Section 7 User Break Controller (UBC)
Rev. 0.50 May 18, 2006 Page 171 of 1588
REJ09B0313-0050
Section 7 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. Instruction fetch or data read/write (bus cycle
(CPU or DMAC) selection in the case of data read/write), data size, data contents, address value,
and stop timing in the case of instruction fetch are break conditions that can be set in the UBC.
Since this LSI uses a Harvard architecture, instruction fetch on the CPU bus (C bus) is performed
by issuing bus cycles on the instruction fetch bus (F bus), and data access on the C bus is
performed by issuing bus cycles on the memory access bus (M bus). The internal bus (I bus)
consists of the internal CPU bus, on which the CPU issues bus cycles, and the internal DMA bus,
on which the DMA issues bus cycles. The UBC monitors the C bus and I bus.
7.1 Features
1. The following break comparison conditions can be set.
Number of break channels: two channels (channels 0 and 1)
User break can be requested as the independent condition on channels 0 and 1.
Address
Comparison of the 32-bit address is maskable in 1-bit units.
One of the four address buses (F address bus (FAB), M address bus (MAB), internal CPU
address bus (ICAB), and internal DMA address bus (IDAB)) can be selected.
Data
Comparison of the 32-bit data is maskable in 1-bit units.
One of the three data buses (M data bus (MDB), internal CPU data bus (ICDB), and
internal DMA data bus (IDDB)) can be selected.
Bus selection when I bus is selected
Internal CPU bus or internal DMA bus
Bus cycle
Instruction fetch (only when C bus is selected) or data access
Read/write
Operand size
Byte, word, and longword
2. In an instruction fetch cycle, it can be selected whether the start of user break interrupt
exception processing is set before or after an instruction is executed.
3. When a break condition is satisfied, a trigger signal is output from the
UBCTRG
pin.
Summary of Contents for Single-Chip Microcomputer SH7203
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Page 52: ...Section 1 Overview Rev 0 50 May 18 2006 Page 22 of 1588 REJ09B0313 0050 ...
Page 98: ...Section 2 CPU Rev 0 50 May 18 2006 Page 68 of 1588 REJ09B0313 0050 ...
Page 128: ...Section 4 Clock Pulse Generator CPG Rev 0 50 May 18 2006 Page 98 of 1588 REJ09B0313 0050 ...
Page 200: ...Section 6 Interrupt Controller INTC Rev 0 50 May 18 2006 Page 170 of 1588 REJ09B0313 0050 ...
Page 242: ...Section 8 Cache Rev 0 50 May 18 2006 Page 212 of 1588 REJ09B0313 0050 ...
Page 400: ...Section 9 Bus State Controller BSC Rev 0 50 May 18 2006 Page 370 of 1588 REJ09B0313 0050 ...
Page 696: ...Section 13 Watchdog Timer WDT Rev 0 50 May 18 2006 Page 666 of 1588 REJ09B0313 0050 ...
Page 726: ...Section 14 Realtime Clock RTC Rev 0 50 May 18 2006 Page 696 of 1588 REJ09B0313 0050 ...
Page 876: ...Section 17 I2 C Bus Interface 3 IIC3 Rev 0 50 May 18 2006 Page 846 of 1588 REJ09B0313 0050 ...
Page 1054: ...Section 21 D A Converter DAC Rev 0 50 May 18 2006 Page 1024 of 1588 REJ09B0313 0050 ...
Page 1294: ...Section 24 LCD Controller LCDC Rev 0 50 May 18 2006 Page 1264 of 1588 REJ09B0313 0050 ...
Page 1386: ...Section 26 I O Ports Rev 0 50 May 18 2006 Page 1356 of 1588 REJ09B0313 0050 ...
Page 1512: ...Section 30 List of Registers Rev 0 50 May 18 2006 Page 1482 of 1588 REJ09B0313 0050 ...
Page 1598: ...Section 31 Electrical Characteristics Rev 0 50 May 18 2006 Page 1568 of 1588 REJ09B0313 0050 ...
Page 1606: ...Appendix Rev 0 50 May 18 2006 Page 1576 of 1588 REJ09B0313 0050 ...
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