| US 7,555,036 B2 | ||
| System and method for implementing a delta-sigma modulator integrity supervisor | ||
| Christian Eichrodt, Tustin, Calif. (US); Frode Larsen, Tinton Falls, N.J. (US); and Arnold Muralt, Fair Haven, N.J. (US) | ||
| Assigned to Brooktree Broadband Holding, Inc., Newport Beach, Calif. (US) | ||
| Filed on Feb. 25, 2004, as Appl. No. 10/786,669. | ||
| Application 10/786669 is a division of application No. 09/640123, filed on Aug. 16, 2000, granted, now 6,765,954, filed on Jul. 20, 2004. | ||
| Claims priority of provisional application 60/149120, filed on Aug. 16, 1999. | ||
| Prior Publication US 2004/0164888 A1, Aug. 26, 2004 | ||
| Int. Cl. H04B 1/38 (2006.01); H04L 5/16 (2006.01) | ||
| U.S. Cl. 375—220 [375/224] | 16 Claims |
| 1. A method for preventing a DC flow condition caused by a transmit signal, comprising:
monitoring a data signal to determine whether the data signal exhibits a change in value based on an asynchronous counter
and a predetermined limit, wherein while monitoring the data signal, the asynchronous counter is updated or reset based on
whether the data signal maintains a current logic level for multiple clock cycles;
generating a first signal in response to determining that the data signal does not exhibit a change in value to prevent the
DC flow condition;
monitoring a clock signal; and
generating a second signal in response to a clock signal condition to prevent the DC flow condition.
|