AM3359_14 datasheet(18/236 Pages) TI1

18 / 236 page

AM3359, AM3358, AM3357

AM3356, AM3354, AM3352

SPRS717F – OCTOBER 2011 – REVISED APRIL 2013

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2.2

Ball Characteristics

The AM335x ARM Cortex-A8 Microprocessors (MPUs) Technical Reference Manual (literature number

SPRUH73) and this document may reference internal signal names when discussing peripheral input and

output signals since 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.

(a) 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.

(b) 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

–

IO = 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.

Terminal Description

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