( 12 ) United States Patent
`Shaeffer et al .
`
`( 10 ) Patent No .: US 10,672,458 B1
`( 45 ) Date of Patent :
`* Jun . 2 , 2020
`
`US010672458B1
`
`( 54 ) MEMORY SYSTEM TOPOLOGIES
`INCLUDING A BUFFER DEVICE AND AN
`INTEGRATED CIRCUIT MEMORY DEVICE
`( 71 ) Applicant : Rambus Inc. , Sunnyvale , CA ( US )
`
`( 72 )
`
`Inventors : Ian Shaeffer , Los Gatos , CA ( US ) ; Ely
`Tsern , Los Altos , CA ( US ) ; Craig
`Hampel , Los Altos , CA ( US )
`( 73 ) Assignee : Rambus Inc. , Sunnyvale , CA ( US )
`
`( * ) Notice :
`
`Subject to any disclaimer , the term of this
`patent is extended or adjusted under 35
`U.S.C. 154 ( b ) by 0 days .
`This patent is subject to a terminal dis
`claimer .
`
`( 21 ) Appl . No .: 16 / 692,043
`
`( 22 )
`
`Filed :
`
`Nov. 22 , 2019
`
`Related U.S. Application Data
`( 60 ) Continuation of application No. 16 / 214,986 , filed on
`Dec. 10 , 2018 , now Pat . No. 10,535,398 , which is a
`( Continued )
`
`( 51 ) Int . Ci .
`GIIC 7700
`GIIC 11/4093
`
`( 52 ) U.S. CI .
`CPC
`
`( 2006.01 )
`( 2006.01 )
`( Continued )
`
`( 58 )
`
`GIIC 11/4093 ( 2013.01 ) ; G06F 13/16
`( 2013.01 ) ; G06F 13/4027 ( 2013.01 ) ;
`( Continued )
`Field of Classification Search
`CPC . G11C 11/4093 ; GO6F 13/16 ; G06F 13/4027 ;
`GO6F 13/4068
`( Continued )
`
`Signal
`Path
`( Control
`Address )
`103
`data slice b
`
`M
`
`M
`
`M
`
`M
`
`Buffer
`100b
`
`Memory
`Devices
`101a - d
`
`data slice a
`
`M
`
`M
`
`Buffer
`100a
`
`Signal
`Paths
`( Data )
`102a - d
`
`( 56 )
`
`4,621,339 A
`4,631,666 A
`
`References Cited
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`11/1986 Wagner et al .
`12/1986 Harris et al .
`( Continued )
`FOREIGN PATENT DOCUMENTS
`
`CN
`CN
`
`10/2004
`1540665
`2/2005
`1577633
`( Continued )
`
`OTHER PUBLICATIONS
`“ Draft Standard for a High - Speed Memory Interface ( SyncLink ) , "
`Draft 0.99 IEEE P1596.7-1998 , pp . 1-56 ( 1996 ) , Microprocessor
`and Microcomputer Standards Subcommittee of the IEEE Com
`puter Society . 66 pages .
`( Continued )
`Primary Examiner Vu A Le
`( 57 )
`ABSTRACT
`Systems , among other embodiments , include topologies
`( data and / or control / address information ) between an inte
`grated circuit buffer device ( that may be coupled to a master ,
`such as a memory controller ) and a plurality of integrated
`circuit memory devices . For example , data may be provided
`between the plurality of integrated circuit memory devices
`and the integrated circuit buffer device using separate seg
`mented ( or point - to - point link ) signal paths in response to
`control / address information provided from the integrated
`circuit buffer device to the plurality of integrated circuit
`buffer devices using a single fly - by ( or bus ) signal path . An
`integrated circuit buffer device enables configurable effec
`tive memory organization of the plurality of integrated
`circuit memory devices . The memory organization repre
`sented by the integrated circuit buffer device to a memory
`controller may be different than the actual memory organi
`zation behind or coupled to the integrated circuit buffer
`device . The buffer device segments and merges the data
`transferred between the memory controller that expects a
`( Continued )
`Memory
`Module
`100
`
`data slice c
`
`data slice d
`
`M
`
`M
`
`M
`
`M
`
`M
`
`M
`
`M
`
`M
`
`Buffer
`100C
`
`Buffer
`1000
`
`Signal
`Path ( Data )
`120a
`
`Signal
`Path ( Data )
`120b
`
`Signal
`Path
`( Controll
`Address :
`Clock )
`121
`
`Signal
`Path ( Data )
`120c
`
`Signal
`Path ( Data )
`1200
`
`Petitioners
`Ex. 1066, p. 1
`
`

`

`US 10,672,458 B1
`Page 2
`
`particular memory organization and actual memory organi
`zation .
`
`20 Claims , 38 Drawing Sheets
`
`( 58 ) Field of Classification Search
`365 / 189.17
`USPC
`See application file for complete search history .
`
`( 51 )
`
`Related U.S. Application Data
`continuation of application No. 15 / 832,468 , filed on
`Dec. 5 , 2017 , now Pat . No. 10,381,067 , which is a
`continuation of application No. 15 / 389,409 , filed on
`Dec. 22 , 2016 , now Pat . No. 9,865,329 , which is a
`continuation of application No. 14 / 801,723 , filed on
`Jul . 16 , 2015 , now Pat . No. 9,563,583 , which is a
`continuation of application No. 14 / 015,648 , filed on
`Aug. 30 , 2013 , now Pat . No. 9,117,035 , which is a
`continuation of application No. 13 / 149,682 , filed on
`May 31 , 2011 , now Pat . No. 8,539,152 , which is a
`continuation of application No. 12 / 703,521 , filed on
`Feb. 10 , 2010 , now Pat . No. 8,108,607 , which is a
`continuation of application No. 12 / 424,442 , filed on
`Apr. 15 , 2009 , now Pat . No. 7,685,364 , which is a
`division of application No. 11 / 697,572 , filed on Apr.
`6 , 2007 , now Pat . No. 7,562,271 , which is a contin
`uation - in - part of application No. 11 / 460,899 , filed on
`Jul . 28 , 2006 , now Pat . No. 7,729,151 , which is a
`continuation - in - part of application No. 11 / 236,401 ,
`filed on Sep. 26 , 2005 , now Pat . No. 7,464,225 .
`Int . Ci .
`( 2006.01 )
`HOIL 25/10
`( 2006.01 )
`GIIC 5/02
`G11C 5/04
`( 2006.01 )
`GIIC 5/06
`( 2006.01 )
`( 2006.01 )
`GIIC 710
`( 2006.01 )
`GIIC 7/22
`( 2006.01 )
`G06F 13/40
`( 2006.01 )
`G06F 13/16
`( 2006.01 )
`GIIC 11/4076
`( 2006.01 )
`GIIC 11/4091
`( 2006.01 )
`G11C 11/4094
`( 2006.01 )
`GIIC 11/4096
`( 2006.01 )
`HOIL 25/065
`HOIL 25/18
`( 2006.01 )
`( 2006.01 )
`HOIL 23/00
`( 52 ) U.S. CI .
`GO6F 13/4068 ( 2013.01 ) ; GIIC 5/025
`CPC
`( 2013.01 ) ; GIIC 5/04 ( 2013.01 ) ; G11C 5/06
`( 2013.01 ) ; GIIC 7/1006 ( 2013.01 ) ; G11C
`7/222 ( 2013.01 ) ; G11C 11/4076 ( 2013.01 ) ;
`GIIC 11/4091 ( 2013.01 ) ; GIIC 11/4094
`( 2013.01 ) ; GIIC 11/4096 ( 2013.01 ) ; HOIL
`25/0652 ( 2013.01 ) ; HOIL 25/105 ( 2013.01 ) ;
`GIIC 7/22 ( 2013.01 ) ; HOIL 24/73 ( 2013.01 ) ;
`HOIL 25/0657 ( 2013.01 ) ; HOIL 25/18
`( 2013.01 ) ; HOIL 2224/32145 ( 2013.01 ) ; HOIL
`2224/48227 ( 2013.01 ) ; HOIL 2224/73265
`( 2013.01 ) ; HOIL 2225/1005 ( 2013.01 ) ; HOIL
`2225/1023 ( 2013.01 ) ; HOIL 2225/1058
`( 2013.01 ) ; HOIL 2924/14 ( 2013.01 ) ; HOIL
`2924/15192 ( 2013.01 ) ; HOIL 2924/15311
`( 2013.01 ) ; HOIL 2924/15331 ( 2013.01 ) ; HOIL
`2924/3011 ( 2013.01 ) ; HOIL 2924/3025
`( 2013.01 )
`
`( 56 )
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`Petitioners
`Ex. 1066, p. 2
`
`

`

`( 56 )
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`Petitioners
`Ex. 1066, p. 3
`
`

`

`US 10,672,458 B1
`Page 4
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`( 56 )
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