Dolby Laboratories DP570 3.6 Using the GPI/O Connector

18 Dolby® DP570 Multichannel Audio Tool User’s Manual
Controlling the DP570
3.6 Using the GPI/O Connector
YoucanusethisporttoconnecttheDP570toyourstudioconsoleorexistingcontrol
equipment.Astand‐aloneremotecontrolunit,theCat.No.549GPI/OController,isalso
availabletoprovideeasyaccesstothefeaturesoftheGPI/Oport.Byassigningspecific
functionstotheuser‐definablepins,youcancontrolandobtainstatusfromtheDP570.
ManyfunctionsalsoallowyoutoadapttheDP570toyourexistingenvironmentby
definingthetypeandpolarityoftheinputoroutputlogic.
3.6.1 Selecting GPI/O Functions
Table 3 ‐6liststhefunctionsthatcanbeassignedtoGPOpins.Somefunctionshave
restrictionsonthepolarityortriggertype.TheActiveStatecolumnindicatestheDP570
statethatcauseslevel‐triggeredpinstobeforcedtothelogiclevelindicatedinthePolarity
columnofthetable.Forexample,whentheDP570entersEmulatorBypassmode,theGPO
pingoeshigh.WhentheunitisnolongerinBypassmode,thepingoeslow.
Table 3 ‐7liststhefunctionsthatcanbeassignedtoGPIpins.Somefunctionshave
restrictionsonthepolarityortriggertype.GPIfunctionsthataremutuallyexclusivemust
Table 3-6 GPO Functions Available
Function Polarity Trigger Active State Description
VRef Either Either VReferror Nosignalorinvalidsignal.(Checkforproper
termination.)
Metadatain1 Either Either Metadataerror InvalidsignalwhileunitisinExternal
Metadatamode.
Metadatain2 Either Either Metadataerror InvalidsignalwhileunitisinExternal
Metadatamode.
EmulatorbypassEither Either Bypass IndicatesBypassisactive.
DelayLEDEither Either On Notyetimplemented.
Lt/Rtinput Either Either Enabled IndicatesLt/Rtinputisactive.
Dim/mutea
a AvailableonlyinunitswiththeCat.No.548AnalogOutputCard.
Either Either Enabled IndicatesDimGainsettingisactive.
SurroundEX™Either Either EXon IndicatesSurroundEXisactive.
ProLogic®Either Either ProLogicon IndicatesProLogicisactive.
LspeakermuteaEither Either Mute IndicatesMuteisactive.
RspeakermuteaEither Either Mute IndicatesMuteisactive.
CspeakermuteaEither Either Mute IndicatesMuteisactive.
SWspeakermuteaEither Either Mute IndicatesMuteisactive.
LsspeakermuteaEither Either Mute IndicatesMuteisactive.
RsspeakermuteaEither Either Mute IndicatesMuteisactive.
BsspeakermuteaEither Either Mute IndicatesMuteisactive.
SpeakerSelect
(Multi,Stereo,Mono)a
Either Either Speakerselected Indicateswhichspeakerisselected.
ProgramSelect(1–8)Either Either Enabled Indicateswhichprogramisselected.
PresetSelect(1–32) Either Either Enabled Indicateswhichpresetisselected.
DownmixMode
(Full,Stereo,Mono,
Phant,3‐Stereo)
Either Either Enabled Indicateswhichmodeisselected.
DynamicRange
ControlMode
(Line,RF,Custom)
Either Either Enabled Indicateswhichcompressionmodeisselected.
ReferenceLevelaEither Level 0dB IndicatesMasterVol ume=0dB.