AT32UC3L0128-ZAUR データシートの表示（PDF） - Atmel Corporation

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AT32UC3L0128-ZAUR

32-bit Atmel AVR Microcontroller

Atmel Corporation 

AT32UC3L0128/256

3.2.3

Peripheral Functions

Each GPIO line can be assigned to one of several peripheral functions. The following table

describes how the various peripheral functions are selected. The last listed function has priority

in case multiple functions are enabled on the same pin.

Table 3-2. Peripheral Functions

Function

GPIO Controller Function multiplexing

Nexus OCD AUX port connections

aWire DATAOUT

JTAG port connections

Oscillators

Description

GPIO and GPIO peripheral selection A to H

OCD trace system

aWire output in two-pin mode

JTAG debug port

OSC0, OSC32

3.2.4

JTAG Port Connections

If the JTAG is enabled, the JTAG will take control over a number of pins, irrespectively of the I/O

Controller configuration.

Table 3-3. JTAG Pinout

48-pin

11

14

13

4

Pin name

PA00

PA01

PA02

PA03

JTAG pin

TCK

TMS

TDO

TDI

3.2.5

Nexus OCD AUX Port Connections

If the OCD trace system is enabled, the trace system will take control over a number of pins, irre-

spectively of the I/O Controller configuration. Two different OCD trace pin mappings are

possible, depending on the configuration of the OCD AXS register. For details, see the AVR32

UC Technical Reference Manual.

Table 3-4.

Pin

EVTI_N

MDO[5]

MDO[4]

MDO[3]

MDO[2]

MDO[1]

MDO[0]

Nexus OCD AUX Port Connections

AXS=1

AXS=0

PA05

PB08

PA10

PB00

PA18

PB04

PA17

PB05

PA16

PB03

PA15

PB02

PA14

PB09

11

32145C–06/2013

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