Yamaha DBR15 - Starting Sequence; Power-On Starting Sequence Flowchart

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DBR10/DBR12/DBR15
Todebuggingmode
Todiagnosismode
IsUART-0
connected?
YES
NO
Isdebuggingmodestarting
switchturnedon?
［POWERLED］turnedon
［PROTECTIONLED］turnedon
DSPinitialized（resettingcancelled）
（/DSP-RES）
ADCpowerdowncancelled
（/AD-PDWN）
DSPboot•initializingprocess
DSPmuteprocess
AMPENABLE
（AMP-ENA）
DSPmutecancelled
NO
YES
DACmutecancelled
100msecfromthe
ADCpowerdowncancelled
LINEoutputmutecancelled
（LINE-MUTE）
［PROTECTIONLED］turnedoff
Modelnumber
Notset?
NO
Isitdiagnosticmode?
YES
StartsasDBR15.

NO
YES
Internaldatainitialized
Soundoutputstarted
IsFLASHrewritingmode
startingswitchturnedon?
NO
YES
PowerON（Reset）
ToFLASHrewritingmode（Built-inROMBootLoader）
Tomodelnumber
settingmode

STARTING SEQUENCE