发明授权
- 专利标题: Clock domain crossing FIFO
- 专利标题(中): 时钟域交叉FIFO
-
申请号: US09999007申请日: 2001-10-31
-
公开(公告)号: US07187741B2公开(公告)日: 2007-03-06
- 发明人: Timothy Pontius , Robert L. Payne , David R. Evoy
- 申请人: Timothy Pontius , Robert L. Payne , David R. Evoy
- 申请人地址: NL Eindhoven
- 专利权人: NXP B.V.
- 当前专利权人: NXP B.V.
- 当前专利权人地址: NL Eindhoven
- 代理商 Kevin H. Fortin
- 主分类号: H04L7/00
- IPC分类号: H04L7/00 ; H04L25/00 ; H04L25/40
摘要:
A method and arrangement of passing data from a source clock domain to a non-synchronous receive clock domain are provided. A first processing circuit, located in the source clock domain, links write-address information with the data, and a clock generator generates a transmit clock signal in the source clock domain synchronous with a source clock. The first processing circuit transmits the clock signal and the data with the linked write-address information to a second processing circuit in the receive clock domain. In the receive clock domain, the second processing circuit writes the data at an address designating a storage element corresponding to the linked write-address information. The second processing circuit clocks the data into the storage element synchronous with the accompanying transmit clock signal responsive to a write enable signal from the source clock domain, and reads the data out of the storage element synchronous with a receive domain clock.
公开/授权文献
- US20030081713A1 Clock domain crossing fifo 公开/授权日:2003-05-01
信息查询