Nxp Semiconductors LPC2917 User Manual

LPC2917_19_1

© NXP B.V. 2007. All rights reserved.

Event detection is fully asynchronous, so no clock is required

The event router allows the event source to be defined, its polarity and activation type to 
be selected and the interrupt to be masked or enabled. The event router can be used to 
start a clock on an external event.

The vectored interrupt-controller inputs are active HIGH.

The event router module in the LPC2917/19 is connected to the pins listed below. The 
pins are combined with other functions on the port pins of the LPC2917/19. 

 

shows the pins connected to the event router, and also the corresponding bit position in 
the event-router registers and the default polarity.

 

The peripheral subsystem is clocked by a number of different clocks: 

CLK_SYS_PESS

CLK_UART0/1

CLK_SPI0/1/2

CLK_TMR0/1/2/3

EXTINT0

in

0

external interrupt input 0

1

EXTINT1

in

1

external interrupt input 1

1

EXTINT2

in

2

external interrupt input 2

1

EXTINT3

in

3

external interrupt input 3

1

EXTINT4

in

4

external interrupt input 4

1

EXTINT5

in

5

external interrupt input 5

1

EXTINT6

in

6

external interrupt input 6

1

EXTINT7

in

7

external interrupt input 7

1

CAN0 RXD

in

8

CAN0 receive data input wake-up

0

CAN1 RXD

in

9

CAN1 receive data input wake-up

0

-

-

13 - 10

reserved

-

LIN0 RXD

in

14

LIN0 receive data input wake-up

0

LIN1 RXD

in

15

LIN1 receive data input wake-up

0

-

-

21 - 16

reserved

-

-

na

22

CAN interrupt (internal)

1

-

na

23

VIC FIQ (internal)

1

-

na

24

VIC IRQ (internal)

1

-

-

26 - 25

reserved

-