r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 171
r5f71374an80fpv
Manufacturer Part Number
r5f71374an80fpv
Description
32-bit Risc Microcomputer Superh?? Risc Engine Family
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R5F71374AN80FPV.pdf
(1154 pages)
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7.4.2
1. When L bus/instruction fetch/read/word, longword, or the operand size is not included is set in
2. If the break condition matches when a user break on instruction fetch is specified so that the a
3. When the break condition is specified so that a user break is generated after execution of the
4. When an instruction fetch cycle is set, the break data register (BDRA or BDRB) is ignored.
5. If the I bus is set as the condition for a user break on instruction fetch cycle, the I bus is
the break bus cycle register (BBRA or BBRB), the break condition becomes the L bus
instruction fetch cycle. Whether a user break is set before or after the execution of the
instruction can then be selected with the PCBA or PCBB bit in the break control register
(BRCR) for the corresponding channel. If an instruction fetch cycle is set as a break condition,
clear LSB in the break address register (BARA or BARB) to 0. A user break cannot be
generated as long as this bit is set to 1.
break is generated before the execution of the instruction, the user break is generated at the
point when it has become deterministic that the instruction will be executed after it is fetched.
This means this feature cannot be used on instructions fetched by overrun (instructions fetched
at a branch or during an interrupt transition, but not executed). When this kind of break
condition is set for the delay slot of a delayed branch instruction, a user break is generated
prior to execution of the delayed branch instruction.
instruction, the instruction that has met the break condition is executed and then the user break
is generated before the next instruction is executed. As with pre-execution user breaks, this
cannot be used with overrun fetch instructions. When this kind of break condition is set for a
delayed branch instruction and its delay slot, a user break is not generated until the processing
jumps to the first instruction at the branch destination.
Therefore, break data cannot be set for the user break of the instruction fetch cycle.
monitored for instruction fetch cycles to detect condition match. For details, see 5 in section
7.4.1, Flow of the User Break Operation.
Note: If a branch does not occur at a delay condition branch instruction, the subsequent
User Break on Instruction Fetch Cycle
instruction is not recognized as a delay slot.
Rev. 1.00 Sep. 21, 2007 Page 145 of 1124
Section 7 User Break Controller (UBC)
REJ09B0402-0100
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