PC912XDP512F0MPVR datasheet(710/1348 Pages) FREESCALE

710 / 1348 page

Chapter 19 S12X Debug (S12XDBGV2) Module

MC9S12XDP512 Data Sheet, Rev. 2.21

712

Freescale Semiconductor

19.3.1.11.4

Debug Comparator Address Low Register (DBGXAL)

Read: Anytime

Write: Anytime when DBG not armed.

19.3.1.11.5

Debug Comparator Data High Register (DBGXDH)

Read: Anytime

Write: Anytime when DBG not armed.

0x002B

76543210

Bit 7

Bit 0

Reset

00000000

Figure 19-17. Debug Comparator Address Low Register (DBGXAL)

Table 19-31. DBGXAL Field Descriptions

Field

Description

7–0

Bits [7:0]

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 1 or logic 0.

0 Compare corresponding address bit to a logic 0

1 Compare corresponding address bit to a logic 1

0x002C

76543210

Bit 15

Bit 8

Reset

00000000

Figure 19-18. Debug Comparator Data High Register (DBGXDH)

Table 19-32. DBGXDH Field Descriptions

Field

Description

7–0

Bits [15:8]

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 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

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