Renesas Technology, Tools FAQs
Last Updated: November 19, 2001
Document Number: 01110501_e
Q.
My program stops when I execute it on Emulator M32xxxTx-SDI (-E), even though there are no software or hardware breaks in the
settings. What is causing this problem?
A.
Please check the following items.
Check that the operating frequency of the target system is within the guaranteed operating range.1.
When connecting M32xxxTx-SDI(-E) via JTAG, check the condition of the connecter between the target MCU and the
emulator.
(1) Is it connected through the input/output buffer?
(2) Is each signal line wired according to the recommended circuit diagrams?
* Recommended circuit diagram can be found in the M32100T2-SDI-E Instruction Manual.
In the JTAG connection, noise may cause the emulator to mis-operate. Please try the two noise reduction methods as possible
workarounds.
(1) Insert a 50©serial resistor between the input/output buffer and the signal lines listed below which are attached to the
connector for emulator-use. This will be effective in buffering noise generated on these lines.
No. 1 pin (TCLK line)
No. 3 pin (TDI line)
No. 4 pin (TDO line)
No. 5 pin (TMS line)
No. 6 pin (TRST line)
No. 7 pin (DBI line)
(2) Connect a 0.1µF ceramic capacitor between the Vcc (No. 9 pin) and Vss (No. 2 pin) of the connector for the emulator.
This is effective in buffering noise generated on the Vcc (No. 2 pin) line.
2.
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