11. Base vs. Factory Preprogrammed Devices
The Si5386 devices can be ordered as "base" or "factory-preprogrammed" (also known as "custom OPN") versions.
11.1 "Base" Devices (a.k.a. "Blank" Devices)
• Example "base" orderable part numbers (OPNs) are of the form "Si5386A-E-GM."
• Base devices are available for applications where volatile reads and writes are used to program and configure the device for a
particular application.
• Base devices do not power up in a usable state (all output clocks are disabled).
• Base devices are, however, configured by default to use a 1.8 V compatible I/O voltage setting for the host I
2
C/SPI and external 54
MHz XO as the reference clock by default.
• Additional programming of a base device is mandatory to achieve a usable configuration.
• See the on-line lookup utility at
https://www.skyworksinc.com/en/Application-Pages/Timing-Lookup-Customize
configuration plan and register settings for any base OPN.
11.2 "Factory Preprogrammed" (Custom OPN) Devices
• Factory preprogammed devices use a “custom OPN”, such as Si5386A-Exxxxx-GM, where “xxxxx” is a sequence of characters
assigned by Skyworks for each customer-specific configuration. These characters are referred to as the “OPN ID”. Customers must
initiate custom OPN creation using the ClockBuilder Pro software.
• Many customers prefer to order devices which are factory preprogrammed for a particular application that includes specifying
the clock input frequencies, the clock output frequencies, as well as the other options, such as automatic clock selection, loop
bandwidth, etc. The ClockBuilder software is required to select among all of these options and to produce a project file which
Skyworks uses to preprogram all devices with custom orderable part number (“custom OPN”).
• Custom OPN devices contain all of the initialization information in their non-volatile memory (NVM) so that it powers up fully
configured and ready to go.
• Because preprogrammed device applications are inherently quite different from one another, the default power up values of
the register settings can be determined using the custom OPN utility at:
https://www.skyworksinc.com/en/Application-Pages/Timing-
• Custom OPN devices include a device top mark which includes the unique OPN ID. Refer to the device data sheet's Ordering Guide
and Top Mark sections for more details.
Both "base" and "factory preprogrammed" devices can have their operating configurations changed at any time using volatile reads and
writes to the registers. Both types of devices can also have their current register configuration written to the NVM by executing an NVM
bank burn sequence (see
11.3 Part Numbering Summary
Part numbers are of the form:
Si<Part Num Type><Grade>-<Device Revision><OPN ID>-<Temp Grade><Package ID>
For example:
•
Si5386A-E12345-GM:
Applies to a factory preprogrammed OPN (Ordering Part Number) device. These devices are programmed at
the factory with the frequency plan and all other operating characteristics defined by the user's ClockBuilder Pro project file.
•
Si5386A-E-GM:
Applies to a "base" device. Base devices are factory programmed to a specific base part type (e.g., Si5386) but
exclude
any user-defined frequency plan or other operating characteristics which would be selected in ClockBuilder Pro.
Si5386 Rev. E Reference Manual • Base vs. Factory Preprogrammed Devices
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021
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