Ouster OS2 - MULTIPURPOSE_IO (M_IO); OS2 CAD files

5.2 MULTIPURPOSE_IO(M_IO)
MULTIPURPOSE_IO (M_IO) is a configurable input or output channel accessible within the Interface Box
JumperJ4connectedtotheMULTIPURPOSE_IOpinoftheInterfaceBox. Detailedinformationonhow
toconfigurethischannelusingthesensorTCPinterfacecanbefoundintheAPIGuide. Bydefaultthis
channelisdisabled.
WhenthischannelisconfiguredasanOUTPUT,theM_IO sendsapulsesequencethatcanbeusedfor
timesynchronizationoreventtriggeringoutsidethesensor. Forafulldescriptionofoutputpulsetrig-
geringoptions,refertotheSoftwareUserManualformoreinformation. Thisoutputisanopto-isolated
opencollectorcircuit,relyingonanexternallyprovidedpull-upresistor. Thisresistorisprovidedfora
typical3.3V/5Vapplicationas partof theInterfaceBoxcircuitry.
Table5.2: MULTIPURPOSE_IO-OUTPUT InterfaceRequirements
Parameter Min Max
PullUpVoltage 3.3V 24V
SinkingCurrent N/A 25mA
When this channel is configured as an INPUT, the M_IO can accept a standardNMEA$GPRMCUART
message. These messages are a common way for GPS systems to share timestamp information in
UTC time format. Moreinformation onthispacket structureand supportedbaud ratescanbefound
intheTimeSynchronizationsection oftheSoftwareUser Manual.
Table5.3: MULTIPURPOSE_IO-INPUTInterfaceRequirements
Parameter MinVoltage MaxVoltage MinDriverCurrent
LOGICLOW -30V 2V N/A
LOGICHIGH 2.9V 30V 3mA @3.3V~5V, 5mA
at24Vandhigher
Abovearetestedwith 35m (200uH inductance) cableInterface Box connection at115200 Baudrate.
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