DRA821U2...ALM datasheet(47/252 Pages) TI

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For drive strength of the associated output buffer, refer to Section 7.6, Electrical Characteristics.

12. PULL UP/DOWN TYPE: Indicates the presence of an internal pullup or pulldown resistor. Pullup and pulldown resistors can be enabled or disabled

via software.

• PU: Internal pullup

• PD: Internal pulldown

• PU/PD: Internal pullup and pulldown

• An empty box means No pull.

13. DSIS: The deselected input state (DSIS) indicates the state driven on the peripheral input (logic "0", logic "1", or "pad" level) when the peripheral pin

function is not selected by any of the PINCNTLx registers.

• 0: Logic 0 driven on the input signal port of the peripheral.

• 1: Logic 1 driven on the input signal port of the peripheral.

• pad: Logic state of the pad is driven on the input signal port of the peripheral.

• An empty box means Not Applicable.

14. RXACTIVE / TXDISABLE: This column indicates the default value of the RXACTIVE / TXDISABLE bits in the PADCONFIG register.

• RXACTIVE: 0 = receiver disabled, 1 = receiver enabled.

• TXDISABLE: 0 = driver enabled, 1 = driver disabled.

• An empty box means Not Applicable.

Note

Configuring two pins to the same input signal is not supported as it can yield unexpected results. This can be easily prevented with the

proper software configuration (HiZ mode is not an input signal).

Note

When a pad is set into a multiplexing mode which is not defined by pin multiplexing, that pad’s behavior is undefined. This should be

avoided.

15. IO RET: Indicates if wakeup and IO retention are supported.

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DRA821U-Q1

SPRSP57D – APRIL 2020 – REVISED DECEMBER 2022

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