SPEAR320S datasheet(29/113 Pages) STMICROELECTRONICS

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SPEAr320S

Pin description

Doc ID 022508 Rev 2

29/113

Pin description

This chapter provides a full description of the ball characteristics and the signal multiplexing

of SPEAr320S device.

Section 3.1 shows the pin/ball map of SPEAr320S.

Section 3.2 lists the required external components to connect.

Section 3.3 describes some dedicated pins, such as:

●

Clock, reset and 3V3 comparator pins

●

Power supply pins

●

Debug pins

●

Non-multiplexed pins

Section 3.4 provides a complete description of the shared IO pins (PL_GPIOs) and their

configuration modes, as well as detailed information on all multiplexed signals, grouped by

IP.

Section 3.5 explains the available debug modes.

The following table defines the table headers and abbreviations used in this chapter.

Table 5.

Headers/abbreviations

Header

Description

Abbreviations

Group

Grouping of signals of the same type/functional block. –

Signal name

Name of signal multiplexed on each ball.

–

Direction (Dir.)

Indicates the direction of the signal.

I= Input

O= Output

IO= Input/output

PL_GPIO_# /Ball

PL_GPIO and ball number associated with each

signal on the package.

–

Configuration mode

Indicates the available configuration mode among the

following ones:

– Mode 1

– Mode 2

– Mode 3

– Mode 4

– Alternate function

– Extended mode

See Section 3.4.2 for the description of each mode.

–

Pin type

Pad type information

PU= Pull Up

PD= Pull Down

GND= Ground

Value

Indicates the electrical value on the ball.

–

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