Changes between Version 8 and Version 9 of venice/DigitalIO


Ignore:
Timestamp:
02/16/2024 11:28:02 PM (9 months ago)
Author:
Ryan Erbstoesser
Comment:

add termination information

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  • venice/DigitalIO

    v8 v9  
    1212
    1313See the operating manual "Specifications", "Electrical" section for information on DIO max and min driving strength.
     14
     15''' Note on Termination '''
     16
     17Most of the standard DIO lines below (labeled DIO0,DIO1,DIO2,etc) which are connected to the i.MX8M SoC:
     18 * Operate on 3.3V logic
     19 * Have a 332-ohm series resistor for limiting current.
     20 * Have a 390 pF capacitor for debounce
     21 * Have a ESD TVS Diode
     22 * Have a 4.75k ohm pull up resistor to 3.3
     23 * Have an internal weak pulldown at approximately 30-40k ohm.
     24 * Exceptions:
     25  * GW71xx only has a series limiting resistor (no cap or TVS or pullup)
     26 
     27Please contact Gateworks support if more information is required about a specific SBC.
    1428
    1529Venice DIO Mapping: