PC912XDP512F0MPVR datasheet(763/1348 Pages) FREESCALE

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Chapter 20 S12X Debug (S12XDBGV3) Module

MC9S12XDP512 Data Sheet, Rev. 2.21

Freescale Semiconductor

765

20.3.2.8.2

Debug Comparator Address High Register (DBGXAH)

Read: Anytime

Write: Anytime when S12XDBG not armed.

20.3.2.8.3

Debug Comparator Address Mid Register (DBGXAM)

Read: Anytime

Write: Anytime when S12XDBG not armed.

Address: 0x0029

76543210

Bit 22

Bit 21

Bit 20

Bit 19

Bit 18

Bit 17

Bit 16

Reset

00000000

= Unimplemented or Reserved

Figure 20-15. Debug Comparator Address High Register (DBGXAH)

Table 20-29. DBGXAH Field Descriptions

Field

Description

6–0

Bit[22:16]

Comparator Address High Compare Bits — The Comparator address high compare bits control whether the

selected comparator will compare the address bus bits [22:16] to a logic one or logic zero. This register byte is

ignored for XGATE compares.

0 Compare corresponding address bit to a logic zero

1 Compare corresponding address bit to a logic one

Address: 0x002A

76543210

Bit 15

Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

Reset

00000000

Figure 20-16. Debug Comparator Address Mid Register (DBGXAM)

Table 20-30. DBGXAM Field Descriptions

Field

Description

7–0

Bit[15:8]

Comparator Address Mid Compare Bits — The Comparator address mid compare bits control whether the

selected comparator will compare the address bus bits [15:8] to a logic one or logic zero.

0 Compare corresponding address bit to a logic zero

1 Compare corresponding address bit to a logic one

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