AT89C5132-ROTUL datasheet(38/182 Pages) ATMEL

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4173E–USB–09/07

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

EAUD

–

ET1

EX1

ET0

EX0

Bit Number

Bit

Mnemonic

Description

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.

–

Reserved

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

Serial Port Interrupt Enable Bit

Set to enable serial port interrupt.

Clear to disable serial port interrupt.

ET1

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.

ET0

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.

EUSB

–

EKB

EADC

ESPI

EI2C

EMMC

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