BD4153EFV-E2(2008) データシートの表示（PDF） - ROHM Semiconductor

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BD4153EFV-E2
(Rev.:2008)

Power Switch for ExpressCard™

ROHM Semiconductor 

●TIMING CHART

Power ON/OFF Status of ExpressCardTM

System Status

Primary

Auxiliary

ExpressCARDTM Module

Status

Power Switch Status

Primary

Auxiliary

OFF

ON

ON

OFF

ON

ON

Don’t Care

De-asserted

Asserted

De-asserted

Asserted Before This

Asserted After This

OFF

OFF

ON

OFF

OFF

OFF

OFF

OFF

ON

OFF

ON

OFF

ExpressCardTM States Transition Diagram

SYSR=H⇔L

CP#=H

SYSR=L

CP#=H⇔L

V3AUX=OFF

V15=V3=OFF

SYSR=H

CP#=H→L

SYSR=Ｌ→Ｈ

CP#=L

V3AUX=ON

V15=V3=ON

SYSR=L

CP#=L ⇔

SYSR=H

CP#=Ｌ→Ｈ

SYSR=H→L

CP#=L

SYSR=H

CP#=H

SYSR=L

CP#=Ｌ→Ｈ

SYSR=H→L

CP#=L

SYSR=L→H

CP#=L

V3AUX=ON

V15=V3=OFF

Stand-by Status

ON Status

System Status

:SYSR=L

:SYSR=H

From ON to Stand-by Status :SYSR=H→L

From Stand-by to ON Status :SYSR=L→H

Card Status

CardAsserted Status

:CP#=L

Card De-asserted Status

:CP#=H

From De-asserted to Asserted Status :CP#=H→L

From Asserted to De-asserted Status :CP#=L→H

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