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TPS23730: TPS23730

MOHAMED IBRAHIM S.S
Prodigy 30 points
Part Number: TPS23730

Hi Team,

The encoding can be either parallel or serial selectable with SCDIS input in TPS23730. Please throw some light on the difference between parallel encoding and serial encoding.

  • 0
    TI__Genius 15275 points

    Hi Mohamed,

    SCDIS is the TPL serial code disable where being left open configures for parallel encoding and being pulled to VSS for serial encoding. Parallel encoding allows for the state of TPH and TPL to provide information relative to the allocated power. Parallel encoding uses various combinations between TPH,TPL, and BT pins to tell information about PSE Type, PD Class and the allocated power. To understand the configurations, I will point you to the truth table Table 8-2 in the data sheet.

    Serial encoding disables TPH and BT pins to provide the above information directly out of TPL pin only. Serial encoding is used here since TPL is the only pin providing information on the system. I will point you to Table 8-3 in the data sheet for the truth table. 

    There are pros and cons to each of these configurations and will mostly depend on how customer intends to use these pins. Typically we see parallel encoding used to drive LED's to visually display information about power allocation. Serial encoding can be used to relay information to MCU/CPU through singular input. 

    Very Respectfully,

    Brandon Beader