Datasheet

Note:Currentlythisinterfaceisunsupported.Ifyouneedthisfeatureforaproduct,please contact
Particle.
ThePhotonsupportscoexistencewithBluetoothandotherexternalradiosviathethreegoldpads
onthetopsideofthePCBnearpinA3.Thesepadsare0.035"square,spaced0.049"apart.This
spacingsupportsthepossibilityoftackingonasmall1.25mm-1.27mmpitch3-pinmaleheaderto
makeitsomewhateasiertointerfacewith.
Whentworadiosoccupyingthesamefrequencybandareusedinthesamesystem,suchasWi-Fi
andBluetooth,acoexistenceinterfacecanbeusedtocoordinatetransmitactivity,toensure
optimalperformancebyarbitratingconflictsbetweenthetworadios.
Pad# PØPinName PØPin# I/O Description
1 BTCX_RF_ACTIVE 9 I SignalsBluetoothisactive
2 BTCX_STATUS 10 I SignalsBluetoothprioritystatusandTX/RXdirection
3 BTCX_TXCONF 11 O OutputgivingBluetoothpermissiontoTX
WhenthesepadsareprogrammedtobeusedasaBluetoothcoexistenceinterface,they'resetas
highimpedanceonpowerupandreset.
EXTERNALCOEXISTENCEINTERFACE