SAMA5D41_14 Datasheet, PDF (336/1776 Pages) ATMEL Corporation – Atmel | SMART ARM-based Embedded MPU

28.3 Block Diagram
Figure 28-1. Block Diagram
Secure
Interrupt Controller
Secure
PIO Interrupt
Non-Secure
Interrupt Controller
Non-Secure
PIO Interrupt
PIO Controller
PMC
Peripheral Clock
Data, Enable
Embedded
Peripheral
Data, Enable
Up to 32
Peripheral IOs
Embedded
Peripheral
Up to 32
Peripheral IOs
APB
PIN 0
PIN 1
Up to 32 pins
PIN 31
28.4 Product Dependencies
28.4.1 Pin Multiplexing
Each pin is configurable, depending on the product, as either a general-purpose I/O line only, or as an I/O line
multiplexed with one or two peripheral I/Os. As the multiplexing is hardware defined and thus product-dependent,
the hardware designer and programmer must carefully determine the configuration of the PIO Controllers required
by their application. When an I/O line is general-purpose only, i.e., not multiplexed with any peripheral I/O,
programming of the PIO Controller regarding the assignment to a peripheral has no effect and only the PIO
Controller can control how the pin is driven by the product.
336
SAMA5D4 Series [DATASHEET]
Atmel-11238A-ATARM-SAMA5D4-Datasheet_30-Sep-14