
Configuration Error
•
A low pulse on the
nSTATUS
pin indicates a configuration error.
•
Errors require reconfiguration.
•
After a low pulse indicating an error, configuration stops. The
nSTATUS
pin remains high.
•
Following an error, the SDM drives
nSTATUS
low after the external host drives
nCONFIG
low.
•
The device enters Idle state after the
nSTATUS
pin recovers to initial pre-configuration low state.
User Mode
•
The SDM drives the
INIT_DONE
pin high after initializing internal registers and releases GPIO pins from the high
impedance state. The device enters user mode. The entire device does not enter user mode simultaneously. Intel requires
you to include the Reset Release in your design. Use the
nINIT_DONE
output of the Reset Release Intel FPGA IP to hold
your application logic in the reset state until the entire FPGA fabric is in user mode. Failure to include this IP in your
design may result in intermittent application logic failures.
•
The
nCONFIG
pin should remain high in user mode.
•
You may re-configure the device by driving
nCONFIG
pin from low to high.
Device Clean
•
In the Device Clean state the design stops functioning.
•
Device cleaning zeros out all configuration data.
•
The Intel Agilex device drives
CONF_DONE
and
INIT_DONE
low.
•
The SDM drives the
nSTATUS
pin low when device cleaning completes.
JTAG Configuration
Note:
You can perform JTAG configuration anytime from any state except the power-on and SDM startup state. The Intel Agilex
device cancels the previous configuration and accepts the reconfiguration data from the JTAG interface. The
nCONFIG
signal
must be held in a stable state during JTAG configuration. A falling edge on the
nCONFIG
signal cancels the JTAG configuration.
Note:
The SDM only samples the
MSEL
pins at power-on. The SDM drives
nCONFIG
high to initiate bitstream configuration using the
configuration scheme you specified at power-on.
2. Intel Agilex Configuration Details
UG-20205 | 2019.10.09
Intel
®
Agilex
™
Configuration User Guide
22
Содержание Agilex
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