PXS20RM Datasheet, PDF (917/1368 Pages) Freescale Semiconductor, Inc – PXS20 Microcontroller

Interrupt Controller (INTC)
28.4.8 INTC Priority Select Registers (INTC_PSR0_3 - INTC_PSR252_255)
INTC_BASE+0x40
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R
0000
PRI0
0000
PRI1
W
RESET: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R
0000
PRI2
0000
PRI3
W
RESET: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
= Unimplemented or Reserved
Figure 28-8. INTC Priority Select Register 0 - 3 (INTC_PSR0_3)
INTC_BASE+0x13C
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R
0000
PRI252
0000
PRI253
W
RESET: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R
0000
PRI254
0000
PRI255
W
RESET: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
= Unimplemented or Reserved
Figure 28-9. INTC Priority Select Register 252 - 255 (INTC_PSR252_255)
The Priority Select Registers support the selection of an individual priority for each source of interrupt
request. The unique vector of each peripheral or software settable interrupt request determines which
INTC_PSRx_x is assigned to that interrupt request. The software settable interrupts 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 8–255, and their priorities are
configured in INTC_PSR8_11 through INTC_PSR252_255, respectively.
NOTE
The PRIx field of an INTC_PSRx_x must not be modified while its
corresponding peripheral or software settable interrupt request is asserted.
PRI0[0:3] - PRI255[0:3] — Priority Select.
PRIx selects the priority for the interrupt requests. Refer to the field values in Table 28-2.
Freescale Semiconductor
PXS20 Microcontroller Reference Manual, Rev. 1
28-11