AT89C5132-ROTUL datasheet(38/181 Pages) ATMEL

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4173D–USB–02/06

AT89C5132

10.3

Registers

Table 35. IEN0 Register

IEN0 (S:A8h) – Interrupt Enable Register 0

Reset Value = 0000 0000b

Table 36. IEN1 Register

IEN1 (S:B1h) – Interrupt Enable Register 1

765

4321

EAUD

–

ET1

EX1

ET0

EX0

Bit Number

Bit

Mnemonic

Description

7EA

Enable All Interrupt Bit

Set to enable all interrupts.

Clear to disable all interrupts.

If EA = 1, each interrupt source is individually enabled or disabled by setting or clearing

its interrupt enable bit.

EAUD

Audio Interface Interrupt Enable Bit

Set to enable audio interface interrupt.

Clear to disable audio interface interrupt.

5–

Reserved

The values read from this bit is always 0. Do not set this bit.

4ES

Serial Port Interrupt Enable Bit

Set to enable serial port interrupt.

Clear to disable serial port interrupt.

3ET1

Timer 1 Overflow Interrupt Enable Bit

Set to enable Timer 1 overflow interrupt.

Clear to disable Timer 1 overflow interrupt.

EX1

External Interrupt 1 Enable bit

Set to enable external interrupt 1.

Clear to disable external interrupt 1.

1ET0

Timer 0 Overflow Interrupt Enable Bit

Set to enable timer 0 overflow interrupt.

Clear to disable timer 0 overflow interrupt.

EX0

External Interrupt 0 Enable Bit

Set to enable external interrupt 0.

Clear to disable external interrupt 0.

765

4321

EUSB

–

EKB

EADC

ESPI

EI2C

EMMC

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