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ATSAM4S-XPLD
42
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
11.2
Peripheral Signal Multiplexing on I/O Lines
The SAM4S features 2 PIO controllers on 64-pin versions (PIOA and PIOB) or 3 PIO controllers on the 100-pin version
(PIOA, PIOB and PIOC), that multiplex the I/O lines of the peripheral set.
(PIOA, PIOB and PIOC), that multiplex the I/O lines of the peripheral set.
The SAM4S 64-pin and 100-pin PIO Controllers control up to 32 lines. Each line can be assigned to one of three
peripheral functions: A, B or C. The multiplexing tables in the following paragraphs define how the I/O lines of the
peripherals A, B and C are multiplexed on the PIO Controllers. The column “Comments” has been inserted in this table
for the user’s own comments; it may be used to track how pins are defined in an application.
peripheral functions: A, B or C. The multiplexing tables in the following paragraphs define how the I/O lines of the
peripherals A, B and C are multiplexed on the PIO Controllers. The column “Comments” has been inserted in this table
for the user’s own comments; it may be used to track how pins are defined in an application.
Note that some peripheral functions which are output only, might be duplicated within the tables.
31
PWM
X
X
Pulse Width Modulation
32
CRCCU
X
X
CRC Calculation Unit
33
ACC
X
X
Analog Comparator
34
UDP
X
X
USB Device Port
Table 11-1. Peripheral Identifiers (Continued)
Instance ID
Instance Name
NVIC Interrupt
PMC
Clock Control
Instance Description