Intel 386 manual In+-I

I"n+-I	®	DRAM PLD DESCRIPTIONS
'e-

state_dl~gram

[RASI

state

[01:

If

(RA4

RA3' RA2 , RAl , RAO) then 1

e 15e

[0 I ;

state

[11:

If (RA4 , RA3 , RA2 , RAl , RAO) then [01

e I s e

[1 I ;

5t~te_dlagr~m

[RAGI

state

[01:

If (RAS , RA4 , RA3 & RA2 & RAl &RAO) then 1

e I s e

[0 I ;

state

[11:

If (RAS , RA4 , RA3 & RA2 , RAl , RAO) then [01

e I s e

[1

I ;

state_diagram

[RA71

state

[01:

RAS , RA4 , RA3 , RA2 & RAl

& RAO)

then

1

If

(RAG

else

[0];

state

[11:

& RA4

& RA2

& RAl

& RAO)

If

(RAG'

RAS

,

RA3

then

[01

e I s e

[1

I ;

state_dlaQram

[RA81

state

[01:

(RA7

RAG

& RAS

& RA4

& RA3

& RA2

& RAl

&

if

RAO)

then

1

e I s e

[0 I ;

state

[11:

& RAS

& RA3

& RA2

& RAl

&

If

(RA7

,

RAG

,

RA4

RAO)

then

[0]

e I s e

[1

I ;

test_vectors ([clkl .. [RA8,RA7,RAG,RAS,RA4,RA3,RA2,RA1,RAO])

[cl ..

[x,O,O,O,O,O,O,O,OI

"0

[el

-+

[x,I,x,x,x,x,x,x,1]

[cl ..

[x,x,x,x,x,x,x,l,OI

[c]-+ [X,X,I,X,X,X,x,x,x]

[el ... [X,I,X,X,X,x,x,x,x]

[el	..	[x,x,x,x,x,x,x,x,x]	liS
[el	...	[X,X,X,I,X,X,X,x,x]
[el	...	[x,X,X,X,I,X,X,X,x]
( c] .. , [x 1 X I X I X I X 1 X I X I x'J X ] 1
[col ... (x,x.,X,X,I,X,X,X,x];
[cl	..	[0,0,0,0,0,1,0,1,01;	"10
[el	..	[x,x,x,x,x,x,x,x,x];
[el	...	[X,I,X,X,X,x,x,x,x];
(el	...	[X,I,X,X,X,x,x,x,x];
[el	...	[X,I,X,X,X,x,x,x,x];
[cl	..	[x,x,x,x,x,l,l,l,ll;	"lS

end refaddr;

Figure 8-4. Refresh Address Counter PLD Equations (Contd.)

8-14