S912XEG128J2MAA Datasheet, PDF (326/1324 Pages) Freescale Semiconductor, Inc – Microcontrollers

Chapter 8 S12X Debug (S12XDBGV3) Module
8.3.2.8.7 Debug Comparator Data High Mask Register (DBGXDHM)
Address: 0x002E
R
W
Reset
7
Bit 15
0
6
Bit 14
0
5
Bit 13
0
4
Bit 12
0
3
Bit 11
0
2
Bit 10
0
1
Bit 9
0
0
Bit 8
0
Figure 8-20. Debug Comparator Data High Mask Register (DBGXDHM)
Read: Anytime. See Table 8-29 for visible register encoding.
Write: If DBG not armed. See Table 8-29 for visible register encoding.
Table 8-37. DBGXDHM Field Descriptions
Field
Description
7–0
Bits[15:8]
Comparator Data High Mask Bits — The Comparator data high mask bits control whether the selected
comparator compares the data bus bits [15:8] to the corresponding comparator data compare bits. This register
is available only for comparators A and C.
0 Do not compare corresponding data bit
1 Compare corresponding data bit
8.3.2.8.8 Debug Comparator Data Low Mask Register (DBGXDLM)
Address: 0x002F
R
W
Reset
7
Bit 7
0
6
Bit 6
0
5
Bit 5
0
4
Bit 4
0
3
Bit 3
0
2
Bit 2
0
1
Bit 1
0
0
Bit 0
0
Figure 8-21. Debug Comparator Data Low Mask Register (DBGXDLM)
Read: Anytime. See Table 8-29 for visible register encoding.
Write: If DBG not armed. See Table 8-29 for visible register encoding.
Table 8-38. DBGXDLM Field Descriptions
Field
7–0
Bits[7:0]
Description
Comparator Data Low Mask Bits — The Comparator data low mask bits control whether the selected
comparator compares the data bus bits [7:0] to the corresponding comparator data compare bits. This register
is available only for comparators A and C.
0 Do not compare corresponding data bit
1 Compare corresponding data bit
8.4 Functional Description
This section provides a complete functional description of the S12XDBG module. If the part is in secure
mode, the S12XDBG module can generate breakpoints but tracing is not possible.
MC9S12XE-Family Reference Manual Rev. 1.25
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