pre lim i n ary inf o r m atio n amd-760? mp chipset over view p ublication identif i cati on num b er: 24229 c october 2001 publication #: 24229 re v: c i ssu e date: oc tober-200 1
? 2001 advanced micro devices, inc. all rights reserved. the contents of this document are pr ovided in connection with advanced micro devices, inc. (?amd?) products. amd makes no representations or warranties with respect to the accuracy or completeness of the contents of this publication and reserves the right to make changes to specifications and product descriptions at any time without notice. no license, whether express, implied, arising by estoppel, or otherwise, to any intellectual property rights are granted by this publication. except as set forth in amd?s standard terms and conditions of sale, amd assumes no liability whatsoever, and disclaims any express or implied warranty, relating to its products including, but not limited to, the implied warranty of merchantability, fitness for a particular purpose, or infringement of any intellectual property right. amd?s products are not designed, intended, authorized or warranted for use as components in systems intended for surgical implant into the body, or in other applications intended to support or sustain life, or in any other application in which the failure of amd?s product could create a situation where personal injury, death, or severe property or environmental damage may occur. amd reserves the right to discontinue or make changes to its products at any time without notice. trademarks amd, the amd logo, amd athlon, and combinations thereof, amd-760, amd-762, and amd-766 are trademarks of advanced micro devices, inc. other product names used in this publication are for iden tification purposes only and may be trademarks of their respective companies.
pre lim i n ary inf o r m atio n 2422 9c ? o c t ober 200 1 amd-760? mp chipset overview con t en ts overview ....................................................................................................................... ..................5 amd-762? syste m co ntroller ....................................................................................................7 amd-766? peripheral bus controller .......................................................................................8 f i gure 1. amd-760? mp chipset high- level syste m ar chitectur e ......................................... 6 3
pre lim i n ary inf o r m atio n amd-760? mp chipset overview 2422 9c ? o c t ober 200 1 revision history d a t e r e v i s i o n descrip t ion c october 2001 second edition public r e lease. - add amd athlon mp re f e re nce s a nd te x t to f a c ilita te the amd athlon mp launch. b ma y 2001 i n itial public release. a-1 ma y 2001 i n itial nd a release. 4 overvi ew
pre lim i n ary inf o r m atio n 2422 9c ? o c t ober 200 1 amd-760? mp chipset overview overview the amd-760? mp chi p set is a hig h pe rforman c e two-wa y multiprocessor core lo g i c solution for the athlon? mp clas s processors . th e hig h -pe rformanc e of the chipset is attributed to an enhanc ed amd athlon ? s y stem bus, support fo r ddr (double d a ta rat e ) memor y te chnolog y , and agp-4x g r aphics i n terfa ce. to g e th er with ot he r sophisticated co re lo g i c in memor y and i / o control, s y stem and po we r mana g e ment, the amd - 760mp chipset provides a power ful solution for serv er and workst at i o n pl at form s. the AMD-760MP chipse t consists of the following compon ents. amd-762? s y stem cont roller (northb r idge) amd-766? periph eral b u s cont roller (southbridge). ke y fe at ures of t h e chi p s e t are as fol l o ws: dual point-to-point , hig h -speed 266mhz 1 amd s y stem buses (supporting u p to two processors) pc2100 2 ddr (double d a ta rate) memor y subs y s tem (supporting up to 4 gb of memo r y space) agp -4x gr aphics i n ter f ace (suppo rts 1x and 2x modes) pc i 2.2 compliant 33 mhz ? 32/64-bit pci b u s interfa ce two-chann e l e i de i n ter f ace suppo rting ata 33/ 66/100 modes l p c bus f l a s h me mor y /gp i o i n t e r f a ce usb 1.1 compliant ohc i host controller suppo r ting four po rts sm-b us i o ap i c suppo rt serial i r q support power mana gement support these fe atures combine to deliver unpre ced en ted performan ce to platfo rms implementing amd processor te chnolo g y . f i g u re 1 shows the s y ste m architectur e of the am d-760 mp chipset. 1 t h e 26 6 mh z s p eed re pres en t s a 133 mh z c l ock s i gn al , w i t h dat a t r an sf ers on bot h cl oc k edg e s . t h i s produ ces a (133 mh z cl ock ) x ( 2 dat a t r an sf ers / cl oc k ) = 266m t r an s f e r s / s ec = 266- mh z dat a rat e . 2 pc 210 0 rep r es en t s d d r m e m o r y d i mms t h at prov i d e dat a rat e s of 2100 m b / s , cal cu l a t e d as (133- mh z cl ock ) x (2 d a ta tran sf ers/clo c k ) x (8 b y te s/tra n s f er) 210 0 mb/ s . overvi ew 5
pre lim i n ary inf o r m atio n amd-760? mp chipset overview 2422 9c ? o c t ober 200 1 f i gure 1. amd-760? mp chipset hig h-level syste m ar chitectur e 6 overvi ew
pre lim i n ary inf o r m atio n 2422 9c ? o c t ober 200 1 amd-760? mp c h i p set overvi ew amd-762? system contr o ller the amd-762? s y stem controller provides the brid g i n g fun c tion betwee n the hig h -sp eed host- processor bus es, agp gr aphics subs y s tem, d d r me mor y subs y s tem, and t h e pc i inter f ac e. ke y fe atures of th e amd - 762 s y st em controller a r e as follows: two 266 mhz point-to-point amd s y stem bus es, providing uni-pro cessor or 2-wa y s y mm e t r i c multipr o c e s s o r c a p a b ilit y pc2100 ddr (double data rate) memo r y cont roller with support for up to 4 gb of memor y sp ace (supports four re g i stered d i mm slots) agp-4x i n ter f ac e (supp orting 1x and 2x modes) dual mode pc i 2.2 com p liant pci b u s i n te rfa ce 33 mhz clock with 32-bit and 64-bit data path sup port. (supports up to seven pc i devices 3 ) 66 mhz clock with 32-bit and 64- bit data path sup port. (s upports up to two pc i slots) a 949-pin ceramic colu mn grid arra y (ccga) packa g e 2.5 v core the amd-762 s y stem co ntroller also suppor ts the 66 mhz / 32-bit/64-bit p c i bus mode 4 . i n this mode, the amd-762 s y st em controller supports o n l y two 66-mhz pc i bus slots. f o r desig n s requirin g both 66 mhz and 33 mhz pci capab ility , comp atible sout hbridge components implementing pc i - to -pci b r idg i n g can be us ed to provide 33 mhz bus ex p a nsion. 3 t h e a m d - 762? sy s t e m co n t rol l e r pr ov i d es ei gh t pc i bu s r e q / g n t # s i gn al pai r s . on e pair dedicated to th e sou t h b ridg e (sb r eq, sb gnt #) 7 pairs dedicated to oth e r p c i dev i ces (r eq[6:0], gnt [6: 0 ] # ) f r o m a bu s l o adi n g an d s i gn al i n t e g r i t y pers pect i v e, a m d des i gn s a n d t e s t s i t s a m d - 762 sy s t e m co n t rol l e r- bas e d ref e ren ce des i g n plat f o r m s to accom m odate fiv e p c i bu s s l ots (33- mhz m ode). neg l ecti n g th e sou t h b ridg e, th i s co n f i g u r atio n lea v es t w o req / gnt # sig n a l p a irs av ai lab l e fo r ad d itio n a l m o t h erb o a rd p c i slo t s an d d e v i ce s (f o r ex a m ple, s c si co m pon e n t s , net w or k in ter f ace c o m pon e n t s , etc). it is u p to th e s y s t e m d e s i gn er to perf or m th e n eces s a r y an a l y s is a n d tes t i n g to determ i n e i f addition a l s l ots an d dev i ces can be s u pported. 4 t h i s m ode i s n o t su pport e d w h en t h e a m d - 762 sy s t e m c o n t rol l e r i s us ed i n con j un ct i o n w i t h t h e a m d - 766? p e riph eral b u s c o n t roller. t h is m ode can on l y be u s ed w h e n th e nort h b ridg e is i n terf aced to a p c i 6 6 mhz capa b le s o u t h b ri dg e t h at i s co m p at i b l e t o t h e a m d - 762 sy s t e m c ont rol l e r. amd-762? syste m controller 7
pre lim i n ary inf o r m atio n amd-760? mp chipset overview 2422 9c ? o c t ober 200 1 amd-766? peripheral bus contr o ller the amd-766? p e riphe ral bus controller inte g r at es the i / o subs y s tems ? allowing communication to peripheral devic e s. i n clud ed in the amd-766 pe ripheral bus controller ar e the following f eatures: pc i 2.2 compliant 33 m h z / 32-bit pci b u s i n ter f ace l p c ( l ow pin count) bus interfac e gp i o / f lash i n te rfa ce: 8 bits wide; support for f l a s h bi os and attachment of gene ral purpose i / o devic e s (fo r ex ample, buttons and switches) se ve r a l inte r n a l r e si sters added for s y stem cost red u ction udma 33/66/100 compatible e i de bus master c ontroller support for a primar y an d a seconda r y dual-d r ive port supports p i o modes 1-4 atap i two separ a te fi fos for dma ac cesses and re ad prefet ch and write bu ffe r s for p i o acc esses. ohc i - based usb 1.1 ho st controller ( i nclud e s a r oot hub and support for f our ports) ex tensive acpi -complia nt power mana gement log i c prog r a mmable c2, c3, a nd power-on-suspend, s u spend-to-ram, suspen d to disk, and soft off st at es thr o ttling hardw a re t r aps s y ste m ina c tivit y time r s y stem mana g e m e nt log i c, including total cost o f ownership ( t co) re g i s t ers p r i v ac y / s ecuri t y l o g i c, i n cl udi ng r o m a ccess con t rol 32 pins multiple x e d with ge ne ra l pur pose i o ( g p i o) f unc tiona lit y at-compatible i n te rrupt controller (8259-based ) prog r a mmable interval ti mer (8254-bas e d) real-time clock (rtc) 256 b y tes of cmos ra m b a tter y - powe r ed acp i - c ompliant ex tensio ns reg i ster -compatible i / o ap i c (82093) l e gac y a t log i c (includi ng port 61h lo g i c, gate a20 log i c, port 92h lo g i c , etc) smb u s controller with o n e smb u s port a 272-pin b ga p ack a g e 3.3-volt core and output drivers; 5-v toler a nt input buffers 8 amd-766? periph eral bus controller
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