公开(公告)号：US20020175774A1

公开(公告)日：2002-11-28

申请号：US10201668

申请日：2002-07-23

Applicant: U.S. PHILIPS CORPORATION

Inventor： David Canard ,  Vincent Fillatre

IPC: H03L007/00

CPC classification number: H03L7/1974 ,  G06F7/68 ,  H03L7/0891

Abstract: The invention relates to a frequency converter FCV comprising: a frequency divider FRACN, and an input port REG intended to receive a control word N(1:L) which determines a division ratio between the input FLO and output FDIV frequencies of the frequency divider FRACN. The frequency converter in accordance with the invention FCV additionally comprises interface means INT, arranged between the input port REG and the frequency divider FRACN, and intended to carry out a conversion of a control word value N(1:L) to a first and a second parameter M(1:L-P) and k(1:P) which jointly define a non-integer value of the division ratio of the frequency divider FRACN. The invention enables the user to program the frequency divider FRACN by means of a unique control word N(1:L), while customarily two control words are necessary to program non-integer division ratios.

Abstract translation: 本发明涉及一种变频器FCV，包括：分频器FRACN和用于接收控制字N（1：L）的输入端口REG，其确定分频器FRACN的输入FLO和输出FDIV频率之间的分频比 。 根据本发明的变频器FCV还包括布置在输入端口REG和分频器FRACN之间的接口装置INT，并且旨在执行控制字值N（1：L）到第一和第 第二参数M（1：LP）和k（1：P），它们共同定义了分频器FRACN的分频比的非整数值。 本发明使得用户能够通过唯一的控制字N（1：L）对分频器FRACN进行编程，而通常需要两个控制字来编程非整数分频比。