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Dolby Laboratories DP570 Stereo System User Manual

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DP570 Multichannel Audio Tool User’s Manual

Controlling the DP570 Using the GPI/O Connector

3.6.2 Assigning GPI/O Functions to Specific Pins

TheGPI/Oportisafemale37‐pinD‐connector.SeeFigure 3‐7toidentifypinnumbers.

Figure 3-7 GPI/O Pin Numbers

Table 3‐8showsthepinsthatareavailableforGPOandGPIfunctions.

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Level

a



Either Level 0dB IndicatesMasterVolume=0dB.

a.NotavailableinunitswithouttheCat.No.548AnalogOptionCard.

Table 3-8 GPI/O Pins Available

Pin Function Pin Function

1+5V(150mA)

2Faultoutput

Lowpolarity

Level‐triggered

Activestate:Fault

20 VolumeControlShaftEncoder

Ainput

Highpolarity

Edge‐triggered

3Erroroutput

Highpolarity

Level‐triggered

Activestate:Error

21 VolumeControlShaftEncoder

Binput

Highpolarity

Edge‐triggered

4User‐definedoutput 22 VolumeControlShaftEncoder

presentinput

Lowpolarity

Level‐triggered

Activestate:VolumeControl

ShaftEncoder

present

5

Solotallyoutput

a

Highpolarity

Level‐triggered

Activestate:Enabled

23 User‐definedinput

Table 3-7 GPI Functions Available

Function Polarity Trigger Active State Description

GP I/O

1

19

37 20

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