S912XHZ512F1VAG Datasheet, PDF (786/978 Pages) Freescale Semiconductor, Inc – Covers MC9S12XHZ384, MC9S12XHZ256

Chapter 22 S12X Debug (S12XDBGV3) Module
22.3.2.8.7 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 22-20. Debug Comparator Data High Mask Register (DBGXDHM)
Read: Anytime. See Table 22-29 for visible register encoding.
Write: If DBG not armed. See Table 22-29 for visible register encoding.
Table 22-37. 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
22.3.2.8.8 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 22-21. Debug Comparator Data Low Mask Register (DBGXDLM)
Read: Anytime. See Table 22-29 for visible register encoding.
Write: If DBG not armed. See Table 22-29 for visible register encoding.
Table 22-38. 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
22.4 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.
MC9S12XHZ512 Data Sheet, Rev. 1.06
786
Freescale Semiconductor