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■User circuit part parameter size
The Writing data (transient area) of the FPGA register in the user circuit part can be saved in non-volatile memory as FPGA
parameters from the start address to the size specified in the "User circuit part parameter size". After FPGA configuration is
complete, parameters of a size equivalent to that saved in non-volatile memory are set to Writing data (transient area) (FPGA
register address: 1000_B000H to 1000_B2FFH).
Item
User circuit part parameter size
With settings from 385 to 65535, it works as 384.
For User circuit part parameter size, the set values for the following operations are valid.
• When writing from the FPGA Module Configuration Tool
• When writing by FPGA parameter save request (RY2)
Configuration
The FPGA module transfers the configuration data saved in the configuration ROM or the configuration data downloaded by
the FPGA design software to the FPGA.
If the configuration is completed successfully, the FPGA CONF. LED lights up, and the FPGA parameters saved in the
nonvolatile memory are set to the FPGA register areas.
Once the settings to the FPGA register are completed, one of the following states will be entered depending on the "FPGA
control automatic start setting".
• If enabled: FPGA control is started.
• If disabled: FPGA control remains stopped.
If disabled, FPGA control start request (RY0) can be turned on at any time to start FPGA control.
■Notification of configuration anomaly
If an error occurs in the FPGA configuration, the FPGA module will be in the following states.
• Latest error code (RWr0): FPGA configuration error (error code: 3C01H)
• Error status flag (RXA): ON
• ERR. LED: On
• FPGA CONF. LED: Off
The FPGA module monitors the configuration status of the FPGA even after configuration completed
successfully. If an error is detected by this monitoring, it will be in the same state. ( Page 445 TROUBLE
EXAMPLES of DC INPUT/OUTPUT)
■Causes of configuration errors and corrective actions
Item
Configuration at power-on, remote
RESET, and FPGA download (JIC
format/RPD format file)
Configuration employing FPGA
download (SOF format file)
In common
12 FUNCTIONS
312
12.4 FPGA Configuration Function
Cause
• The configuration data stored in the configuration
ROM is invalid.
• The configuration ROM has been erased.
• An error was detected when accessing the
configuration ROM.
• FPGA downloaded configuration data is invalid.
• FPGA download was performed while function setting
switch 5 was OFF.
An error occurred when transferring the configuration
data to the FPGA due to the effects of noise or other
causes.
Setting range
0 to 384
(Default: 0)
Corrective action
After eliminating the cause of the error, turn on and off
the power or perform a remote RESET.
For details on the corrective action, refer to the following.
Page 445 TROUBLE EXAMPLES of DC INPUT/
OUTPUT
After eliminating the cause of the error, turn off and on
the power, or perform a remote reset. Then download
from the FPGA design software again.
For details on the corrective action, refer to the following.
Page 445 TROUBLE EXAMPLES of DC INPUT/
OUTPUT
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Troubleshooting
