Section 29 User Break Controller (UBC)
Rev.1.00 Dec. 13, 2005 Page 1132 of 1286
REJ09B0158-0100
29.6 Usage
Notes
•
A desired break may not occur between the time when the instruction for rewriting the UBC
register is executed and the time when the written value is actually reflected on the register.
After the UBC register is updated, execute one of the following three methods.
A. Read the updated UBC register, and execute a branch using the RTE instruction.
(It is not necessary that a branch using the RTE instruction is next to a reading UBC
register.)
B. Execute the ICBI instruction for any address (including non-cacheable area).
(It is not necessary that the ICBI instruction is next to a reading UBC register.)
C. Set 0(initial value) to IRMCR.R1 before updating the UBC register and update with
following sequence.
1. Write the UBC register.
2. Read the UBC register which is updated at 1.
3. Write the value which is read at 2 to the UBC register.
Note: When two or more UBC registers are updated, executing these methods at each updating
the UBC registers is not necessary. At only last updating the UBC register, execute one of
these methods.
•
The PCB bit of the CRR0 and CRR1 registers is valid only when the instruction fetch is
specified as the match condition.
•
If the sequential break conditions are set, the sequential break conditions are satisfied when the
conditions for the first and second channels in the sequence are satisfied in this order.
Therefore, if the conditions are set so that the conditions for channels 0 and 1 should be
satisfied simultaneously for the same bus cycle, the sequential break conditions will not be
satisfied, causing no break.
•
For the SLEEP instruction, do not allow the post-instruction-execution break where the
instruction fetch cycle is the match condition. For the instructions preceding the SLEEP
instruction by one to five instructions, do not allow the break where the operand access is the
match condition.
•
If the user break and other exceptions occur for the same instruction, they are determined
according to the specified priority. For the priority, refer to section 5, Exception Handling. If
the exception having the higher priority occurs, the user break does not occur.
The pre-instruction-execution break is accepted prior to any other exception.
Содержание SH7780 Series
Страница 2: ...Rev 1 00 Dec 13 2005 Page ii of l ...
Страница 28: ...Rev 1 00 Dec 13 2005 Page xxviii of l ...
Страница 50: ...Rev 1 00 Dec 13 2005 Page l of l ...
Страница 82: ...Section 1 Overview Rev 1 00 Dec 13 2005 Page 32 of 1286 REJ09B0158 0100 ...
Страница 122: ...Section 3 Instruction Set Rev 1 00 Dec 13 2005 Page 72 of 1286 REJ09B0158 0100 ...
Страница 146: ...Section 4 Pipelining Rev 1 00 Dec 13 2005 Page 96 of 1286 REJ09B0158 0100 ...
Страница 196: ...Section 6 Floating Point Unit FPU Rev 1 00 Dec 13 2005 Page 146 of 1286 REJ09B0158 0100 ...
Страница 292: ...Section 9 L Memory Rev 1 00 Dec 13 2005 Page 242 of 1286 REJ09B0158 0100 ...
Страница 450: ...Section 11 Local Bus State Controller LBSC Rev 1 00 Dec 13 2005 Page 400 of 1286 REJ09B0158 0100 ...
Страница 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
Страница 674: ...Section 15 Clock Pulse Generator CPG Rev 1 00 Dec 13 2005 Page 624 of 1286 REJ09B0158 0100 ...
Страница 692: ...Section 16 Watchdog Timer and Reset Rev 1 00 Dec 13 2005 Page 642 of 1286 REJ09B0158 0100 ...
Страница 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
Страница 1004: ...Section 24 Multimedia Card Interface MMCIF Rev 1 00 Dec 13 2005 Page 954 of 1286 REJ09B0158 0100 ...
Страница 1032: ...Section 25 Audio Codec Interface HAC Rev 1 00 Dec 13 2005 Page 982 of 1286 REJ09B0158 0100 ...
Страница 1070: ...Section 26 Serial Sound Interface SSI Module Rev 1 00 Dec 13 2005 Page 1020 of 1286 REJ09B0158 0100 ...
Страница 1104: ...Section 27 NAND Flash Memory Controller FLCTL Rev 1 00 Dec 13 2005 Page 1054 of 1286 REJ09B0158 0100 ...
Страница 1150: ...Section 28 General Purpose I O GPIO Rev 1 00 Dec 13 2005 Page 1100 of 1286 REJ09B0158 0100 ...
Страница 1184: ...Section 29 User Break Controller UBC Rev 1 00 Dec 13 2005 Page 1134 of 1286 REJ09B0158 0100 ...
Страница 1266: ...Section 31 Electrical Characteristics Rev 1 00 Dec 13 2005 Page 1216 of 1286 REJ09B0158 0100 ...
Страница 1328: ...Appendix Rev 1 00 Dec 13 2005 Page 1278 of 1286 REJ09B0158 0100 ...
Страница 1336: ...Rev 1 00 Dec 13 2005 Page 1286 of 1286 REJ09B0158 0100 ...
Страница 1339: ......
Страница 1340: ...SH7780 Hardware Manual ...