Intel Agilex Configuration User Manual page 18

Reconfiguration Timing
The second event the timing diagram illustrates the Intel Agilex device reconfiguration. If you change the
power-on, you must power-cycle the Intel Agilex. Power cycling forces the SDM to sample the
the device.
The numbers in the Reconfiguration part of the timing diagram mark the following events:
1. The external host drives
2. The SDM initiates device cleaning.
3. The SDM drives the
4. The external host drives the
5. The SDM drives the
Configuration Error
The numbers in the Configuration Error part of the timing diagram mark the following events:
1. The SDM drives
device does not assert
2. The SDM enters the error state. During the error state,
from high to low and then from low to high to restart configuration.
nCONFIG
3. The SDM enters the idle state. The external host deasserts
low to high transition on
Note: The
nCONFIG
when
Apart from error reporting,
Power Supply Status
The power-on reset (POR) holds the Intel Agilex device in the reset state until the power supply outputs are within the
recommended operating range.
the Intel Agilex device I/O pins and programming registers remain tri-stated.
For more information about POR refer to the Intel Agilex Power Management User Guide. For more information about
refer to the Intel Agilex datasheet.
Intel ® Agilex ™ Configuration User Guide
18
signal low.
nCONFIG
signal low when device cleaning is complete.
nSTATUS
signal high to initiate reconfiguration.
nCONFIG
signal high signaling the device is ready for reconfiguration and starts to reconfigure.
nSTATUS
signal low for
nSTATUS 1 ms -0.5 ms/+9.5 ms
indicating that configuration did not complete successfully.
CONF_DONE
. You can also power cycle the device by following the device power down sequence.
nCONFIG
signal can only change levels when it has the same value as
= 1, can transition from 1 to 0. When
nSTATUS nCONFIG
nSTATUS
defines the maximum power supply ramp time. If POR does not meet the
t
RAMP
to indicate a configuration error. The Intel Agilex
should be in the high state. The application must drive
nCONFIG
. The device is ready for reconfiguration by driving a
nCONFIG
nSTATUS
only changes to follow
nCONFIG
2. Intel Agilex Configuration Details
UG-20205 | 2019.10.09
MSEL
pins before reconfiguring
MSEL
. This restriction means that
nSTATUS
= 0, can transition from 0 to 1.
nCONFIG
.
setting after
time,
t
RAMP
t
RAMP
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