Intel 386 manual Figure B-3. DRAMP2 PLD Equations Contd

DRAM PLD DESCRIPTIONS

80386 Interleaved DRAM Controller pld-l pipelined lws Equations for Module DRAM_CONTROLLER_FOR_80386

Device U34

- Reduced Equations:

!refin := (!refin & !refreq
	* !qr
	* pclk	& !rasO	& !rasl	& refin
	* pclk	& refin	& reset
	* !pclk & !refin);
!qr	(!pclk & !qr & !refin
	* !qr & !refin & refreq & !reset
	* pclk	& qr & !rasO & !rasl & refin & !reset);
! rasOp	(!pclk	& ! rasOp	* pclk	& ! rasO) ;
!raslp	(!pclk	& !raslp	* pclk	& !rasl);

!we := (dramstart & !we * pclk & !we * !dramstart & !pclk & w_r);

!dramrdy := (!dramrdy & !pclk * !ale & dramrdy & !muxoe & pclk);

leas := (!ale & dramrdy & !reset

*!ale & !pclk

*!ale & cas

*cas & pclk & rasO & !rasl & !w_r

*cas & pclk & !rasO & rasl & !w:..r) ;

!ale := (!ale & dramrdy & !reset

t!ale & !pclk

t !ale & cas

* cas & pclk & rasO & !rasl

It cas & pclk & !rasO & rasl);

.Figure B-3. DRAMP2 PLD Equations (Contd.)

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