Renesas PG-FP6 V1.06

PG-FP6 V1.06 12. Troubleshooting
R20UT4469EJ0800 Rev.8.00 Page 155 of 188
Oct.01.21
Cause 2:
Settings of the target system and FP6 may not match.
Action 2:
(1) Baud rate: Check the operating frequency of the target device to see if the baud rate exceeds the
allowable communications rate and if the baud rate is appropriate.
(2) Clock settings: Check if the clock settings for the target device in the FP6 match the actual clock of the
target system.
Cause 3:
The target device might have been reset during communications.
Action 3:
(1) Power supply of the target device: An internal reset might occur in the target device due to voltage
fluctuations during communications with the FP6. Check that the power supply is free of problems.
(2) External reset: A reset might have been applied to the target device by an external reset circuit during
communications with the FP6. Check that the reset circuit is free of problems.
Cause 4:
Communications between the FP6 and target device might not be stable.
Action 4:
Check that there is no noise on the communications line.
Remark: Good communications may not be possible if you are using a self-made cable, a self-made
extension cable, or the like for connection with a tool.