SPEAR320S Datasheet, PDF (29/113 Pages) STMicroelectronics – Embedded MPU with ARM926 core for industrial and consumer applications

SPEAr320S
3
Pin description
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
Direction (Dir.)
Name of signal multiplexed on each ball.
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.
–
Indicates the available configuration mode among the
following ones:
– Mode 1
– Mode 2
Configuration mode – 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.
–
Doc ID 022508 Rev 2
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