US008269523B2
`
`112) United States Patent
`US 8,269,523 B2
`Konda
`(45) Date of Patent:
`Sep. 18, 2012
`
`(10) Patent No.:
`
`(54)
`
`VLSI LAYOUTS OF FULLY CONNECTED
`GENERALIZED NETWORKS
`
`(75)
`
`Inventor: Venkat Konda, San Jose, CA (US)
`
`(73)
`
`Assignee: Konda Technologies Inc., San Jose, CA
`(US)
`
`(*)
`
`Notice:
`
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 183 days.
`
`(21)
`
`App1.No.:
`
`12/601,275
`
`(22)
`
`PCT Filed:
`
`May 22, 2008
`
`(86)
`
`(87)
`
`(65)
`
`(60)
`
`(51)
`
`(52)
`(58)
`
`(56)
`
`PCT No.:
`
`PCT/US2008/064605
`
`§ 371 (C)(1),
`(2), (4) Date: May 31, 2010
`
`PCT Pub. No.: WO2008/147928
`
`PCT Pub. Date: Dec. 4, 2008
`
`Prior Publication Data
`
`US 2011/0037498 A1
`
`Feb. 17, 2011
`
`Related US. Application Data
`
`Provisional application No. 60/940,394, filed on May
`25, 2007.
`
`Int. Cl.
`
`H03K 19/177
`(2006.01)
`
`326/41; 326/38
`US. Cl.
`Field of Classification Search .............. 326/3841;
`370/390, 312, 360, 388, 412
`See application file for complete search history.
`
`References Cited
`
`U.S. PATENT DOCUMENTS
`
`4,813,038 A *
`5,406,556 A *
`
`3/1989 Lee ............................... 370/390
`4/1995 Widjaja et al.
`................ 370/381
`
`1/1999 Yang et al.
`............... 370/395.72
`5,856,977 A *
`
`4/2000 Prasad ..
`370/386
`6,049,542 A *
`6,157,643 A * 12/2000 Ma ........
`.. 370/389
`
`5/2003 Yang et al.
`709/238
`6,567,858 B1*
`
`.. 326/41
`6,940,308 B2*
`9/2005
`709/238
`7,130,920 B1* 10/2006
`
`370/388
`7,136,380 B2* 11/2006
`370/388
`7,154,887 B2* 12/2006
`..
`7,346,049 B2*
`3/2008
`370/386
`7,349,387 B2*
`3/2008 Wu ............................... 370/360
`
`(Continued)
`
`Primary Examiner 7 Vibol Tan
`
`(57)
`
`ABSTRACT
`
`In accordance with the invention, VLSI layouts ofgeneralized
`multi-stage networks for broadcast, unicast and multicast
`connections are presented using only horizontal and vertical
`links. The VLSI layouts employ shuffle exchange links where
`outlet links of cross links from switches in a stage in one
`sub-integrated circuit block are connected to inlet links of
`switches in the succeeding stage in another sub-integrated
`circuit block so that said cross links are either vertical links or
`horizontal and vice versa. In one embodiment the sub-inte-
`
`grated circuit blocks are arranged in a hypercube arrangement
`in a two-dimensional plane. The VLSI layouts exploit the
`benefits of significantly lower cross points,
`lower signal
`latency, lower power and full connectivity with significantly
`fast compilation.
`The VLSI layouts presented are applicable to generalized
`multi-stage networks V(N1, N2,
`(1, s), generalized folded
`multi-stage networks Vfo,(,,,(N1 , N2, (1, s), generalized butterfly
`fat tree networks Vbfl(N1, N2,
`(1, s), generalized multi-link
`multi-stage networks Vm,ink(N1, N2, (1, s), generalized folded
`multi-link multi-stage networks Vfo,d_mh."k(N1, N2, (1, 5), gen-
`eralized multi-link butterfly fat tree networks thnk_bfl(N1,
`N2, (1, s), and generalized hypercube networks Vhwbe(Nl, N2
`(1, s) for F1, 2, 3 or any number in general. The embodiments
`ofVLSI layouts are useful in wide target applications such as
`FPGAs, CPLDs, pSoCs, ASlC placement and route tools,
`networking applications, parallel & distributed computing,
`and reconfigurable computing.
`
`48 Claims, 39 Drawing Sheets
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`Page 1 of 62
`
`FLEX LOGIX EXHIBIT 1001
`
`FLEX LOGIX EXHIBIT 1001
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`Page 1 of 62
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`

`

`US 8,269,523 B2
`
`Page 2
`
`U.S. PATENT DOCUMENTS
`7,397,796 Bl”
`7/2008 Smiljani
`....................... 370/390
`
`7,424,010 B2*
`9/2008 Konda .....
`. 370/388
`7,424,011 B2*
`9/2008 Konda .......................... 370/388
`
`7,468,974 131* 12/2008 Carr et al.
`..................... 370/388
`*
`
`3333333 3},
`333}: $33,333:;
`" 332/2}
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`’
`g
`"""""""""""
`* cited by examiner
`
`Page 2 of 62
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`

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`U.S
`
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`
`Sep.18,2012
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`U S. Patent
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`Sep. 18, 2012
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`Sep.18,2012
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`Sheet40f39
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`US 8,269,523 B2
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`U.S. Patent
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`Sep. 18, 2012
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`Sheet 5 of 39
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`US 8,269,523 B2
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`Page 8 of 62
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`U.S. Patent
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`Sep. 18, 2012
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`Sheet 7 of 39
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`US 8,269,523 B2
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`U.S. Patent
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`Sep. 18, 2012
`
`Sheet 8 of 39
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`US 8,269,523 B2
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`U.S. Patent
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`Sep.18,2012
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`Sheet90f39
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`US 8,269,523 B2
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`U.S. Patent
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`Sep.18,2012
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`Sheet100f39
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`Page 12 of 62
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`U.S. Patent
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`Sep.18,2012
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`Sheet110f39
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`US 8,269,523 B2
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`U.S. Patent
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`Sep.18,2012
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`Sheet120f39
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`US 8,269,523 B2
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`Page 14 of 62
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`U.S. Patent
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`Sep.18,2012
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`Sheet140f39
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`US 8,269,523 B2
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`U.S. Patent
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`Sep.18,2012
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`Sheet160f39
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`US 8,269,523 B2
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`U.S. Patent
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`Sep.18,2012
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`Sheet170f39
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`US 8,269,523 B2
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`Page 19 of 62
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`U.S. Patent
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`Sep.18,2012
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`US 8,269,523 B2
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`Page 20 of 62
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`U.S. Patent
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`Sep.18,2012
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`Sheet190f39
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`US 8,269,523 B2
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`Page 22 of 62
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`U.S. Patent
`
`Sep.18,2012
`
`Sheet210f39
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`US 8,269,523 B2
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`Page 23 of 62
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`U.S. Patent
`
`Sep.18,2012
`
`Sheet220f39
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`US 8,269,523 B2
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`Page 24 of 62
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`Page 24 of 62
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`U.S. Patent
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`Sep.18,2012
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`Sheet230f39
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`US 8,269,523 B2
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`Patent
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`Sep.18,2012
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`Sheet250f39
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`US 8,269,523 B2
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`U.S. Patent
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`Sep.18,2012
`
`Sheet260f39
`
`US 8,269,523 B2
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