UM10503
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© NXP B.V. 2015. All rights reserved.
User manual
Rev. 2.1 — 10 December 2015
125 of 1441
NXP Semiconductors
UM10503
Chapter 10: LPC43xx/LPC43Sxx Event router
10.5 Pin description
10.6 Register description
10.6.1 Level configuration register
This register works in combination with the edge configuration register EDGE (see
) to configure the level and edge detection for each input to the event router.
Table 84.
Event router pin description
Pin
Direction
Description
WAKEUP0/1
I/O
External wake-up input; can raise an event router interrupt
and can cause wake-up from any of the power-down
modes. These pins can be configured to monitor the event
router output through the CREG0 register (
WAKEUP2/3
I
External wake-up input; can raise an event router interrupt
and can cause wake-up from any of the power-down
modes.
Table 85.
Register overview: Event router (base address 0x4004 4000)
Name
Access
Address
offset
Description
Reset Value
Reference
HILO
R/W
0x000
Level configuration register 0x000
EDGE
R/W
0x004
Edge configuration
0x000
-
-
0x008 -
0xFD4
Reserved
-
-
CLR_EN
W
0xFD8
Clear event enable register 0x0
SET_EN
W
0xFDC
Set event enable register
0x0
STATUS
R
0xFE0
Event Status register
0x03FD FFFF
ENABLE
R
0xFE4
Event Enable register
0x0
CLR_STAT
W
0xFE8
Clear event status register
0x0
SET_STAT
W
0xFEC
Set event status register
0x0
Table 86.
Level configuration register (HILO, address 0x4004 4000) bit description
Bit
Symbol
Value Description
Reset
value
0
WAKEUP0_L
Level detect mode for WAKEUP0 event.
0
0
Detect LOW level on the WAKEUP0 pin if bit 0 in the
EDGE register is 0. Detect falling edge if bit 0 in the EDGE
register is 1.
1
Detect HIGH level on the WAKEUP0 pin if bit 0 in the
EDGE register is 0. Detect rising edge if bit 0 in the EDGE
register is 1.