Datasheet

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.
20