Electrical computers and digital processing systems: support – Synchronization of clock or timing signals – data – or pulses – Using delay
Reexamination Certificate
2006-02-07
2006-02-07
Elamin, A. (Department: 2116)
Electrical computers and digital processing systems: support
Synchronization of clock or timing signals, data, or pulses
Using delay
C712S200000, C712S204000, C712S219000, C712S228000, C712S300000, C714S017000, C709S224000
Reexamination Certificate
active
06996735
ABSTRACT:
A method and apparatus for trace data alignment for trace data generated during differing instruction pipeline stages selectively delays write data, memory access address and memory access control data zero, one or two pipeline stages dependent upon the memory access control data. Program counter data delayed by one clock cycle is delayed one pipeline stage if the next instruction is a new instruction. Program counter control data is also delayed one pipeline stage. The write data, memory access address, memory access control data, program counter data and program counter control data are further delayed a number of pipeline stages to align with read data. The program counter data holds if the pipeline is stalled. The write data, memory access address, memory access control data, program counter data and program counter control data holds in the multistage pipeline delay register if the pipeline is stalled.
REFERENCES:
patent: 5625787 (1997-04-01), Mahin et al.
patent: 5838692 (1998-11-01), Tobin
patent: 5867644 (1999-02-01), Ranson et al.
patent: 5867690 (1999-02-01), Lee et al.
patent: 5922070 (1999-07-01), Swoboda et al.
patent: 5944841 (1999-08-01), Christie
patent: 5948099 (1999-09-01), Crawford et al.
patent: 5964863 (1999-10-01), Liu et al.
patent: 6035422 (2000-03-01), Hohl et al.
patent: 6081885 (2000-06-01), Deao et al.
patent: 6106573 (2000-08-01), Mahalingaiah et al.
patent: 6189140 (2001-02-01), Madduri
patent: 6219773 (2001-04-01), Garibay et al.
patent: 6247119 (2001-06-01), Matt
patent: 6446249 (2002-09-01), Wang et al.
patent: 6611796 (2003-08-01), Natarajan et al.
patent: 6763385 (2004-07-01), Orfali
patent: 6789184 (2004-09-01), Singh et al.
patent: 6889311 (2005-05-01), Flores et al.
patent: 2003/0140245 (2003-07-01), Dahan et al.
patent: 2004/0103256 (2004-05-01), Flores et al.
patent: 40716050 0 (1995-06-01), None
Flores Jose L.
Nardini Lewis
Brady III W. James
Elamin A.
Marshall, Jr. Robert D.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
LandOfFree
Apparatus for alignment of data collected from multiple pipe... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for alignment of data collected from multiple pipe..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for alignment of data collected from multiple pipe... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3680838