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MAC7200 Datasheet(PDF) 238 Page - Freescale Semiconductor, Inc

Part # MAC7200
Description  MAC7200 Microcontroller Family Reference Manual
PDF  976 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MAC7200 Datasheet(HTML) 238 Page - Freescale Semiconductor, Inc

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A7S Nexus3 Programmers Model
MAC7200 Microcontroller Family Reference Manual, Rev. 2
160
Freescale Semiconductor
11.10.3.12 Breakpoint / Watchpoint Control (BWC1, BWC2)
Breakpoint/Watchpoint Control Registers 1 and 2 control the generation of Nexus Internal Watchpoints 1
and 2.
NOTE
Watchpoint units 1 and 2 do not have breakpoint capability.
Offset see Table 11-21
Access: User read/write
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
R
BWE
BRW
0
000
00
000
BWO
W
Reset
000
00
000
00
000
00
0
15
14
13
12
11
10
9
876
54
321
0
R
00
00
000
00
000
00
0
W
Reset
000
00
000
00
000
00
0
Figure 11-16. Breakpoint/Watchpoint Control Registers (BWC1, BWC2)
Table 11-30. BWC1, BWC2 Field Description
Field
Description
31–30
BWE
Breakpoint/Watchpoint Enable
00 Internal Nexus Watchpoint Unit disabled
01–10Reserved
11 Internal Nexus Watchpoint enabled
29–28
BRW
Breakpoint/Watchpoint Read/Write Select
00 Watchpoint hit on read accesses
01 Watchpoint hit on write accesses
10 Watchpoint on read or write accesses
11 Reserved
27–19
Reserved for future functionality (read as 0)
18–16
BWO
Breakpoint/Watchpoint Operand
000 No Register Compare (same as BWC1[31:30]2'b00)
001 Compare with BWD1 value only
010 Compare with BWA1 value only
011 Compare with BWA1 and BWD1 values
1xx Reserved
15
BWT
Breakpoint/WatchpointType
0 Watchpoint #1 on instruction accesses
1 Watchpoint #1 on data accesses
14–0
Reserved for future functionality (read as 0)



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