Intel 386 manual Ras

DRAM PLD DESCRIPTIONS

refresh address counter pal intel corporation Equations for Module refaddr

Device U3S

-Reduced Equations:

RAO :" !CRAO);

RA1 :, !CRAO & RA1 # !RAO & !RA1);

RA2 :" !(RAO RA1 & RA2 , !RAO & !RA2 I !RA1 & !RA2);

RA3 : ' ! ,( RA0 & RA1 & RA2 RA3 , !RAO & !RA3

! RA1 & ! RA3

I! RA2 & !RA3);

RA4 : '

RAS : .

RAG : .

RA7 : '

RAe : .

!,( RA0 & RA1 & RA2 & RA3 & RA4

,! RA0 & ! RA4

,! RA1 & ! RA4

,! RA2 & ! RA4

!RA3 & ! RA4) ;

!,( RA0 & RA1 & RA2 & RA3 & RA4 & RA5

,! RA0 ! RA5

!RA 1 & !RAS

,	!RA2		!RAS
	! RA3		! RA5
	!RA4 & ! RAS) ;
!(RAO &		RA1 & RA2 & RA3 & RA4 & RA5 & RAG
,	!RAO	&	!RAG
,	! RA1	&	! RAG
,	!RA2	&	! RAG
I	! RA3		! RAG
,	!RA4		!RAG
,	! RA5		! RAG) ;

,RA0 & RA1 & RA2 & RA3 & RA4 & RAS & RAG & RA7

!RA0 ! RA7

!RA1 ! RA7

,! RA2 !RA7

!RA3 ! RA7

!RA4 !RA7

,!RAS !RA7

!RAG ! RA7> ;

!,( RA0 & RA 1 & RA2 & RA3 & RA4 & RAS & RAG & RA7 & RAe

!RAO !RAe

!RA1 ! RAe

!RA2 ! RAe!C

!RA3 ! RAe

!RA4 ! RAe

I ! RA5 ! RAe

,I ! RAG ! RAe

!RA7 ! RAe) ;

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

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