Data Sheet

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Atmel | SMART SAM D21 [DATASHEET]

Atmel-42181G–SAM-D21_Datasheet–09/2015

28.9.3 Interrupt Enable Clear

This register allows the user to disable an interrupt without doing a read-modify-write operation. Changes in this register

will also be reflected in the Interrupt Enable Set (INTENSET) register.

Name: INTENCLR

Offset: 0x0C

Reset: 0x0000

Property: Write-Protected

z Bits 15:14 – Reserved

These bits are unused and reserved for future use. For compatibility with future devices, always write these bits to

zero when this register is written. These bits will always return zero when read.

z Bits 13:12 – TXURx [x=1..0]: Transmit Underrun x Interrupt Enable

0: The Transmit Underrun x interrupt is disabled.

1: The Transmit Underrun x interrupt is enabled.

Writing a zero to this bit has no effect.

Writing a one to this bit will clear the Transmit Underrun x Interrupt Enable bit, which disables the Transmit Under-

run x interrupt.

z Bits 11:10 – Reserved

These bits are unused and reserved for future use. For compatibility with future devices, always write these bits to

zero when this register is written. These bits will always return zero when read.

z Bits 9:8 – TXRDYx [x=1..0]: Transmit Ready x Interrupt Enable

0: The Transmit Ready x interrupt is disabled.

1: The Transmit Ready x interrupt is enabled.

Writing a zero to this bit has no effect.

Writing a one to this bit will clear the Transmit Ready x Interrupt Enable bit, which disables the Transmit Ready x

interrupt.

z Bits 7:6 – Reserved

These bits are unused and reserved for future use. For compatibility with future devices, always write these bits to

zero when this register is written. These bits will always return zero when read.

z Bits 5:4 – RXORx [x=1..0]: Receive Overrun x Interrupt Enable

0: The Receive Overrun x interrupt is disabled.

1: The Receive Overrun x interrupt is enabled.

Writing a zero to this bit has no effect.

Bit 151413121110 9 8

TXUR1 TXUR0 TXRDY1 TXRDY0

Access R R R/W R/W R R R/W R/W

Reset00000000

Bit 76543210

RXOR1 RXOR0 RXRDY1 RXRDY0

Access R R R/W R/W R R R/W R/W

Reset00000000