7. Writing A New Frequency Plan or Device Configuration to Non-volatile Memory (OTP)
The Si5381/82 device loads the Non-Volatile Memory (OTP) on either a powerup or a hard reset, overwriting any previous volatile reg-
ister changes. This allows the device to begin functioning as desired on powerup/hard-reset without manual intervention. To restart the
device while preserving volatile changes and without loading the OTP, use soft-reset through the registers or EVB-GUI.
Note:
Writing to the device non-volatile memory (OTP) is NOT the same as writing a configuration into the Si5381/82 using ClockBuil-
derPro on the Si5381/82A-E-EB. Writing a configuration into the EVB from ClockBuilderPro is done using Si5381/82 RAM space and
can be done virtually an unlimited number of times. Writing to OTP is limited as described below.
Refer to the Si5381/82 Family Reference Manual and device datasheet for information on how to write a configuration to the EVB
DUT’s non-volatile memory (OTP). The OTP can be programmed a maximum of
two
times only. Care must be taken to ensure the
configuration desired is valid when choosing to write to OTP.
Si5381/82 Evaluation Board User's Guide
Writing A New Frequency Plan or Device Configuration to Non-volatile Memory (OTP)
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