S912XHZ512F1VAG Datasheet, PDF (839/978 Pages) Freescale Semiconductor, Inc – Covers MC9S12XHZ384, MC9S12XHZ256

Chapter 24 Interrupt (S12XINTV1)
24.3.1.3 Interrupt Request Configuration Address Register (INT_CFADDR)
Address: 0x0127
7
6
5
4
3
2
1
0
R
INT_CFADDR[7:4]
W
0
0
0
0
Reset
0
0
0
1
0
0
0
0
= Unimplemented or Reserved
Figure 24-5. Interrupt Configuration Address Register (INT_CFADDR)
Read: Anytime
Write: Anytime
Table 24-5. INT_CFADDR Field Descriptions
Field
Description
7–4
Interrupt Request Configuration Data Register Select Bits — These bits determine which of the 128
INT_CFADDR[7:4] 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 interrupt vector, i.e.,
writing 0xE0 to this register selects the configuration data register block for the 8 interrupt vector requests
starting with vector (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
INT_CFDATA0–7 will be ignored and read accesses will return all 0.
MC9S12XHZ512 Data Sheet, Rev. 1.06
Freescale Semiconductor
839