PC912XDP512F0MPVR datasheet(711/1348 Pages) FREESCALE

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Chapter 19 S12X Debug (S12XDBGV2) Module

MC9S12XDP512 Data Sheet, Rev. 2.21

Freescale Semiconductor

713

19.3.1.11.6

Debug Comparator Data Low Register (DBGXDL)

Read: Anytime

Write: Anytime when DBG not armed.

19.3.1.11.7

Debug Comparator Data High Mask Register (DBGXDHM)

Read: Anytime

Write: Anytime when DBG not armed.

0x002D

76543210

Bit 7

Bit 0

Reset

00000000

Figure 19-19. Debug Comparator Data Low Register (DBGXDL)

Table 19-33. DBGXDL Field Descriptions

Field

Description

7–0

Bits [7:0]

Comparator Data Low Compare Bits — The comparator data low compare bits control whether the selected

comparator compares the data bus bits [7:0] to a logic 1 or logic 0. 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 0

1 Compare corresponding data bit to a logic 1

0x002E

76543210

Bit 15

Bit 8

Reset

00000000

Figure 19-20. Debug Comparator Data High Mask Register (DBGXDHM)

Table 19-34. 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

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