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US007602905B2

(12) United States Patent

Shingal et al.

(io) Patent No.: (45) Date of Patent:

US 7,602,905 B2 Oct. 13, 2009

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6,598,133 B2 7/2003 Schroeder

6,980,649 Bl* 12/2005 Batcher 380/42

6,990,199 B2* 1/2006 Parker etal 380/37

7,003,107 B2* 2/2006 Ananth 380/37

7,043,017 B2* 5/2006 Swindlehurst et al 380/29

7,103,181 B2* 9/2006 Ananth 380/37

(Continued)

OTHER PUBLICATIONS

Baron, Max, "Five Chips From TI—Or, Is It Six?," Microprocessor Report, Mar. 17,2003, Figs.1,3-4, All, In-Stat/MDR, San Jose, Calif.

(Continued)

Primary Examiner—Christopher A Revak

(7'4) Attorney, Agent, or Firm—Wade J. Brady, III; Frederick

J. Telecky, Jr.

(57) ABSTRACT

A wireless communications device (110) has a digital section (800) and a radio frequency section (840). The digital section (800) does setup and execution on a set of data in at least first and second threads concurrently in a series of overlapping iterations by dividing the set of data into at least two different subsets and concurrently reading and writing in both subsets. A state machine (1010, 1100) is shared by the setup and execution iterations. Two or more memory units (930, 940) segregate the set of data, the predetermined size of the set of data in the memories (930, 940) combined comprehending the total number of addresses occupied by the set of data utilized in operation of circuitry (910). Dirty bits (1430) are accessible at addresses corresponding to addresses in the memory. A selector circuit (1412) has a selector output selectively coupled to an address line, and to a data line. The selector circuit (1412) responds to a state on a dirty bit line (db) to couple data bits related to the address bits themselves from the address line (1421) to the selector output (1412). Other circuits and methods of manufacture and operation are also disclosed.

18 Claims, 15 Drawing Sheets

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900

910

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U.S. PATENT DOCUMENTS

7,403,615 B2* 7/2008 Matthews, Jr 380/42

2002/0006195 Al * 1/2002 Venkatesan et al 380/44

2002/0186839 Al 12/2002 Parker etal.

2003/0003896 Al 1/2003 Klingler et al.

2003/0081772 Al* 5/2003 Blaker 380/42

2003 0091185 Al* 5/2003 Swindlehurst et al 380/44

2003/0198345 Al 10/2003 Van Buer

2003/0202658 Al 10/2003 Verbauwhede

2003/0223580 Al 12/2003 Snell

2004/0008844 Al 1/2004 Lideetal.

2005/0240764 Al * 10/2005 Koshyetal 713/170

2006/0078108 Al * 4/2006 Batcher 380/28

2006/0133616 Al * 6/2006 Kim etal 380/277

2007/0030962 Al * 2/2007 Blaker 380/42

OTHER PUBLICATIONS

Texas Instruments, "WLAN Solutions: TNETW1130 Converged Single-Chip MAC and Baseband Processor for IEEE 802.11 a/b/g," SPLT 139A, Figure, p. 1, All, Product Bulletin 2003, Dallas, Texas.

* cited by examiner

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