Chapter 20 Debug (S12XDBGV2)
MC9S12XDP512 Data Sheet, Rev. 2.11
810 Freescale Semiconductor
20.3.1.11.4 Debug Comparator Address Low Register (DBGXAL)
Read: Anytime
Write: Anytime when DBG not armed.
20.3.1.11.5 Debug Comparator Data High Register (DBGXDH)
Read: Anytime
Write: Anytime when DBG not armed.
0x002B
76543210
RBit 7 6 5 4 3 2 1 Bit 0
W
Reset 00000000

Figure 20-17. Debug Comparator Address Low Register (DBGXAL)

Table 20-31. DBGXAL Field Descriptions

Field Description
7–0
Bits [7:0]
Comparator Address Low Compare Bits — The comparator address low compare bits control whether the
selected comparator will compare the address bus bits [7:0] to a logic 1 or logic 0.
0 Compare corresponding address bit to a logic 0
1 Compare corresponding address bit to a logic 1
0x002C
76543210
RBit 15 14 13 12 11 10 9 Bit 8
W
Reset 00000000

Figure 20-18. Debug Comparator Data High Register (DBGXDH)

Table 20-32. DBGXDH Field Descriptions

Field Description
7–0
Bits [15:8]
Comparator Data High Compare Bits — The comparator data high compare bits control whether the selected
comparator compares the data bus bits [15:8] to a logic 1 or logic 0. The comparator data compare bits are only
used in comparison if the corresponding data mask bit is logic 1. This register is available only for comparators
A and C.
0 Compare corresponding data bit to a logic 0
1 Compare corresponding data bit to a logic 1