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Section 11 User Break Controller (UBC)
Rev. 4.00 Sep. 14, 2005 Page 241 of 982
REJ09B0023-0400
Section 11 User Break Controller (UBC)
The user break controller (UBC) provides functions that simplify program debugging. These
functions make it easy to design an effective self-monitoring debugger, enabling the chip to debug
programs without using an in-circuit emulator. Break conditions that can be set in the UBC are
instruction fetch or data read/write access, data size, data contents, address value, and stop timing
in the case of instruction fetch.
11.1 Features
The UBC has the following features:
1. The following break comparison conditions can be set.
Number of break channels: two channels (channels A and B)
User break can be requested as either the independent or sequential condition on channels A
and B (sequential break setting: channel A and then channel B match with break conditions,
but not in the same bus cycle).
•
Address
Comparison bits are maskable in 1-bit units.
One of the four address buses (logic address bus (LAB), internal address bus (IAB),
X-memory address bus (XAB), and Y-memory address bus (YAB)) can be selected.
•
Data
Only on channel B, 32-bit maskable.
One of the four data buses (L-bus data (LDB), I-bus data (IDB), X-memory data bus (XDB)
and Y-memory data bus (YDB)) can be selected.
•
Bus cycle
Instruction fetch or data access
•
Read/write
•
Operand size
Byte, word, and longword
2. A user-designed user-break condition exception processing routine can be run.
3. In an instruction fetch cycle, it can be selected that a break is set before or after an instruction
is executed.
4. Maximum repeat times for the break condition (only for channel B): 2
12
−
1 times.
5. Eight pairs of branch source/destination buffers.
Summary of Contents for HD6417641
Page 2: ...Rev 4 00 Sep 14 2005 Page ii of l...
Page 7: ...Rev 4 00 Sep 14 2005 Page vii of l...
Page 11: ...Rev 4 00 Sep 14 2005 Page xi of l USB Universal serial bus WDT Watch dog timer...
Page 12: ...Rev 4 00 Sep 14 2005 Page xii of l...
Page 28: ...Rev 4 00 Sep 14 2005 Page xxviii of l...
Page 204: ...Section 4 Clock Pulse Generator CPG Rev 4 00 Sep 14 2005 Page 154 of 982 REJ09B0023 0400...
Page 212: ...Section 5 Watchdog Timer WDT Rev 4 00 Sep 14 2005 Page 162 of 982 REJ09B0023 0400...
Page 228: ...Section 6 Power Down Modes Rev 4 00 Sep 14 2005 Page 178 of 982 REJ09B0023 0400...
Page 246: ...Section 8 X Y Memory Rev 4 00 Sep 14 2005 Page 196 of 982 REJ09B0023 0400...
Page 318: ...Section 11 User Break Controller UBC Rev 4 00 Sep 14 2005 Page 268 of 982 REJ09B0023 0400...
Page 454: ...Section 12 Bus State Controller BSC Rev 4 00 Sep 14 2005 Page 404 of 982 REJ09B0023 0400...
Page 504: ...Section 14 U Memory Rev 4 00 Sep 14 2005 Page 454 of 982 REJ09B0023 0400...
Page 566: ...Section 17 Compare Match Timer CMT Rev 4 00 Sep 14 2005 Page 516 of 982 REJ09B0023 0400...
Page 868: ...Section 21 A D Converter Rev 4 00 Sep 14 2005 Page 818 of 982 REJ09B0023 0400...
Page 914: ...Section 23 I O Ports Rev 4 00 Sep 14 2005 Page 864 of 982 REJ09B0023 0400...
Page 956: ...Section 24 List of Registers Rev 4 00 Sep 14 2005 Page 906 of 982 REJ09B0023 0400...
Page 1016: ...Section 25 Electrical Characteristics Rev 4 00 Sep 14 2005 Page 966 of 982 REJ09B0023 0400...
Page 1024: ...Appendix Rev 4 00 Sep 14 2005 Page 974 of 982 REJ09B0023 0400...
Page 1032: ...Rev 4 00 Sep 14 2005 Page 982 of 982 REJ09B0023 0400 X X Y data addressing 52 X Y memory 193...
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