HD6417705F133V Datasheet, PDF (589/741 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series

Section 22 User Break Controller
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.
22.1 Features
The UBC has the following features:
• 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 (Compares 40 bits configured of the ASID and addresses 32 bits: the ASID can be
selected either all-bit comparison or all-bit mask. Comparison bits for the address are
maskable in 1-bit units; user can mask addresses at lower 12 bits (4 k page), lower 10 bits
(1 k page), or any size of page, etc.)
One of the two address buses (L bus address (LAB) and I bus address (IAB)) can be
selected.
 Data (only on channel B, 32-bit maskable)
One of the two data buses (L bus data (LDB) and I bus data (IDB)) can be selected.
 Bus cycle: Instruction fetch or data access
 Read/write
 Operand size: Byte, word, or longword
• User break is generated upon satisfying break conditions. A user-designed user-break
condition exception processing routine can be run.
• In an instruction fetch cycle, it can be selected that a break is set before or after an instruction
is executed.
• Maximum repeat times for the break condition (only for channel B): 2¹² – 1 times.
• Eight pairs of branch source/destination buffers.
UBCS311A_000020020100
Rev. 2.00, 09/03, page 541 of 690