NXP Semiconductors LPC1311 User Manual

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User manual Rev. 3 — 14 June 2011 75 of 368
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Chapter 6: LPC13xx Interrupt controller
6.6.9 Interrupt Active Bit Register 0
The IABR0 register is a read-only register that allows reading the active state of the first
32 peripheral interrupts. This allows determining which peripherals are asserting an
interrupt to the NVIC, and may also be pending if there are enabled. The remaining
interrupts can have their active state read via the IABR1 register (Section 6.6.10
).
The bit description is as follows for all bits in this register:
Write — n/a.
Read — 0 indicates that the interrupt is not active, 1 indicates that the interrupt is active.
Table 76. Interrupt Active Bit Register 0 (IABR0 - address 0xE000 E300) bit description
Bit Symbol Function
0 IAB_PIO0_0 PIO0_0 start logic input interrupt active.
1 IAB_PIO0_1 PIO0_1 start logic input interrupt active.
2 IAB_PIO0_2 PIO0_2 start logic input interrupt active.
3 IAB_PIO0_3 PIO0_3 start logic input interrupt active.
4 IAB_PIO0_4 PIO0_4 start logic input interrupt active.
5 IAB_PIO0_5 PIO0_5 start logic input interrupt active.
6 IAB_PIO0_6 PIO0_6 start logic input interrupt active.
7 IAB_PIO0_7 PIO0_7 start logic input interrupt active.
8 IAB_PIO0_8 PIO0_8 start logic input interrupt active.
9 IAB_PIO0_9 PIO0_9 start logic input interrupt active.
10 IAB_PIO0_10 PIO0_10 start logic input interrupt active.
11 IAB_PIO0_11 PIO0_11 start logic input interrupt active.
12 IAB_PIO1_0 PIO1_0 start logic input interrupt active.
13 IAB_PIO1_1 PIO1_1 start logic input interrupt active.
14 IAB_PIO1_2 PIO1_2 start logic input interrupt active.
15 IAB_PIO1_3 PIO1_3 start logic input interrupt active.
16 IAB_PIO1_4 PIO1_4 start logic input interrupt active.
17 IAB_PIO1_5 PIO1_5 start logic input interrupt active.
18 IAB_PIO1_6 PIO1_6 start logic input interrupt active.
19 IAB_PIO1_7 PIO1_7 start logic input interrupt active.
20 IAB_PIO1_8 PIO1_8 start logic input interrupt active.
21 IAB_PIO1_9 PIO1_9 start logic input interrupt active.
22 IAB_PIO1_10 PIO1_10 start logic input interrupt active.
23 IAB_PIO1_11 PIO1_11 start logic input interrupt active.
24 IAB_PIO2_0 PIO2_0 start logic input interrupt active.
25 IAB_PIO2_1 PIO2_1 start logic input interrupt active.
26 IAB_PIO2_2 PIO2_2 start logic input interrupt active.
27 IAB_PIO2_3 PIO2_3 start logic input interrupt active.
28 IAB_PIO2_4 PIO2_4 start logic input interrupt active.
29 IAB_PIO2_5 PIO2_5 start logic input interrupt active.
30 IAB_PIO2_6 PIO2_6 start logic input interrupt active.
31 IAB_PIO2_7 PIO2_7 start logic input interrupt active.

NXP Semiconductors LPC1311 Specifications

General

Brand	NXP Semiconductors
Model	LPC1311
Category	Controller
Language	English