TUSB6250 datasheet(68/124 Pages) TI

68 / 124 page

Miscellaneous and GPIO Configuration Registers

9−3

SLLS535A − January 2004

TUSB6250

9.2

PUPDSLCT_P2: GPIO Pullup and Pulldown Resistor Selection Register for Port 2

(XDATA at F08A)

The PUPDSLCT_P2 register allows the MCU to select either the pullup or pulldown resistors on the MCU

port 2 GPIO pins. To turn off both the pullup and pulldown resistors, the MCU has to configure the

corresponding bit in the PUPDPWDN_P2 register.

PUSEL [N] means the pullup/pulldown resistor selection for pin P2.N.

765

43210

RSV

PUSEL6

PUSEL5

PUSEL4

RSV

PUSEL0

R/O

R/W

R/O

R/W

BIT

NAME

RESET

FUNCTION

PUSEL0

Port 2 GPIO pin P2.0 pullup and pulldown resistor selection by the MCU.

S If the MCU sets this bit to 1, the pullup resistor is selected and the pulldown resistor is

deselected.

S If the MCU clears this bit to 0, the pulldown resistor is selected and the pullup resistor is

deselected.

The power-up default is the pullup resistor disabled and the pulldown resistor enabled for the P2.0

pin.

3−1

RSV

000b

Reserved

6−4

PUSEL [N]

(N = 4 to 6)

Port 2 GPIO pin P2.4–P2.6 pullup and pulldown resistor selection by the MCU.

S If the MCU sets this bit to 1, the pullup resistor is selected and the pulldown resistor is

deselected.

S If the MCU clears this bit to 0, the pulldown resistor is selected and the pullup resistor is

deselected.

The power-up default is the pullup resistor enabled and the pulldown resistor disabled for pins

P2.4–P2.6.

RSV

Reserved

TUSB6250 데이터시트(PDF) 68 Page - Texas Instruments

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