Quiz 8 - DAC

Which three output ports are supported by the Texas DAC peripheral?

• Port A, Port B and Port C

• Port A, Port B and Port E

• Port A, Port D and Port E

• Port A, Port B and Port D

Find out the resolution of 8 bit DAC/ADC?

• 562

• 256

• 625

• 265

Which DAC is lower conversion speed?

• R-2R Ladder DAC

• Binary Weighted DAC

• R-R Ladder DAC

• None of the above

What is the disadvantage of binary-weighted type DAC?

• Requires a wide range of resisters

• High operating frequency

• High power consumption

• Slow switching

How to overcome the limitation of binary-weighted resistor type DAC?

• Multiplying DACs

• Using R-2R ladder type DAC

• Using monolithic DAC

• Using hybrid DAC

What kind of register is used to perform input/output on the port?

• Data register

• Enable register

• Alternate function register

• Direction register

During the port initialization, the value  of 0, 1 on the bits of the direction register, represents correspondingly

• Analog pin, Digital pin

• Digital pin, Analog pin

• Output pin, Input pin

• Input pin, Output pin

Which GPIO port requires a special unlocking procedure (writing to GPIOLOCK and GPIOCR registers) before its pins can be configured, particularly when using pins PF0, PD7, or RST?

• Port A

• Port B

• Port F

• Port E

Before configuring the direction (DIR) or enabling digital functionality (DEN) of a GPIO pin on the TM4C123GH6PM, what is the first necessary step in the initialization sequence?

• Set the GPIOAFSEL register to 0.

• Enable the clock for the specific GPIO port in the SYSCTL_RCGCGPIO_R register.

• Unlock the GPIO Port using the GPIOLOCK register

• Configure the drive strength using GPIODR2R

To configure a pin as an input with an internal pull-up resistor (e.g., for a button connected to Ground), which register should be set to 1 in addition to clearing the GPIODIR bit?

• GPIODR8R

• GPIOPUR

• GPIOPDR

• GPIOODR