AM3351 datasheet(18/252 Pages) TI1

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AM3359, AM3358, AM3357, AM3356, AM3354, AM3352, AM3351

SPRS717J – OCTOBER 2011 – REVISED APRIL 2016

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Terminal Configuration and Functions

4.2

Pin Attributes

The AM335x and AMIC110 Sitara Processors Technical Reference Manual and this document may

reference internal signal names when discussing peripheral input and output signals because many of the

AM335x package terminals can be multiplexed to one of several peripheral signals. The following table

has a Pin Name column that lists all device terminal names and a Signal Name column that lists all

internal signal names multiplexed to each terminal which provides a cross reference of internal signal

names to terminal names. This table also identifies other important terminal characteristics.

(1) BALL NUMBER: Package ball numbers associated with each signals.

(2) PIN NAME: The name of the package pin or terminal.

Note: The table does not take into account subsystem terminal multiplexing options.

(3) SIGNAL NAME: The signal name for that pin in the mode being used.

(4) MODE: Multiplexing mode number.

Mode 0 is the primary mode; this means that when mode 0 is set, the function mapped on the terminal corresponds to the name of

the terminal. There is always a function mapped on the primary mode. Notice that primary mode is not necessarily the default

mode.

Note: The default mode is the mode at the release of the reset; also see the RESET REL. MODE column.

Modes 1 to 7 are possible modes for alternate functions. On each terminal, some modes are effectively used for alternate

functions, while some modes are not used and do not correspond to a functional configuration.

(5) TYPE: Signal direction

–

I = Input

–

O = Output

–

I/O = Input and Output

–

D = Open drain

–

DS = Differential

–

A = Analog

–

PWR = Power

–

GND = Ground

Note: In the safe_mode, the buffer is configured in high-impedance.

(6) BALL RESET STATE: State of the terminal while the active low PWRONRSTn terminal is low.

–

0: The buffer drives VOL (pulldown or pullup resistor not activated)

0(PD): The buffer drives VOL with an active pulldown resistor

–

1: The buffer drives VOH (pulldown or pullup resistor not activated)

1(PU): The buffer drives VOH with an active pullup resistor

–

Z: High-impedance

–

L: High-impedance with an active pulldown resistor

–

H : High-impedance with an active pullup resistor

(7) BALL RESET REL. STATE: State of the terminal after the active low PWRONRSTn terminal transitions from low to high.

–

0: The buffer drives VOL (pulldown or pullup resistor not activated)

0(PD): The buffer drives VOL with an active pulldown resistor

–

1: The buffer drives VOH (pulldown or pullup resistor not activated)

1(PU): The buffer drives VOH with an active pullup resistor

–

Z: High-impedance.

–

L: High-impedance with an active pulldown resistor

–

H : High-impedance with an active pullup resistor

(8) RESET REL. MODE: The mode is automatically configured after the active low PWRONRSTn terminal transitions from low to high.

(9) POWER: The voltage supply that powers the I/O buffers of the terminal.

(10) HYS: Indicates if the input buffer is with hysteresis.

(11) BUFFER STRENGTH: Drive strength of the associated output buffer.

(12) PULLUP OR PULLDOWN TYPE: Denotes the presence of an internal pullup or pulldown resistor. Pullup and pulldown resistors can

be enabled or disabled via software.

(13) I/O CELL: I/O cell information.

Note: Configuring two terminals to the same input signal is not supported as it can yield unexpected results. This can be easily prevented

with the proper software configuration.

AM3351 Datasheet(PDF) 18 Page - Texas Instruments

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