pre lim i n ary inf o r m atio n AMD-760 ? mpx chipset over view p ublication identif i cati on num b er: 24494 a dece m b er 2001 publication #: 24494 re v: a i ssu e date: d ece m b er -2 001
? 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 arrow logo, amd athlon, and combinations thereof, AMD-760, amd-762, amd-766, and amd-768 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 2449 4 a ? d ece m b er 2001 AMD-760? mpx chips e t overvi ew con t en ts overview ....................................................................................................................... ...................5 amd-762? s y stem co ntroller ..................................................................................................... ..7 amd-768? peripher a l b u s controller ...........................................................................................8 f i g u re 1. amd - 760? m p x chipset hig h - l ev el s y stem archite cture .........................................6 3
pre lim i n ary inf o r m atio n AMD-760? mpx chips e t overvi ew 2449 4 a ? d ece m b er 2001 revision history d a t e r e v i s i o n descrip t ion a decemb e r 2001 i n itial public release. 4 overvi ew
pre lim i n ary inf o r m atio n 2449 4 a ? d ece m b er 2001 AMD-760? mpx chips e t overvi ew overview the AMD-760? mpx c h ipset is a hig h per f orma nce two-w a y multiproces sor core lo g i c solution for amd athlon tm mp cl ass processors, o ffe ring m ulti- p ro cessor e x tend e d ( mp x ) p e rfo rm anc e over the amd - 760 mp chipset. ex tended perfor m ance is off e red b y th e 6 6 -mhz /64-bit/32-bit pc i bus a nd a f e a t u r e - r i ch pe r i phe ra l bus c ontr o lle r of fe r i n g pc i - to- p c i b r idg i n g c a p a b ilit y a l on g with ac ?97 audio. the hig h -pe rform ance o f th e chipset is attributed to an enhanc ed amd athlon s y stem bus, support for ddr (doubl e da t a rate) memor y te chnolo g y , and agp-4x graphi cs i n t e rfa ce. the AMD-760 mpx chi p set consists of the following compon ents: amd-762? s y stem co ntroller (northbrid g e ) amd-768? peripher a l b u s controller (southbri d g e ) tog e th er, these compone nts provide a powe rful so lution for w o rkstation and server cl ass pl at form s. ke y fe at ures of t h e chi p s e t are as fol l o ws: dual hig h -speed 266 mh z 1 amd athlon s y st em buses, supporting up to tw o processors pc2100 2 ddr memor y s ubs y s tem supportin g up to 4 gb of memo r y agp -4x gr aphics i n ter f ace (suppo rts 1x and 2x modes) primar y pc i 2.2 complia nt 66- mhz / 64-bit/32-bit pc i b u s secondar y pc i 2.2 comp liant 33-mhz / 32-bit pci b u s two-chann e l ata 33/66 /100 support l p c bus thirt y -two gener a l-purpo se i o (gp i o ) pins usb ohc i host controll er supportin g four ports sm-b us i o ap i c suppo rt serial i r q support power mana gement supp ort ac ?97 audio support these fe atures combine to deliver unpre ced en ted performan ce to platfo rms implementing amd processor te chnolo g y . 1 t h e 26 6- mh z s p eed repres en t s a 133- mh z cl ock s i g n a l w i t h dat a t r an sf ers on bot h cl oc k edg e s . t h i s i s cal c u l a t e d as (a 133- mh z cl ock ) x (2 dat a t r an sf ers / cl ock ) = 266 m t r a n sf ers / s ec = 266- mh z dat a rat e . 2 pc 2100 repres en t s d d r m e mory d i mms t h at prov i d e dat a rat e s of 2100 mb/ s ec. t h i s i s cal cu l a t e d as (a 133- mhz clock ) x (2 data tran s f ers / clock ) x (8 b y tes /tran sf er) 2100 mb/ s ec. overvi ew 5
pre lim i n ary inf o r m atio n AMD-760? mpx chips e t overvi ew 2449 4 a ? d ece m b er 2001 f i g u re 1 shows the s y ste m architectur e of the am d-760 mpx chipset. f i gure 1. AMD-760? mpx chipset high- level syste m ar chitec ture 6 overvi ew
pre lim i n ary inf o r m atio n 2449 4 a ? d ece m b er 2001 AMD-760? mpx chips e t overvi ew amd-762? system contr o ller the amd-762 s y stem co ntroller provides the brid g i n g function betw een th e hig h -sp e ed host- processor bus es, agp g r 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 uniproc essor o r two-wa y s y mme tr ic multipr o c e sso 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 -compliant pci b u s i n te rfa ce 66-mhz clock with 32-bit and 64-bit data path sup port (s upports up to two pc i slots 3 ) 33-mhz clock with 32-bit a nd 64-bit data path sup por t (supports up to seve n pc i devices 4 ) a 949-pin ceramic colu mn grid arra y (ccga) packa g e 2.5 v core 3 t h e 66- mh z pc i bu s m ode i s s u pport e d on l y w i t h t h e a m d - 768 peri ph eral bu s con t rol l e r. 4 t h e 33- mh z pc i bu s m ode i s s u pport e d on l y w i t h t h e a m d - 766 peri ph eral bu s con t rol l e r. f o r m o re det a i l s , ref e r to th e am d - 760 m p c h i p s e t o ver vi ew , order # 24 229 . amd-762? syste m controller 7
pre lim i n ary inf o r m atio n AMD-760? mpx chips e t overvi ew 2449 4 a ? d ece m b er 2001 amd-768? peripheral bus contr o ller the amd-768 p e ripher a l bus controller is an i n te g r ated circuit ( i c) that s e rves as the i / o hub, interfac e module, or southbridg e component of p e rsonal computer chips e ts. the amd-768 peripher a l bus controller connects to a host memor y controlle r throu g h the pc i bus and provides a secondar y pc i - bus b r idge. host (primar y ) pc i bus u tilizing a 66mhz /32-bit interfa ce (pc i 2.2 compliant) s econdar y 33mhz /32-bit p c i bus interf ace (p c i 2 .2 compliant), including p c i bus arbite r with support for up to eight ex ternal devices ac ?97 soft audio controller 5 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 ports supports p i o modes 1?4 multi- wor d dma atap i two separ a te fi fos for dma ac cesses ohc i - based usb host i n cludes a root hub and s upports for four po rts supports specification ve rsion 1.1 ex tensive acpi -complia nt power mana g e m e nt log i c: prog r a mmable c2, c3, power-on - suspend states suspend-to-ram suspend-to-disk s o ft off st at es thr o ttling device monitors hardw a re t r aps s y ste m ina c tivit y time r 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 thir t y - t wo ge ner a l pur p ose i / o ( g p i o ) pins ( m a n y pins a r e multiple x e d with othe r ha r d - wired functions.) l e ga c y -at compa tible l o g i c : i n te rrupt controller (825 9-based) 5 t h e a m d - 768 peri ph eral bu s con t rol l e r does n o t s u pport a c ? 97 s o f t mode m . 8 amd-768? periph eral bus controller
pre lim i n ary inf o r m atio n 2449 4 a ? d ece m b er 2001 AMD-760? mpx chips e t overvi ew prog r a mmable i n te rval t imer (8254-bas e d) dma c ont rol l e r (for l p c bus) l e gac y ports r eal -ti m e c l ock (r tc ): 256 b y tes of cmos b a tter y - powe r ed ram acp i - c ompliant ex tensio ns i / o ap i c c ontroller support for distributed dma and seri al i r q pro t ocols smb u s c ontr o lle r with o n e smb u s por t random number gen e ra tor a 492-pin b ga p ack a g e ; 26x 26 b ga g r id; 35x 35 millimeters square b o th 2.5-volt core and 3. 3-volt output dr ivers; 5-volt tolerant input buffers amd-768? periph eral bus controller 9
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