DRA821 datasheet(39/228 Pages) TI

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7.3 Signal Descriptions

Many signals are available on multiple pins, according to the software configuration of the pin multiplexing

options.

The following list describes the column headers:

1. SIGNAL NAME: The name of the signal passing through the pin.

Note

Signal names provided in each Signal Descriptions table, (Table 7-1 through Table 7-106)

represent the pin layer multiplexed signal function which is selected via the PADCONFIG registers.

Device subsystems may provide an additional layer of signal multiplexing, which means the signal

names described in these tables may have additional signal functions. For more information, see

the respective peripheral chapter of the device TRM.

2. DESCRIPTION: Description of the signal

3. PIN TYPE: Signal direction and type:

• I = Input

• O = Output

• IO = Input or Output

• IOD = Open drain terminal - Input or Output

• IOZ = Input, Output or Three-state terminal

• OZ = Output or Three-state terminal

• A = Analog

• PWR = Power

• GND = Ground

• CAP = LDO Capacitor

4. BALL: Associated balls bottom

For more information on the I/O cell configurations, see Pad Configuration Registers section in Device

Configuration chapter of the device TRM.

7.3.1 ADC

Note

The ADC can be configured to be used as a GPI. For more information, see Analog-to-Digital

Converter (ADC) section in Peripherals chapter in the device TRM.

7.3.1.1 MCU Domain

Table 7-2. ADC0 Signal Descriptions

SIGNAL NAME [1]

DESCRIPTION [2]

PIN TYPE

[3]

BALL [4]

MCU_ADC0_AIN0

ADC Analog Input 0

H17

MCU_ADC0_AIN1

ADC Analog Input 1

K18

MCU_ADC0_AIN2

ADC Analog Input 2

M17

MCU_ADC0_AIN3

ADC Analog Input 3

L18

MCU_ADC0_AIN4

ADC Analog Input 4

J18

MCU_ADC0_AIN5

ADC Analog Input 5

J17

MCU_ADC0_AIN6

ADC Analog Input 6

K17

MCU_ADC0_AIN7

ADC Analog Input 7

L17

MCU_ADC_EXT_TRIGGER0

ADC Trigger Input

C12, C20, D13

MCU_ADC_EXT_TRIGGER1

ADC Trigger Input

B12, B16, C16

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DRA821U, DRA821A

SPRSP57A – APRIL 2020 – REVISED OCTOBER 2020

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