inventors

• Martin Streibl · Petershausen, DE
• Peter Gregorius · Munich, DE
• Ralf-Rainer Schledz · St. Margarethen, AT
• Thomas Rickes · Munich, DE
• Zheng Gu · Rosedale, US

Key dates

• Filing date: Feb 3, 2006
• Grant date: Dec 2, 2008
• Expiry date: Nov 30, 2026

Classification

• Technology area (CPC G): Physics
• CPC primary: G11C7/1093
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

The invention provides a data handover unit for transferring data from a furst clock domain to a second clock domain, comprising: a first clock unit operable to supply a first clock signal; a selector stage operable to sample an incoming data stream with respect to the first clock signal; a second clock unit operable to supply a second clock signal; a storage unit coupled with the selector stage, wherein the storage unit has a first plurality of storage elements each of which is operable to store one bit of data of the sampled data stream, an output unit for parallelly reading out a fram of data from a second plurality of storage elements included in the first plurality of storage elements with respect to the second clock signal, wherein the selector stage is further operable to successively write the data bits of the sampled data stream into the first plurality of storage elements and to store the respective data bits of the sampled data stream in the respective storage elements until they were read out by the output unit.