Title: Digital phase-frequency identification circuit
Application Number: 200410049599 Application Date: 2004.06.17
Publication Number: 1710806 Publication Date: 2005.12.21
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H03D13/00,H03L7/08
Applicant(s) Name: Liansheng Electronic Co., Ltd. Address:
Inventor(s) Name:
Attorney & Agent: wang zhisen huang xiaolin
Abstract:
     The discrimination circuit includes following parts: a first SR latch in use for generating a first output signal at predetermined state setup; a second SR latch in use for generating a second output signal at predetermined state setup; a predetermined state testing circuit in use for detecting the first output signal and the second output signal, and outputting a RCM signal based on the detection; a first predetermined state control circuit in use for setting up the first SR latch at the predetermined state based on the RCM signal; a second predetermined state control circuit in use for setting up the second SR latch at the predetermined state based on the RCM signal. The first SR latch and the first predetermined state control circuit can receive a first input signal. The second SR latch and the second predetermined state control circuit can receive a second input signal.
Time: 17