Am33c93a Scsi-bus Interface Controller Timing 5

SELECT|NG A TARGET(ASAN NmATOR) Symbol tr,-oo tovlo t^*,

Charaderlsilc SEt OutLowto "OR-ED"tD Out "OR-ED"lD OutVa

Mln

W

--^*.ss*%'.

,:; ffi

,;; ffi

Mar

OutHigh

100

Unlts

us ns lts

ns ns

BSY

SI t stoo tovao ATN

AM

NOTE: Tgroup= signalsdrivenby a Target= Y6, dD, m,

REO

RESPONSETO SELECTTON(AS A TARGET)

bol tst-st t,us, ts"s. teLo ta*" tlvsH to,o

Characterlsilc

Mln

SEt In Lowro BS In High "OR-ED" lD ValidInto BSYIn Hi mLow,lDValid,m

Max Unlts

ffi 0 0 0 100

n High

to TgroupOut

ns ns us ns ns ns ns

BSY

ffit DBx

m AcK Tgroup NOTE: Tgroup= signalsdrivenby a Target= l/O, m,

m,

Am33C€3A

m

4.69

RESELECilNG AN INITTATOR(AS A TARGET)

Symbol

Gharacterlstlc SELOutLowto "OR-ED"lD Out "OR.ED"ID qfi V

trl* boo t,or* trou tr.r*

Unlts

r/o&

trs ns ns ns ns

1

400 100 t gttgv

BSY t BLSH

m DEx tovlo

t0 lgroup Tgrory NOTE: Tgrotlp = elgnalsdriven by a Target = ffi, m, nE fgro4 = signalsdriven by an Initiator= AIN, Am

RESPONSE (ASAN NmATOR) TO RESELECTION Symbol tst-e" tt o trLex teHao tnvelterBt. teLct tn-s* t*r"

Characterlstlc SEt tn Lowto ES h High "OR-ED"lD ValidInto ES In High lF tn Lowto BS h High SEt Low, lD Vatld, W lgroupValidgut t NI BS ib invalidIn

Mln

100 0.4 0 0 0

a

tffiEL In High

iflnrcEW out Hish

Max Unlts

200

ns ns ns ns ns Fs ns ns ns

t stgn

w

/

\ tgxgl- -=t

t etsx

SEL

tlvBt't+DS(

t BLot

C -X\

lefoup tltgH -rrr-

IHTIAVBT

-+l

ii6 Tgroup Tgroup- signalsdrivenby a Target.' dD, ilm, Fm jgoup - signalsdrtvenbyan Initlabr= ATN,mR *r EllSY willslill be drivenby theresebctingtarget.

+'m

Am33@3A

1r8s+fit0A

Symbol

Mln

Charactefistlc

Max

tsnpc tn-or tpcnrtou*.

lFiw tnxoH

REQ In Highto ACK Qrt High

tart"

Iffi'Out

0 0 0 0

High to Phase Change In

175

Unlts

ns ns ns ns ns ns ns ns ns

t ILDT

t6 Phase

Iffi

l,lOTE:Phase- signalsthatdefinethe bus phaseffi, Mm r185&031A

TRANSFERlN (ACTINGAS A TARGET) SEND ASYNCHRONOUSTNFORMATTON

Symbol

Characterlstlc

Mln

Max

tsxpc

SEL In Highto PhaseChangeOut

100

dd

t,loo

i6 Out Low to Data Out

tovnl

DataOutValidto Fffi ort

trcnl

PhaseChange

ffi **"*

lrc,ffi. m

* ( J^'uF'

tnurt-

ACK In Highlo PhaseChangeOut Am In High to F'ffi out Low

Am33C193A

0 0 0 100 0

175

175

Unlts ns ns ns ns ns ns ns ns ns ns

+71