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4.8Reset
4.8.1ResetElectricalData/Timing
TMS320C6727,TMS320C6726,TMS320C6722
Floating-PointDigitalSignalProcessors
SPRS268E–MAY2005–REVISEDJANUARY2007
Ahardwarereset(RESET)isrequiredtoplacetheDSPintoaknowngoodstateoutofpower-up.The
RESETsignalcanbeasserted(pulledlow)priortorampingthecoreandI/Ovoltagesorafterthecore
andI/Ovoltageshavereachedtheirproperoperatingconditions.Asabestpractice,RESETshouldbe
heldlowduringpower-up.PriortodeassertingRESET(low-to-hightransition),thecoreandI/Ovoltages
shouldbeattheirproperoperatingconditions.
Table4-1assumestestingoverrecommendedoperatingconditions.
Table4-1.ResetTimingRequirements
NO.MINMAXUNIT
1t
w(RSTL)
Pulsewidth,RESETlow100ns
2t
su(BPV-RSTH)
Setuptime,bootpinsvalidbeforeRESEThigh20ns
3t
h(RSTH-BPV)
Holdtime,bootpinsvalidafterRESEThigh20ns
PeripheralandElectricalSpecifications 38SubmitDocumentationFeedback