Chapter 8 S12X Debug (S12XDBGV3) Module
MC9S12XE-Family Reference Manual , Rev. 1.19
324
Freescale Semiconductor
8.3.2.8.7
Debug Comparator Data High Mask Register (DBGXDHM)
Read: Anytime. See
for visible register encoding.
Write: If DBG not armed. See
for visible register encoding.
8.3.2.8.8
Debug Comparator Data Low Mask Register (DBGXDLM)
Read: Anytime. See
for visible register encoding.
Write: If DBG not armed. See
for visible register encoding.
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.
Address: 0x002E
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
Reset
0
0
0
0
0
0
0
0
Figure 8-20. Debug Comparator Data High Mask Register (DBGXDHM)
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
Address: 0x002F
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
Reset
0
0
0
0
0
0
0
0
Figure 8-21. Debug Comparator Data Low Mask Register (DBGXDLM)
Table 8-38. DBGXDLM Field Descriptions
Field
Description
7–0
Bits[7:0]
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
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
S12XE
products
in
208
MAPBGA
packages