UM10503
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© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1.3 — 6 July 2012
303 of 1269
NXP Semiconductors
UM10503
Chapter 15: LPC43xx System Control Unit (SCU)/ IO configuration
To enable each pin interrupt and configure its edge or level sensitivity, use the GPIO pin
interrupt registers (see
Table 146. Pin interrupt select register 1 (PINTSEL1, address 0x4008 6E04) bit description
Bit
Symbol
Value
Description
Reset
value
4:0
INTPIN4
Pint interrupt 4: Select the pin number within the GPIO port
selected by the PORTSEL4 bit in this register.
0
7:5
PORTSEL4
Pin interrupt 4: Select the port for the pin number to be
selected in the INTPIN4 bits of this register.
0
0x0
GPIO Port 0
0x1
GPIO Port 1
0x2
GPIO Port 2
0x3
GPIO Port 3
0x4
GPIO Port 4
0x5
GPIO Port 5
0x6
GPIO Port 6
0x7
GPIO Port 7
12:8
INTPIN5
Pint interrupt 5: Select the pin number within the GPIO port
selected by the PORTSEL5 bit in this register.
0
15:13
PORTSEL5
Pin interrupt 5: Select the port for the pin number to be
selected in the INTPIN5 bits of this register.
0
0x0
GPIO Port 0
0x1
GPIO Port 1
0x2
GPIO Port 2
0x3
GPIO Port 3
0x4
GPIO Port 4
0x5
GPIO Port 5
0x6
GPIO Port 6
0x7
GPIO Port 7
20:16
INTPIN6
Pint interrupt 6: Select the pin number within the GPIO port
selected by the PORTSEL6 bit in this register.
0
23:21
PORTSEL6
Pin interrupt 6: Select the port for the pin number to be
selected in the INTPIN6 bits of this register.
0
0x0
GPIO Port 0
0x1
GPIO Port 1
0x2
GPIO Port 2
0x3
GPIO Port 3
0x4
GPIO Port 4
0x5
GPIO Port 5
0x6
GPIO Port 6
0x7
GPIO Port 7
28:24
INTPIN7
Pint interrupt 7: Select the pin number within the GPIO port
selected by the PORTSEL7 bit in this register.
0