NXP Semiconductors LPC1769 - Interrupt Active Bit Register 0 (IABR0 - 0 Xe000 E300)

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User manual Rev. 3 — 19 December 2013 86 of 841
NXP Semiconductors
UM10360
Chapter 6: LPC176x/5x Nested Vectored Interrupt Controller (NVIC)
6.5.9 Interrupt Active Bit Register 0 (IABR0 - 0xE000 E300)
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 they are enabled. The remaining
interrupts can have their active state read via the IABR1 register (Section 6.5.10
).
Table 60. Interrupt Active Bit Register 0 (IABR0 - 0xE000 E300)
Bit Name Function
0 IAB_WDT Watchdog Timer Interrupt Active.
Read: 0 indicates that the interrupt is not active, 1 indicates that the interrupt is active.
1 IAB_TIMER0 Timer 0 Interrupt Active. See functional description for bit 0.
2 IAB_TIMER1 Timer 1. Interrupt Active. See functional description for bit 0.
3 IAB_TIMER2 Timer 2 Interrupt Active. See functional description for bit 0.
4 IAB_TIMER3 Timer 3 Interrupt Active. See functional description for bit 0.
5 IAB_UART0 UART0 Interrupt Active. See functional description for bit 0.
6 IAB_UART1 UART1 Interrupt Active. See functional description for bit 0.
7 IAB_UART2 UART2 Interrupt Active. See functional description for bit 0.
8 IAB_UART3 UART3 Interrupt Active. See functional description for bit 0.
9 IAB_PWM PWM1 Interrupt Active. See functional description for bit 0.
10 IAB_I2C0 I
2
C0 Interrupt Active. See functional description for bit 0.
11 IAB_I2C1 I
2
C1 Interrupt Active. See functional description for bit 0.
12 IAB_I2C2 I
2
C2 Interrupt Active. See functional description for bit 0.
13 IAB_SPI SPI Interrupt Active. See functional description for bit 0.
14 IAB_SSP0 SSP0 Interrupt Active. See functional description for bit 0.
15 IAB_SSP1 SSP1 Interrupt Active. See functional description for bit 0.
16 IAB_PLL0 PLL0 (Main PLL) Interrupt Active. See functional description for bit 0.
17 IAB_RTC Real Time Clock (RTC) Interrupt Active. See functional description for bit 0.
18 IAB_EINT0 External Interrupt 0 Interrupt Active. See functional description for bit 0.
19 IAB_EINT1 External Interrupt 1 Interrupt Active. See functional description for bit 0.
20 IAB_EINT2 External Interrupt 2 Interrupt Active. See functional description for bit 0.
21 IAB_EINT3 External Interrupt 3 Interrupt Active. See functional description for bit 0.
22 IAB_ADC ADC Interrupt Active. See functional description for bit 0.
23 IAB_BOD BOD Interrupt Active. See functional description for bit 0.
24 IAB_USB USB Interrupt Active. See functional description for bit 0.
25 IAB_CAN CAN Interrupt Active. See functional description for bit 0.
26 IAB_DMA GPDMA Interrupt Active. See functional description for bit 0.
27 IAB_I2S I
2
S Interrupt Active. See functional description for bit 0.
28 IAB_ENET Ethernet Interrupt Active. See functional description for bit 0.
29 IAB_RIT Repetitive Interrupt Timer Interrupt Active. See functional description for bit 0.
30 IAB_MCPWM Motor Control PWM Interrupt Active. See functional description for bit 0.
31 IAB_QEI Quadrature Encoder Interface Interrupt Active. See functional description for bit 0.