mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 766

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 20 S12X Debug (S12XDBGV3) Module
20.3.2.8.4
Read: Anytime
Write: Anytime when S12XDBG not armed.
20.3.2.8.5
Read: Anytime
Write: Anytime when S12XDBG not armed.
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Address: 0x002B
Address: 0x002C
Bits[15:8]
Bits[7:0]
Reset
Reset
Field
Field
7–0
7–0
W
W
R
R
Bit 15
Bit 7
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 one or logic zero.
0 Compare corresponding address bit to a logic zero
1 Compare corresponding address bit to a logic one
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 one or logic zero. 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 zero
1 Compare corresponding data bit to a logic one
0
0
7
7
Debug Comparator Address Low Register (DBGXAL)
Debug Comparator Data High Register (DBGXDH)
Figure 20-17. Debug Comparator Address Low Register (DBGXAL)
Figure 20-18. Debug Comparator Data High Register (DBGXDH)
Bit 14
Bit 6
0
0
6
6
Table 20-32. DBGXAH Field Descriptions
Table 20-31. DBGXAL Field Descriptions
MC9S12XDP512 Data Sheet, Rev. 2.17
Bit 13
Bit 5
0
0
5
5
Bit 12
Bit 4
0
0
4
4
Description
Description
Bit 11
Bit 3
0
0
3
3
Bit 10
Bit 2
0
0
2
2
Freescale Semiconductor
Bit 1
Bit 9
0
0
1
1
Bit 0
Bit 8
0
0
0
0