PCA5007 datasheet(54/112 Pages) PHILIPS

54 / 112 page

1998 Oct 07

Philips Semiconductors

Product speciﬁcation

Pager baseband controller

PCA5007

6.19.8

INTERRUPT HANDLING

Figure 27 shows the conventions for interrupt assignments and priorities.

Arbitration of several simultaneous interrupts can be seen from Fig.27. The sampled interrupt with the highest priority will

be handled first (assuming that the interrupt priority is default).

Setting of interrupt request flags for X2 to X9 is masked by the corresponding interrupt enable bit (IEN1).

Fig.27 Interrupt assignment and priorities.

The signal level applied to the EAN pin defines whether the interrupt vector code is fetched from external or internal ROM.

handbook, full pagewidth

MGR130

high

IP0/1

IEN0/1

low

0.0

TCON.1

IE0

0.5

S1CON.3

1.3

IRQ1.3

SYM

0.1

TCON.5

TF0

0.6

WUCON.6

WUP

1.4

IRQ1.4

IQ6

0.2

TCON.3

IE1

1.0

IRQ.0

IQ2

1.5

IRQ1.5

0.3

TCON.7

TF1

1.1

IRQ1.1

IQ3

1.6

IRQ1.6

WDI

0.4

S0CON.0/1

TI/RI

1.2

IRQ1.2

IQ4

1.7

RTCON.7

MIN

0.7

P3.2

P1.4

P3.3

P1.0

P1.1

P1.2

INT0

I2C-bus

SymClk

Timer 0

Wake-up

INT6

INT1

INT2

DC/DC

Timer 1

INT3

WDINT

UART

INT4

MINUTE

Name

Flag

Port

function

cleared

vector

global

enable

decreasing

priority

within

same

level

PRIORITY

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