UM10375 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
User manual Rev. 3 — 14 June 2011 81 of 368
NXP Semiconductors
UM10375
Chapter 6: LPC13xx Interrupt controller
6.6.19 Interrupt Priority Register 8
The IPR8 register controls the priority of four peripheral interrupts. Each interrupt can
have one of 32 priorities, where 0 is the highest priority.
6.6.20 Interrupt Priority Register 9
The IPR9 register controls the priority of four peripheral interrupts. Each interrupt can
have one of 32 priorities, where 0 is the highest priority.
Table 86. Interrupt Priority Register 8 (IPR8 - address 0xE000 E420) bit description
Bit Symbol Description
4:0 Unimplemented These bits ignore writes, and read as 0.
7:5 IP_PIO2_8 PIO0_8 Interrupt Priority. 0 = highest priority. 31 (0x1F) = lowest priority.
12:8 Unimplemented These bits ignore writes, and read as 0.
15:13 IP_PIO2_9 PIO0_9 Interrupt Priority. 0 = highest priority. 31 (0x1F) = lowest priority.
20:16 Unimplemented These bits ignore writes, and read as 0.
23:21 IP_PIO2_10 PIO0_10 Interrupt Priority. 0 = highest priority. 31 (0x1F) = lowest
priority.
28:24 Unimplemented These bits ignore writes, and read as 0.
31:29 IP_PIO2_11 PIO0_11 Interrupt Priority. 0 = highest priority. 31 (0x1F) = lowest
priority.
Table 87. Interrupt Priority Register 9 (IPR9 - address 0xE000 E424) bit description
Bit Symbol Description
4:0 Unimplemented These bits ignore writes, and read as 0.
7:5 IP_PIO3_0 PIO3_0 Interrupt Priority. 0 = highest priority. 31 (0x1F) = lowest priority.
12:8 Unimplemented These bits ignore writes, and read as 0.
15:13 IP_PIO3_1 PIO3_1 Interrupt Priority. 0 = highest priority. 31 (0x1F) = lowest priority.
20:16 Unimplemented These bits ignore writes, and read as 0.
23:21 IP_PIO3_2 PIO3_2 Interrupt Priority. 0 = highest priority. 31 (0x1F) = lowest priority.
28:24 Unimplemented These bits ignore writes, and read as 0.
31:29 IP_PIO3_3 PIO3_3 Interrupt Priority. 0 = highest priority. 31 (0x1F) = lowest priority.
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