Datasheet

20
Note:
1.Thisiscurrentcapabilityperpowerpin.
2.ThesepinsareconnectedtotheSoCdirectly.Theyareopen-drain(eitherpulledup
ordrivenlowbytheSoCwhenconfiguredasoutputs).Themaxdrivethatmeetsthe
datasheetVOLis±2mA.
3.ThesepinsconnecttoTITXB0108leveltranslators.Duetothedesignofthese
devices, theoutputdriversareveryweak,sotheycanbeoverdrivenbyanother
connecteddeviceoutputforbidirectionalsupport.
4.IntheType/Dircolumn,outputistoexpansionheader.Inputisfromexpansion
header.Bidirisforbidirectional signals.Wheretwodirectionsareshown,thefirstis
fortheprimaryfunction(mostlyGPIOs)andthesecondisforthealternatefunction.
5.Wherethesignaldirectionisinputoroutputinthistable(Table3-3),thismatches
thetypicalspecialfunctionusage(e.g.SPI,I2S,etc.).Thedirectionisbidirectionalif
theseareconfiguredasGPIOs.
6.All signalsonthe40-pinheaderare3.3Vlevels.