
18 Dolby® DP570 Multichannel Audio Tool User’s Manual
Controlling the DP570
3.6 Using the GPI/O ConnectorYoucanusethisporttoconnecttheDP570toyourstudioconsoleorexistingcontrol
equipment.Astand‐aloneremotecontrolunit,theCat.No.549GPI/OController,isalso
availabletoprovideeasyaccesstothefeaturesoftheGPI/Oport.Byassigningspecific
functionstotheuser‐definablepins,youcancontrolandobtainstatusfromtheDP570.
ManyfunctionsalsoallowyoutoadapttheDP570toyourexistingenvironmentby
definingthetypeandpolarityoftheinputoroutputlogic.
3.6.1 Selecting GPI/O Functions
Table 3 ‐6liststhefunctionsthatcanbeassignedtoGPOpins.Somefunctionshave
restrictionsonthepolarityortriggertype.TheActiveStatecolumnindicatestheDP570
statethatcauseslevel‐triggeredpinstobeforcedtothelogiclevelindicatedinthePolarity
columnofthetable.Forexample,whentheDP570entersEmulatorBypassmode,theGPO
pingoeshigh.WhentheunitisnolongerinBypassmode,thepingoeslow.
Table 3 ‐7liststhefunctionsthatcanbeassignedtoGPIpins.Somefunctionshave
restrictionsonthepolarityortriggertype.GPIfunctionsthataremutuallyexclusivemust
Table 3-6 GPO Functions Available
Function Polarity Trigger Active State Description
VRef Either Either VReferror Nosignalorinvalidsignal.(Checkforproper
termination.)
Metadatain1 Either Either Metadataerror InvalidsignalwhileunitisinExternal
Metadatamode.
Metadatain2 Either Either Metadataerror InvalidsignalwhileunitisinExternal
Metadatamode.
EmulatorbypassEither Either Bypass IndicatesBypassisactive.
DelayLEDEither Either On Notyetimplemented.
Lt/Rtinput Either Either Enabled IndicatesLt/Rtinputisactive.
Dim/mutea
a AvailableonlyinunitswiththeCat.No.548AnalogOutputCard.
Either Either Enabled IndicatesDimGainsettingisactive.
SurroundEX™Either Either EXon IndicatesSurroundEXisactive.
ProLogic®Either Either ProLogicon IndicatesProLogicisactive.
LspeakermuteaEither Either Mute IndicatesMuteisactive.
RspeakermuteaEither Either Mute IndicatesMuteisactive.
CspeakermuteaEither Either Mute IndicatesMuteisactive.
SWspeakermuteaEither Either Mute IndicatesMuteisactive.
LsspeakermuteaEither Either Mute IndicatesMuteisactive.
RsspeakermuteaEither Either Mute IndicatesMuteisactive.
BsspeakermuteaEither Either Mute IndicatesMuteisactive.
SpeakerSelect
(Multi,Stereo,Mono)a
Either Either Speakerselected Indicateswhichspeakerisselected.
ProgramSelect(1–8)Either Either Enabled Indicateswhichprogramisselected.
PresetSelect(1–32) Either Either Enabled Indicateswhichpresetisselected.
DownmixMode
(Full,Stereo,Mono,
Phant,3‐Stereo)
Either Either Enabled Indicateswhichmodeisselected.
DynamicRange
ControlMode
(Line,RF,Custom)
Either Either Enabled Indicateswhichcompressionmodeisselected.
ReferenceLevelaEither Level 0dB IndicatesMasterVol ume=0dB.