User`s manual

Section 2 Software Specifications when Using the SH7147 Group Debugging MCU Board
Rev. 1.00 Apr. 04, 2008 Page 25 of 30
REJ10J1828-0100
2.2.4 Note on Using the JTAG (H-UDI) Clock (TCK)
1. Set the JTAG clock (TCK) frequency as a value that is lower than the frequency of the
peripheral clock (Pφ) and 1/4 or lower than the frequency of the bus clock (Bφ).
2. The initial value of the JTAG clock (TCK) is 2.5 MHz.
3. A value to be set for the JTAG clock (TCK) is initialized after executing [Reset CPU] or
[Reset Go]. Thus the TCK value will be 2.5 MHz.
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.
A BREAKPOINT cannot be set to the following addresses:
⎯ An area other than CS, the internal RAM, and the internal flash memory
⎯ An instruction in which Break Condition 2 is satisfied
⎯ A slot instruction of a delayed branch instruction
3. During step operation, specifying BREAKPOINTs and Event Condition breaks are disabled.
4. When execution resumes from the address where a BREAKPOINT is specified and a break
occurs before Event Condition execution, single-step operation is performed at the address
before execution resumes. Therefore, realtime operation cannot be performed.
5. If an address of a BREAKPOINT cannot be correctly set in the ROM, a mark z will be
displayed in the [BP] area of the address on the [Source] or [Disassembly] window by
refreshing the [Memory] window, etc. after Go execution. However, no break will occur at
this address. When the program halts with the event condition, the mark z disappears.
2.2.6 Notes on Setting the [Event Condition] Dialog Box and the BREAKCONDITION_
SET Command
1. When [Go to cursor], [Step In], [Step Over], or [Step Out] is selected, the settings of Event
Condition 3 are disabled.
2. When an Event Condition is satisfied, emulation may stop after two or more instructions have
been executed.