AMBA_bus_rev1.ppt_0.odp

8/14/2019 AMBA_bus_rev1.ppt_0.odp

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Bus AMBA

Advanced Microcontroller Bus Architecture

(AMBA)

[email protected]

[email protected]

Rf: AMBA Specification

(Rev 2.0)

www.a!.co!

ARM "#" 00$$A
mailto:[email protected]://www.arm.com/http://www.arm.com/mailto:[email protected]


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What to see

AMBA %&%te! achitectue

'eivative% Bu% A#B ASB AB

*an%action%


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Bus hierarchies

Advanced Microcontroller Bus

Architecture (AMBA)

Advanced High-performance Bus (A#B) Advanced System Bus (ASB)

Advanced Peripheral Bus (AB).


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Typical System


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Advanced High-performance Bus(AHB)

*he AMBA A#B i% fo high-performance high clock

freuency system modules!

*he A#B act% a% the high+pefo!ance %&%te! backbone

bu%. A#B %uppot% the efficient connection of poce%%o% on+

chip !e!oie% an, off+chip e-tenal !e!o&

inteface% with low+powe peipheal !aco cell function%.

A#B i% al%o %pecifie, to en%ue ea%e of u%e in an efficient,e%ign flow u%ing %&nthe%i% an, auto!ate, te%t

techniue%.


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A,vance, S&%te! Bu%(ASB)

*he AMBA ASB i% fo high+pefo!ance

%&%te! !o,ule%.

AMBA ASB i% an altenative %&%te! bu%

%uitable fo u%e whee the high+pefo!ance

featue% of A#B ae not euie,.

ASB al%o %uppot% the efficient connection of

poce%%o% on+chip !e!oie% an, off+chipe-tenal !e!o& inteface% with low+powe

peipheal !acocell function%.


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A,vance, eipheal Bu%(AB)

*he AMBA AB i% fo low+powe

peipheal%.

AMBA AB i% opti!i/e, fo !ini!alpowe con%u!ption an, e,uce,

inteface co!ple-it& to %uppot

peipheal function%. AB can be u%e, inconunction with eithe ve%ion of the

%&%te! bu%.


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1bective% of the AMBA%pecification

*he AMBA %pecification ha% been ,eive, to

%ati%f& fou e& euie!ent%: to facilitate the right-first-time ,evelop!ent of

e!be,,e, !icocontolle po,uct% with one o!oe 34% o %ignal poce%%o%

to be technology-independent an, en%ue that

highl& eu%able peipheal an, %&%te! !acocell%

can be !igate, aco%% a ,ive%e ange of "3poce%%e% an, be appopiate fo full+cu%to!

%tan,a, cell an, gate aa& technologie%


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1bective% of the AMBA%pecification (2)

to encouage modular system design to

i!pove poce%%o in,epen,ence povi,ing

a ,evelop!ent oa,+!ap fo a,vance,

cache, 34 coe% an, the ,evelop!ent ofpeipheal libaie%

to !ini!i/e the %ilicon infa%tuctue

euie, to %uppot efficient on+chip an, off+chip co!!unication fo both opeation an,

!anufactuing te%t.


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AMBA AHB" ne# generationAdvanced High-performance Bus

AMBA A#B i!ple!ent% the featue% euie, fo

high+pefo!ance high cloc feuenc&

%&%te!% inclu,ing:

5 bu%t tan%fe%

5 split transactions

5 %ingle+c&cle bu% !a%te han,ove

5 %ingle+cloc e,ge opeation

5 non+ti%tate i!ple!entation

5 wi,e ,ata bu% configuation% (678$29 bit%).


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AHB $omponents

AHB master transfers initiator

AHB slave

AHB ar%iter multi-master AHB decoder centrali&ed decoder


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AHB" general vie#" multi-master


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AHB Master


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AHB Slave


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AHB Slave" mu' data


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AHB" simple transfert


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AHB" #ait


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AHB" multiples transfers


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AHB" e'amples of transfers


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ata %us" little endian


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AHB" central ar%iter


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$entrali&ed Ar%itration


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Ar%itration


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AHB decoder


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AHB" decoding" e'ample


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AMBA ASB" old generationAdvanced System Bus

bu%t tan%fe%

pipeline, tan%fe opeation

!ultiple bu% !a%te.


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ASB Master


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ASB Slave


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ASB decoder


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ASB ar%iter


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AMBA AB


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AB transferts

ite tan%fe Rea, tan%fe


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AB %ridge


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AB Slave


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AB" tri-state Bus availa%le depending on the implementation#rite cycle

AHB

AB


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AB" tri-state Bus availa%le depending on the implementationread cycle

AHB

AB

AMBA_bus_rev1.ppt_0.odp

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