mc9s12xs128 Freescale Semiconductor, Inc, mc9s12xs128 Datasheet - Page 158

• Manufacturer Part Number: mc9s12xs128
• Description: Hcs12 Microcontrollers 16-bit Automotive Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Interrupt (S12XINTV2)
4.3.2.3
Read: Anytime
Write: Anytime
4.3.2.4
The eight register window visible at addresses INT_CFDATA0–7 contains the configuration data for the
block of eight interrupt requests (out of 128) selected by the interrupt configuration address register
(INT_CFADDR) in ascending order. INT_CFDATA0 represents the interrupt configuration data register
of the vector with the lowest address in this block, while INT_CFDATA7 represents the interrupt
configuration data register of the vector with the highest address, respectively.
158
Address: 0x0127
INT_CFADDR[7:4]
Reset
W
Field
R
7–4
Interrupt Request Configuration Address Register (INT_CFADDR)
Interrupt Request Configuration Data Registers (INT_CFDATA0–7)
0
7
Priority
Interrupt Request Configuration Data Register Select Bits — These bits determine which of the 128
configuration data registers are accessible in the 8 register window at INT_CFDATA0–7. The hexadecimal
value written to this register corresponds to the upper nibble of the lower byte of the address of the interrupt
vector, i.e., writing 0xE0 to this register selects the configuration data register block for the 8 interrupt vector
requests starting with vector at address (vector base + 0x00E0) to be accessible as INT_CFDATA0–7.
Note: Writing all 0s selects non-existing configuration registers. In this case write accesses to
high
low
Figure 4-5. Interrupt Configuration Address Register (INT_CFADDR)
= Unimplemented or Reserved
INT_CFDATA0–7 will be ignored and read accesses will return all 0.
INT_CFADDR[7:4]
0
6
XILVL2
0
0
0
0
1
1
1
1
Table 4-7. INT_CFADDR Field Descriptions
Table 4-6. XGATE Interrupt Priority Levels
S12XS Family Reference Manual, Rev. 1.10
0
XILVL1
5
0
0
1
1
0
0
1
1
XILVL0
1
4
0
1
0
1
0
1
0
1
Description
Interrupt request is disabled
0
0
3
Priority level 1
Priority level 2
Priority level 3
Priority level 4
Priority level 5
Priority level 6
Priority level 7
Meaning
0
0
2
Freescale Semiconductor
0
0
1
0
0
0