Dolby Laboratories DP570 - page 33

Controlling the DP570 Using the GPI/O Connector
Dolby® DP570 Multichannel Audio Tool User’s Manual 21
Table 3 ‐7providesadescriptionfor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beedge‐triggered.TheActiveStatecolumnindicatestheDP570statethat
resultswhenthepinisforcedtothelogiclevelindicated,ifitislevel‐triggered.
BsspeakermuteaEither Either Mute IndicatesMuteisactive.
SpeakerSelecta
(Multi,Stereo,Mono)
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Vo lume =0dB.
a.NotavailableinunitswithouttheCat.No.548AnalogOptionCard.
Table 3-7 GPI 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/muteaEither 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Selecta
(Multi,Stereo,Mono)
Either Either Speakerselected Indicateswhichspeakerisselected.
Table 3-6 GPO Functions Available
Function Polarity Trigger Active State Description