P83CL882 datasheet(21/88 Pages) PHILIPS

Part #	P83CL882

Description	80C51 Ultra Low Power ULP telephony controller

PDF	88 Pages

Scroll/Zoom	100%

Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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21 / 88 page

2001 Jun 19

Philips Semiconductors

Product speciﬁcation

80C51 Ultra Low Power (ULP) telephony controller

P83CL882

Table 15 Interrupt related SFRs

SFR

DESCRIPTION

SFR ADDRESS

RESET VALUE

IEN0

interrupt enable register 0

A8H

0000 0000

IEN1

interrupt enable register 1 (INT2 to INT9)

E8H

0000 0000

IEN2

interrupt enable register 2

F1H

0000 0000

IP0

interrupt priority register 0

B8H

0000 0000

IP1

interrupt priority register 1 (INT2 to INT9)

F8H

0000 0000

IP2

interrupt priority register 2

F9H

0000 0000

IX1

external interrupt polarity register 1

E9H

0000 0000

ISE1

external interrupt sensitivity register 1

E1H

0000 0000

IRQ1

external interrupt request ﬂag register 1

C0H

0000 0000

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MGR125

Interrupt level 2x

Interrupt level 1

Program level 0

RETI

Level 21

RETI

Level 20

RETI

one

instruction

IP = 1

IP = 0

Fig.11 Interrupt hierarchy.

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