NXP Semiconductors PXN2020, Reference Manual, Page: 286 / 1376

Interrupts and Interrupt Controller (INTC)
PXN20 Microcontroller Reference Manual, Rev. 1
10-18 Freescale Semiconductor
The priority select registers support the selection of an individual priority for each source of interrupt
request, and whether the interrupt request is to be sent to processor 0 (Z6), processor 1, (Z0) or both. The
unique vector of each peripheral or software settable interrupt request determines which INTC_PSR
n _ n is
assigned to that interrupt request. The software settable interrupt requests 0–7 are assigned vectors 0–7,
and their priorities are configured in INTC_PSR0_3 and INTC_PSR4_7, respectively. The peripheral
interrupt requests are assigned vectors 8–315, and their priorities are configured in INTC_PSR8_11
through INTC_PSR312_315, respectively (see
Section 10.4.1, External Interrupt Request Sources, ).
NOTE
The PRC_SEL n or PRI n field of an INTC_PSR n _ n must not be modified
while the corresponding peripheral or software settable interrupt request is
asserted.
INTC_PSR108_111 0x00AC INTC_PSR268_271 0x014C
INTC_PSR112_115 0x00B0 INTC_PSR272_275 0x0150
INTC_PSR116_119 0x00B4 INTC_PSR276_279 0x0154
INTC_PSR120_123 0x00B8 INTC_PSR280_283 0x0158
INTC_PSR124_127 0x00BC INTC_PSR284_287 0x015C
INTC_PSR128_131 0x00C0 INTC_PSR288_291 0x0160
INTC_PSR132_135 0x00C4 INTC_PSR292_295 0x0164
INTC_PSR136_139 0x00C8 INTC_PSR296_299 0x0168
INTC_PSR140_143 0x00CC INTC_PSR300_303 0x016C
INTC_PSR144_147 0x00D0 INTC_PSR304_307 0x0170
INTC_PSR148_151 0x00D4 INTC_PSR308_311 0x0174
INTC_PSR152_155 0x00D8 INTC_PSR312_315 0x0178
INTC_PSR156_159 0x00DC
Table 10-11. Selected Processor for Interrupt Request
PRC_SELn Meaning
00 Interrupt request sent to processor 0 (Z6)
01 Interrupt request sent to both processors
10 Reserved
11 Interrupt request sent to processor 1 (Z0)
Table 10-10. INTC Priority Select Register Address Offsets
INTC_PSRn_n Offset Address INTC_PSRn_n Offset Address