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6.3 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 and descriptions provided in each Signal Descriptions table, represent the pin

multiplexed signal function which is implemented at the pin and selected via PADCONFIG

registers. Device subsystems may provide secondary multiplexing of signal functions, which are

not described in these tables. For more information on secondary multiplexed signal functions,

see the respective peripheral chapter of the device TRM.

2. PIN TYPE: Signal direction and type:

• I = Input

• O = Output

• OD = Output, with open-drain output function

• IO = Input, Output, or simultaneously Input and Output

• IOD = Input, Output, or simultaneously Input and Output with open-drain output function

• IOZ = Input, Output, or simultaneously Input and Output with three-state output function

• OZ = Output with three-state output function

• A = Analog

• PWR = Power

• GND = Ground

• CAP = LDO Capacitor

3. DESCRIPTION: Description of the signal

4. BALL: Ball number(s) associated with signal

For more information on the IO cell configurations, see the Pad Configuration Registers section in Device

Configuration chapter of the device TRM.

6.3.1 ADC

Note

The ADC can be configured to operate as eight general-purpose digital inputs. For more information,

see Analog-to-Digital Converter (ADC) section in Peripherals chapter in the device TRM.

6.3.1.1 MAIN Domain

Table 6-2. ADC0 Signal Descriptions

SIGNAL NAME [1]

PIN TYPE [2]

DESCRIPTION [3]

ALV PIN [4]

ADC0_REFN (4)

ADC0 Negative Reference

J16

ADC0_REFP (4)

ADC0 Positive Reference

J15

ADC0_AIN0 (1) (2) (3)

ADC Analog Input 0 / GPIO1_80 (Input Only)

G20

ADC0_AIN1 (1) (2) (3)

ADC Analog Input 1 / GPIO1_81 (Input Only)

F20

ADC0_AIN2 (1) (2) (3)

ADC Analog Input 2 / GPIO1_82 (Input Only)

E21

ADC0_AIN3 (1) (2) (3)

ADC Analog Input 3 / GPIO1_83 (Input Only)

D20

ADC0_AIN4 (1) (2) (3)

ADC Analog Input 4 / GPIO1_84 (Input Only)

G21

ADC0_AIN5 (1) (2) (3)

ADC Analog Input 5 / GPIO1_85 (Input Only)

F21

ADC0_AIN6 (1) (2) (3)

ADC Analog Input 6 / GPIO1_86 (Input Only)

F19

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AM6442, AM6441, AM6421, AM6412, AM6411

SPRSP56D – JANUARY 2021 – REVISED JULY 2022

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