US 6,983,032 B2
Digital timing recovery method for communication receivers
Fernando A. Mujica, Allen, Tex. (US); Udayan Dasgupta, Richardson, Tex. (US); Sandeep Kesrimal Oswal, Bangalore (India); Murtaza Ali, Plano, Tex. (US); Pradeep Kiran Sarvepalli, College Station, Tex. (US); Prakash Easwaran, Bangalore (India); and Diptendra Narayan Basu, Bangalore (India)
Assigned to Texas Instruments Incorporated, Dallas, Tex. (US)
Filed on Aug. 28, 2001, as Appl. No. 9/941,002.
Prior Publication US 2003/0043945 A1, Mar. 06, 2003
Int. Cl. H03D 3/24 (2006.01)
U.S. Cl. 375—375 23 Claims
OG exemplary drawing
 
1. An apparatus for timing recovery for a receiver in a communication system, said apparatus comprising:
a phase estimator having an input for receiving phase information corresponding to a remote clock signal associated with a data signal and operable to determine a phase error with respect to said remote clock signal and a local clock signal, said phase estimator further operable to translate said phase error for timing correction of the local clock signal and issue a corresponding correction signal; and
a first clock modifier having an input for receiving said local clock signal and operable to apply a first phase modifier responsive to said issued correction signal, said first clock modifier further having an output for issuing a synchronized clock signal, wherein said synchronized clock signal is received as a drive signal by an analog-to-digital converter which converts said data signal at a sampling frequency responsive to said synchronized clock signal.