User`s manual

2.2.4 Notes on Using the JTAG Clock (TCK) and AUD Clock (AUDCK)

1. When JTAG clock (TCK) is used, set the JTAG clock (TCK) frequency to lower than the

frequency of half of the CPU clock.

2. Set the AUD clock (AUDCK) frequency to 50 MHz or below for PCMCIA and PCI cards. The

upper limit of the AUD clock must be lower than the CPU clock and the lower limit must be

the quarter of the CPU clock.

2.2.5 Notes on Setting the [Breakpoint] Dialog Box

1. When an odd address is set, the next lowest even address is used.

2. A BREAKPOINT is accomplished by replacing instructions of the specified address.

Accordingly, it can be set only to the internal RAM area. However, a BREAKPOINT cannot

be set to the following addresses:

•

An area other than CS0 to CS6 and the internal RAM

•

An instruction in which Break Condition 2 is satisfied

•

A slot instruction of a delayed branch instruction

•

An area that can be only read by MMU

3. During step execution, a BREAKPOINT is disabled.

4. Conditions set at Break Condition 2 are disabled when an instruction to which a

BREAKPOINT has been set is executed. Do not set a BREAKPOINT to an instruction in

which Break Condition 2 is satisfied.

5. When execution resumes from the address where a BREAKPOINT is specified, single-step

execution is performed at the address before execution resumes. Therefore, realtime operation

cannot be performed.

6. When a BREAKPOINT is set to the slot instruction of a delayed branch instruction, the PC

value becomes an illegal value. Accordingly, do not set a BREAKPOINT to the slot

instruction of a delayed branch instruction.

7. When a BREAKPOINT is set to the cacheable area, the cache block containing the

BREAKPOINT address is filled immediately before and after user program execution.

8. Note on DSP repeat loop:

A BREAKPOINT is equal to a branch instruction. In some DSP repeat loops, branch

instructions cannot be set. For these cases, do not set BREAKPOINTs. Refer to the hardware

manual for details.

9. When the [Normal] option is selected in the [Memory area] group box in the [General] page of

the [Configuration] dialog box, a BREAKPOINT is set to a physical address or a virtual

address according to the SH7729R or SH7709S MMU status during command input when the

VPMAP_SET command setting is disabled. The ASID value of the SH7729R or SH7709S

PTEH register during command input is used. When VPMAP_SET command setting is

enabled, a BREAKPOINT is set to a physical address into which address translation is made