Chapter 18 Debug Module (DBG) (128K)
MC9S08QE128 MCU Series Reference Manual, Rev. 2
Freescale Semiconductor
325
18.3.3
Register Descriptions
This section consists of the DBG register descriptions in address order.
Note: For all registers below, consider: U = Unchanged, bit maintain its value after reset.
18.3.3.1
Debug Comparator A High Register (DBGCAH)
18.3.3.2
Debug Comparator A Low Register (DBGCAL)
Module Base + 0x0000
7
6
5
4
3
2
1
0
R
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
W
POR
or non-
end-run
1
1
1
1
1
1
1
1
Reset
end-run
1
1
In the case of an end-trace to reset where DBGEN=1 and BEGIN=0, the bits in this register do not change after reset.
U
U
U
U
U
U
U
U
Figure 18-2. Debug Comparator A High Register (DBGCAH)
Table 18-3. DBGCAH Field Descriptions
Field
Description
Bits 15–8
Comparator A High Compare Bits — The Comparator A High compare bits control whether Comparator A will
compare the address bus bits [15:8] 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
Module Base + 0x0001
7
6
5
4
3
2
1
0
R
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
W
POR
or non-
end-run
1
1
1
1
1
1
1
0
Reset
end-run
1
1
In the case of an end-trace to reset where DBGEN=1 and BEGIN=0, the bits in this register do not change after reset.
U
U
U
U
U
U
U
U
Figure 18-3. Debug Comparator A Low Register (DBGCAL)
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