Nstatus - Intel Agilex Configuration User Manual

The host should assert
asserts during a configuration cycle, that configuration cycle stops. The SDM expects a new configuration cycle to
nCONFIG
begin.
Debugging Suggestions
The host drives

6.7.2. nSTATUS

has the following two functions:
nSTATUS
•
To behave as an acknowledge for
•
To behave as an error status signal. It is important to monitor
Note:
does not go low for PR failures.
nSTATUS
Generally, the Intel Agilex device changes the value of
example, after POR,
drives
nSTATUS
In previous device families the deassertion of
devices, when using Avalon-ST configuration scheme, after the Intel Agilex device drives
monitor the
AVST_READY
asserts if an error occurs during configuration. If an error occurs during configuration, the length of the
nSTATUS
low pulse varies depending upon the type of failure. The pulse ranges from .5 ms to 1.5 ms.
assertion is asynchronous to data error detection. Intel Agilex devices do not support the auto-restart
nSTATUS
configuration after error option.
Previous device families implement the
wire OR an Intel Agilex
Debugging Suggestions
Ensure
nSTATUS
need to power cycle the PCB.
Intel ® Agilex ™ Configuration User Guide
106
to clear the device. Then the host should deassert
nCONFIG
. Be sure that it is not floating or stuck low.
nCONFIG
nCONFIG
asserts after
nSTATUS nCONFIG
high.
nSTATUS
signal to determine when the device is ready to accept configuration data.
nSTATUS
signal with the
nSTATUS
acknowledges . If
nCONFIG nSTATUS
nCONFIG
.
to identify configuration failures.
nSTATUS
to follow the value of
nSTATUS
asserts. When the host drives
indicates the device is ready for configuration. For Intel Agilex
as an open drain with a weak internal pull-up. Consequently, you cannot
signal from earlier device families.
nSTATUS
is not following
nCONFIG
6. Intel Agilex Debugging Guide
UG-20205 | 2019.04.03
initiate configuration. If
nCONFIG
should remain high during configuration.
, except after an error. For
nCONFIG
high, the Intel Agilex device
nCONFIG
high, you must also
nSTATUS
, the FPGA may not have exited POR. You may
nSTATUS
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