AT91SAM9261 datasheet(29/43 Pages) ATMEL

29 / 43 page

6062GS–ATARM–05-Dec-06

AT91SAM9261 Preliminary

Note:

Setting AIC, SYSIRQ, UHP, LCDC and IRQ0 to IRQ2 bits in the clock set/clear registers of the

PMC has no effect.

10.3

Peripheral Multiplexing on PIO Lines

The AT91SAM9261 features three PIO controllers, PIOA, PIOB and PIOC, that multiplex the I/O

lines of the peripheral set.

Each PIO Controller controls up to thirty-two lines. Each line can be assigned to one of two

peripheral functions, A or B. Table 10-2 on page 32, Table 10-3 on page 33 and Table 10-4 on

page 34 define how the I/O lines of the peripherals A and B are multiplexed on the PIO Control-

lers. The two columns “Function” and “Comments” have been inserted for the user’s own

comments; they may be used to track how pins are defined in an application.

Note that some output only peripheral functions might be duplicated within the tables.

Table 10-1.

Peripheral Identifiers

Peripheral ID

Peripheral Mnemonic

Peripheral Name

External Interrupt

AIC

Advanced Interrupt Controller

FIQ

SYSIRQ

System Interrupt

PIOA

Parallel I/O Controller A

PIOB

Parallel I/O Controller B

PIOC

Parallel I/O Controller C

Reserved

6US0

USART 0

7US1

USART 1

8US2

USART 2

MCI

Multimedia Card Interface

UDP

USB Device Port

TWI

Two-Wire Interface

SPI0

Serial Peripheral Interface 0

SPI1

Serial Peripheral Interface 1

SSC0

Synchronous Serial Controller 0

SSC1

Synchronous Serial Controller 1

SSC2

Synchronous Serial Controller 2

TC0

Timer/Counter 0

TC1

Timer/Counter 1

TC2

Timer/Counter 2

UHP

USB Host Port

LCDC

LCD Controller

22 - 28

Reserved

AIC

Advanced Interrupt Controller

IRQ0

AIC

Advanced Interrupt Controller

IRQ1

AIC

Advanced Interrupt Controller

IRQ2

AT91SAM9261 Datasheet(PDF) 29 Page - ATMEL Corporation

AT91SAM9261 Datasheet(HTML) 29 Page - ATMEL Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43

Datasheet Download

Link URL