P83C180AER/001 데이터 시트보기 (PDF) - Philips Electronics

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P83C180AER/001

Microcontrollers for monitors with DDC interface, auto-sync detection and sync proc.

Philips Electronics 

Philips Semiconductors

Microcontrollers for monitors with DDC

interface, auto-sync detection and sync proc.

Product specification

P83Cx80; P87C380

8.3 Interrupt Enable Register (IE)

Table 23 Interrupt Enable Register (SFR address A8H)

7

6

5

4

3

2

1

0

EA

−

ES1

−

ET1

EX1

ET0

EX0

Table 24 Description of IE bits

BIT

SYMBOL

FUNCTION

7

EA

Disable all interrupts. If EA = 0, then no interrupt will be acknowledged. If EA = 1, then

each interrupt source is individually enabled or disabled by setting or clearing its enable

bit.

6

−

Reserved.

5

ES1

Enable DDC interface interrupt. If ES1 = 1, then DDC interface interrupt is enabled.

If ES1 = 0, then DDC interface interrupt is disabled.

4

−

Reserved.

3

ET1

Enable Timer 1 overflow interrupt. If ET1 = 1, then the Timer 1 interrupt is enabled.

If ET1 = 0, then the Timer 1 interrupt is disabled.

2

EX1

Enable external interrupt 1. If EX1 = 1 then the External 1 interrupt is enabled.

If EX1 = 0 then the External 1 interrupt is disabled.

1

ET0

Enable Timer 0 overflow interrupt. If ET0 = 1 then the Timer 0 interrupt is enabled.

If ET0 = 0 then the Timer 0 interrupt is disabled.

0

EX0

Enable mode change. If EX0 = 1 then the mode change interrupt is enabled.

If EX0 = 0 then the mode change interrupt is disabled.

8.4 Interrupt Priority Register (IP)

Table 25 Interrupt Priority Register (address B8H)

7

6

5

4

−

−

PS1

−

3

2

1

0

PT1

PX1

PT0

PX0

Table 26 Description of IP bits

BIT

7 to 6

5

4

3

2

1

0

SYMBOL

−

PS1

−

PT1

PX1

PT0

PX0

DESCRIPTION

Reserved.

DDC interface Interrupt priority level. When PS1 = 1, DDC interface Interrupt is

assigned a high priority level.

Reserved.

Timer 1 overflow interrupt priority level. When PT1 = 1, Timer 1 Overflow Interrupt is

assigned a high priority level.

External interrupt 1 priority level. When PX1 = 1, External Interrupt 1 priority is

assigned a high priority level.

Timer 0 overflow interrupt priority level. When PT0 = 1, Timer 0 Overflow Interrupt is

assigned a high priority level.

Mode change interrupt priority level. When PX0 = 1, Mode change Interrupt is

assigned a high priority level.

1997 Dec 12

20

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