Datasheet

Figure 18-2. ADC Module Block Diagram
Analog Inputs
(AINx)
Trigger Events
SS0 Interrupt
SS1 Interrupt
SS2 Interrupt
SS3 Interrupt
ADCISC
ADCRIS
ADCIM
Interrupt Control
ADCDCISC
SS0
SS1
SS2
SS3
Comparator
GPIO
Timer
PWM
Comparator
GPIO
Timer
PWM
Comparator
GPIO
Timer
PWM
Comparator
GPIO
Timer
PWM
ADCEMUX
ADCPSSI
Digital
Comparator
ADCSSOPn
ADCSSDCn
ADCDCCTLn
ADCDCCMPn
Analog-to-Digital
Converter
Hardware Averager
ADCSAC
ADCSSFSTAT0
ADCSSCTL0
ADCSSEMUX0
Sample
Sequencer 0
ADCSSFSTAT1
ADCSSCTL1
ADCSSEMUX1
Sample
Sequencer 1
ADCSSFSTAT2
ADCSSCTL2
ADCSSEMUX2
Sample
Sequencer 2
ADCSSFSTAT3
ADCSSCTL3
ADCSSEMUX3
Sample
Sequencer 3
PWM Trigger
DC Interrupts
VDDA/GNDA
External Voltage Ref
FIFO Block
ADCSSFIFO0
ADCSSFIFO1
ADCSSFIFO2
ADCSSFIFO3
ADCDCRIC
ADCSSMUX0
ADCSSMUX3
ADCSSMUX1
ADCSSMUX2
Control/Status
ADCUSTAT
ADCOSTAT
ADCACTSS
ADCSSPRI
ADCSPC
ADCPP
ADCPC
ADCTSSEL
ADCCC
18.2 Signal Description
The following table lists the external signals of the ADC module and describes the function of each.
The AINx signals are analog functions for some GPIO signals. The column in the table below titled
"Pin Mux/Pin Assignment" lists the GPIO pin placement for the ADC signals. These signals are
configured by clearing the corresponding DEN bit in the GPIO Digital Enable (GPIODEN) register
and setting the corresponding AMSEL bit in the GPIO Analog Mode Select (GPIOAMSEL) register.
For more information on configuring GPIOs, see “General-Purpose Input/Outputs
(GPIOs)” on page 771. The VREFA+ and VREFA- signals (with the word "fixed" in the Pin Mux/Pin
Assignment column) have a fixed pin assignment and function and are not 5-V tolerant.
Table 18-1. ADC Signals (212BGA)
DescriptionBuffer TypePin TypePin Mux / Pin
Assignment
Pin NumberPin Name
Analog-to-digital converter input 0.AnalogIPE3G2AIN0
Analog-to-digital converter input 1.AnalogIPE2G1AIN1
Analog-to-digital converter input 2.AnalogIPE1H2AIN2
Analog-to-digital converter input 3.AnalogIPE0H3AIN3
Analog-to-digital converter input 4.AnalogIPD7B2AIN4
Analog-to-digital converter input 5.AnalogIPD6B3AIN5
Analog-to-digital converter input 6.AnalogIPD5B4AIN6
Analog-to-digital converter input 7.AnalogIPD4A4AIN7
December 13, 20131202
Texas Instruments-Advance Information
Analog-to-Digital Converter (ADC)