CSM9S12XDT512SLK Freescale Semiconductor, CSM9S12XDT512SLK Datasheet - Page 606

• Manufacturer Part Number: CSM9S12XDT512SLK
• Description: KIT STUDENT LEARNING 16BIT
• Manufacturer: Freescale Semiconductor

Specifications of CSM9S12XDT512SLK

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Chapter 16 Interrupt (S12XINTV1)
606
PRIOLVL[2:0]
RQST
Field
2–0
7
Priority
XGATE Request Enable — This bit determines if the associated interrupt request is handled by the CPU or by
the XGATE module.
0 Interrupt request is handled by the CPU
1 Interrupt request is handled by the XGATE module
Note: The IRQ interrupt cannot be handled by the XGATE module. For this reason, the configuration register
Interrupt Request Priority Level Bits — The PRIOLVL[2:0] bits configure the interrupt request priority level of
the associated interrupt request. Out of reset all interrupt requests are enabled at the lowest active level (“1”)
to provide backwards compatibility with previous HCS12 interrupt controllers. Please also refer to
available interrupt request priority levels.
Note: Write accesses to configuration data registers of unused interrupt channels will be ignored and read
Note: When vectors (vector base + 0x00F0–0x00FE) are selected by writing 0xF0 to INT_CFADDR, writes to
Note: Write accesses to the configuration register for the spurious interrupt vector request
high
low
for vector (vector base + 0x00F2) = IRQ vector address) does not contain a RQST bit. Writing a 1 to the
location of the RQST bit in this register will be ignored and a read access will return 0.
accesses will return all 0. For information about what interrupt channels are used in a specific MCU,
please refer to the Device User Guide of that MCU.
INT_CFDATA2–7 (0x00F4–0x00FE) will be ignored and read accesses will return all 0s. The
corresponding vectors do not have configuration data registers associated with them.
(vector base + 0x0010) will be ignored and read accesses will return 0x07 (request is handled by the
CPU, PRIOLVL = 7).
PRIOLVL2
0
0
0
0
1
1
1
1
Table 16-6. INT_CFDATA0–7 Field Descriptions
Table 16-7. Interrupt Priority Levels
MC9S12XDP512 Data Sheet, Rev. 2.21
PRIOLVL1
0
0
1
1
0
0
1
1
PRIOLVL0
Description
0
1
0
1
0
1
0
1
Interrupt request is disabled
Priority level 1
Priority level 2
Priority level 3
Priority level 4
Priority level 5
Priority level 6
Priority level 7
Meaning
Freescale Semiconductor
Table 16-7
for