LPC2290 NXP Semiconductors, LPC2290 Datasheet - Page 16

• Manufacturer Part Number: LPC2290
• Description: The LPC2290 microcontroller is based on a 16/32-bit ARM7TDMI-S CPU with real-timeemulation and embedded trace support
• Manufacturer: NXP Semiconductors

NXP Semiconductors
LPC2290_3
Product data sheet
6.4.1 Interrupt sources
Vectored IRQs have the middle priority. Sixteen of the interrupt requests can be assigned
to this category. Any of the interrupt requests can be assigned to any of the 16 vectored
IRQ slots, among which slot 0 has the highest priority and slot 15 has the lowest.
Non-vectored IRQs have the lowest priority.
The VIC combines the requests from all the vectored and non-vectored IRQs to produce
the IRQ signal to the ARM processor. The IRQ service routine can start by reading a
register from the VIC and jumping there. If any of the vectored IRQs are requesting, the
VIC provides the address of the highest-priority requesting IRQs service routine,
otherwise it provides the address of a default routine that is shared by all the non-vectored
IRQs. The default routine can read another VIC register to see what IRQs are active.
Table 4
one interrupt line connected to the VIC, but may have several internal interrupt flags.
Individual interrupt flags may also represent more than one interrupt source.
Table 4.
Block
WDT
-
ARM Core
ARM Core
Timer 0
Timer 1
UART0
UART1
PWM0
I
SPI0
2
C-bus
lists the interrupt sources for each peripheral function. Each peripheral device has
Interrupt sources
Flag(s)
Watchdog Interrupt (WDINT)
Reserved for software interrupts only
EmbeddedICE, DbgCommRx
EmbeddedICE, DbgCommTx
Match 0 to 3 (MR0, MR1, MR2, MR3)
Capture 0 to 3 (CR0, CR1, CR2, CR3)
Match 0 to 3 (MR0, MR1, MR2, MR3)
Capture 0 to 3 (CR0, CR1, CR2, CR3)
RX Line Status (RLS)
Transmit Holding Register Empty (THRE)
RX Data Available (RDA)
Character Time-out Indicator (CTI)
Auto-Baud Time-Out (ABTO) (available in LPC2290/01 only)
End of Auto-Baud (ABEO)
RX Line Status (RLS)
Transmit Holding Register empty (THRE)
RX Data Available (RDA)
Character Time-out Indicator (CTI)
Modem Status Interrupt (MSI)
Auto-Baud Time-Out (ABTO) (available in LPC2290/01 only)
End of Auto-Baud (ABEO)
Match 0 to 6 (MR0, MR1, MR2, MR3, MR4, MR5, MR6)
SI (state change)
SPIF, MODF
Rev. 03 — 16 November 2006
16/32-bit ARM microcontroller with external memory interface
LPC2290
© NXP B.V. 2006. All rights reserved.
VIC channel #
0
1
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