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Si5386 Rev. E Reference Manual
Overview
This reference manual is intended to provide system, PCB design, signal integrity, and
software engineers the necessary technical information to successfully use the Si5386
device in end applications. The official device specifications can be found in the Si5386
data sheet.
The Si5386 is a high-performance, clock generator for small cell applications that de-
mand the highest level of integration and phase noise performance. Based on Skyworks
Solutions' fourth-generation DSPLL technology, the Si5386 combines frequency synthe-
sis and jitter attenuation in a highly integrated digital solution. A single low phase noise
XO connected to the XA/XB input pins provides the reference for the device. This all-dig-
ital solution provides superior performance that is highly immune to external board distur-
bances such as power supply noise.The device configuration is in-circuit programmable
2
via an SPI or I
C serial interface and is easily stored in non-volatile memory (NVM) for
applications which require preconfigured clocks at start-up or after reset.
Work Flow Expectations with ClockBuilder
This reference manual is to be used to describe all the functions and features of the
parts in the product family with register map details on how to implement them. It is im-
portant to understand that the intent is for customers to use the ClockBuilder
ware to provide the initial configuration for the device. Although the register map is docu-
mented, all the details of the algorithms to implement a valid and optimum frequency
plan are fairly complex and are beyond the scope of this document. Real-time changes
to the frequency plan and other operating settings are supported by the devices. Pro-
gramming the Si5386 is made easy with Skyworks' ClockBuilder Pro software available
at https://www.skyworksinc.com/en/Application-Pages/Clockbuilder-Pro-Software.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
1
Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021
Pro and the Register Map
RELATED DOCUMENTS
Si5386 Data Sheet
Si5386A-E-EVB Evaluation Kit
Si5386A-E-EVB User Guide
Si5386A-E-EVB Schematic, BOM and
layout files
Recommended XO Reference Manual
AN1165: Configuring Si538x Devices for
JESD204B/C Wireless Applications
Pro soft-
1

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Summary of Contents for Skyworks Si5386

  • Page 1 Si5386 is made easy with Skyworks' ClockBuilder Pro software available at https://www.skyworksinc.com/en/Application-Pages/Clockbuilder-Pro-Software. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 2: Table Of Contents

    4.2.1 Optimizing Output Phase Noise ..... . .37 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 3 9. XO and Device Circuit Layout Recommendations....9.1 Si5386 64-Pin QFN External XO Layout Recommendations ....67 10.
  • Page 4 14. Revision History......132 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 5: Functional Description

    Si5386. The ClockBuilder Pro software utility provides a simple means of automatically calculating the optimum divider values (P, M, N and R) for the frequencies listed below. In addition to the LTE frequencies, the Si5386 device can simultaneously generate wireline clocks like 156.25 MHz, 155.52 MHz, 125 MHz, etc.
  • Page 6 JESD204B SYSREF clocks. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 7: Configuration For Jesd204B Subclass 1 Clock Generation

    (DCLK) and system reference clocks (SYSREF). The 12 clock outputs can be independently configured as device clocks or SYSREF clocks to drive JESD204B ADCs, DACs, FPGAs, or other logic devices. The Si5386 will clock up to six JESD204B subclass 1 targets, using six DCLK/SYSREF pairs.
  • Page 8: Dspll Loop Bandwidth

    The loss of lock (LOL) feature is a fault monitoring mechanism. Details of the LOL feature can be found in section 3.3 Fault Monitoring. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 9: Holdover Exit Bandwidth

    • R Divisor=2 x (Field +1). For example, Field=3 gives an R divisor of 8. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 10: Modes Of Operation

    Figure 2.1. Modes of Operation Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 11: Reset And Initialization

    VDD and VDDA pins. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 12: Updating Registers During Device Operation

    0x0B24 0xC3 0x0B25 0x02 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 13: Nvm Programming

    Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 14: Holdover Mode

    DSPLL. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 15 1: Use Holdover/Fastlock/Loop bandwidth when exiting from Hold- over Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 16: Vco Freeze Mode

    Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 17: Clock Inputs

    Zero Delay Mode Enabled Reserved Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 18: Automatic Input Switching

    Zero Delay Mode. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 19: Types Of Inputs

    Figure 3.1. AC-Coupled Standard Input Termination Diagrams Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 20 3.3 V +5% then the input must be attenuated before going into the chip. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 21: Unused Inputs

    Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 22: Use Case Scenario: Using More Than Two Inputs

    Hitless switching is enabled = 1, or disabled = 0. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 23: Ramped Input Switching

    When ramped clock switching is enabled, the Si5386 will enter into holdover and then exit from holdover when the exit ramp has been calculated. Note that it can take up to ~1 second for the Si5386 to make the ramp calculations. This means that ramped switching behaves like an exit from holdover.
  • Page 24: Slew Rate Considerations

    3.2.7 Slew Rate Considerations It is well known that low slew rates are a cause of increased jitter. Although the low loop BW of the Si5386 will attenuate a good portion of the jitter that is associated with a low slew rate clock input, if the slew rate is low enough, the output jitter will increase. The following figure shows the effect of a low slew rate on RMS jitter for a differential clock input.
  • Page 25: Fault Monitoring

    Figure 3.4. Si5386 Fault Monitors Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 26: Input Loss Of Signal (Los) Fault Detection

    Writing zero to the bit will clear it. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 27 INTR pin if an LOS occurs for IN0-3. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 28: Out-Of-Frequency (Oof) Detection

    1: Mask (ignore) OOF for interrupt Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 29 Determines the fast OOF alarm clear threshold for IN3, IN2, IN1, FAST_OOF_CLR_THR 0x0055[7:0]-0x0058[7:0] IN0. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 30: Loss Of Lock (Lol) Fault Monitoring

    Figure 3.10. LOL Set and Clear Thresholds Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 31 The settings in the table above are handled by ClockBuilder Pro. Manual settings should be avoided. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 32: Interrupt Pin (Intr)

    (after inverting the _MSK bit values). If the result is a logic one, then the _FLG bit will cause an interrupt. For example, if LOS_FLG[0] Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 33 LOS_FLG[0] and the interrupt cannot be cleared. Note that the INTR pin may toggle during reset. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 34: Output Clocks

    The following table is used to set up the routing from the N divider frequency selection to the output. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 35: Output R Divider Synchronization

    Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 36: Performance Guidelines For Outputs

    Use of integer-related output frequencies reduces the opportunity for crosstalk. However, the phase noise of the Si5386 is so low that crosstalk may still be detected in certain cases. Crosstalk occurs at both the device level, as well as the PCB level.
  • Page 37: Optimizing Output Phase Noise

    4.2.1 Optimizing Output Phase Noise To obtain the best phase noise performance for RF and other demanding applications, it is important to configure the Si5386 device optimally. Using integer dividers for P, M, and N will provide the highest level of performance. Integer mode dividers are optimized to support LTE, JESD204b and other integer-ratio derived frequencies.
  • Page 38: Output Driver Supply Select

    OUT9A_VDD_SEL_EN 0x013D[3] OUT9A_VDD_SEL 0x013D[5:4] Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 39: Differential Outputs

    Figure 4.2. Si5386 Supported Differential Output Terminations Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 40: Differential Output Amplitude Controls

    0x0137[6:4] OUT9A_ AMPL 0x013C[6:4] Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 41: Differential Output Common Mode Voltage Selection

    0x0137[3:0] OUT9A_ CM 0x013C[3:0] Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 42: Recommended Settings For Differential Lvpecl, Lvds, Hcsl, And Cml

    Differential Amplitude Controls for additional information. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 43: Lvcmos Outputs

    Figure 4.3. LVCMOS Output Terminations Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 44: Lvcmos Output Impedance And Drive Strength Selection

    VDDO pin to properly determine the correct output voltage. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 45: Lvcmos Output Polarity

    0x03 CLKb Inverted Complementary Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 46: Output Enable/Disable

    OUT9_OE 0x0135[1] OUT9A_OE 0x013A[1] Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 47: Output Driver State When Disabled

    0x0136[5:4] OUT9A_ DIS_STATE 0x013B[5:4] Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 48: Synchronous Output Enable/Disable Feature

    (LOL). This option can be useful to force a downstream PLL into Holdover. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 49: Automatic Output Disable During Losxaxb

    1: All outputs remain enabled during LOS- XAXB Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 50: Output Driver Disable Source Summary

    Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 51: Static Output Skew Control

    4.8 Static Output Skew Control The Si5386 uses independently adjustable output N dividers (N0 - N4) to generate up to 5 unique frequencies to its 12 outputs through the output crosspoint switch. By default all output clocks are aligned. Each N divider has an independently adjustable delay path (Δt0 –...
  • Page 52 N4_IODELAY_DEC_EN 0x0A5F[1] N4_IODELAY_INC_EN 0x0A5F[0] Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 53: Dynamic Output Skew Control

    N4_PHASE_DEC 0x0A4B[1] N4_PHASE_INC 0x0A4B[0] Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 54: Zero Delay Mode

    This helps to cancel out internal delay introduced by the dividers, the crosspoint, the input, and the output drivers. The OUT9A output and FB_IN input should be used for the external feedback connection in the Si5386 to minimize the overall distance and delay.
  • Page 55 IN_SEL[1:0] Pins (ZDM) ZDM_IN_SEL Register (ZDM) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 56: Serial Interface

    I C or SPI operation. The Si5386 supports communication with a 3.3 V or 1.8 V host by setting the IO_VDD_SEL (0x0943[0]) configuration bit. The SPI interface supports both 4-wire or 3-wire modes by setting the SPI_3WIRE (0x002B[3]) configuration bit. See the figure below for supported modes of operation and settings.
  • Page 57 C Interface more information. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 58: I 2 C Interface

    C Configuration The 7-bit I C slave device address of the Si5386 consists of a 5-bit fixed address plus two bit determined by the voltages on the A1 and A0 input pins, as shown in the figure below. Slave Address Figure 6.3.
  • Page 59 Figure 6.5. I C Read Operation Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 60: Spi Interface

    Note that there is no burst read, only read increment. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 61 The timing diagrams for the SPI commands are shown in the following figures. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 62 Figure 6.9. SPI "Set Address" Command Timing Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 63 Figure 6.10. SPI "Write Data" and "Write Data + Address Increment" Instruction Timing Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 64 Figure 6.12. SPI "Burst Data Write" Instruction Timing Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 65: Field Programming

    Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 66: Xaxb External References

    8. XAXB External References 8.1 Performance of External References An external crystal oscillator (XO) is required to set the reference for the Si5386. A 54 MHz XO must be used as the reference to the wireless jitter attenuator. See the...
  • Page 67: Xo And Device Circuit Layout Recommendations

    • Layer 8: ground layer External XO: The figure below shows the top layer layout of the Si5386 device mounted on the PCB. The XO is outlined with the white box around it. The top layer is flooded with ground. Both the XA and XB pins are capacitively coupled, with XB ac connected to XO ground for single-ended output XO's.
  • Page 68 Figure 9.2. External XO: Input Clocks and Ground Fill, Below the Top Layer (Layer 2) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 69 Figure 9.4. External XO: Internal Power Plane (Layer 4) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 70 Figure 9.6. External XO: Internal Ground Plane (Layer 6) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 71 Figure 9.7. External XO: Output Clocks (Layer 7) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 72 Figure 9.8. External XO: Bottom Layer Ground Flooded (Layer 8) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 73: Power Management

    Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 74: Power Supply Sequencing

    Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 75: Base Vs. Factory Preprogrammed Devices

    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.
  • Page 76: Register Map

    Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 77 XAXB reference clock. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 78 3.3 Fault Monitoring for more information. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 79 These are interrupt mask bits corresponding to the bits in register 0x0011. For more information see Section 3.3 Fault Monitoring. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 80 DSPLL bandwidth registers as well as the P, M, N, and R dividers. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 81 C bus operation, when I2C_SEL is high. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 82 ClockBuilder Pro calculates the correct LOS register clear threshold value for IN0, given a particular frequency plan. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 83 4: XAXB reference clock (default) 5-7: Reserved Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 84 0. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 85 0x0059 FAST_OOF2_DETWIN_SEL 0x0059 FAST_OOF3_DETWIN_SEL Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 86 1: Enable Fast LOL (default) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 87 See the list below for settings. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 88 The LOL Clear Delay value is set by ClockBuilder Pro based on each frequency plan. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 89 FASTLOCK_EXTEND 0x00ED 28:24 FASTLOCK_EXTEND Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 90 DEVICE_READY. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 91: Registers

    0x0247-0x0249, for more information. Setting OUTx_DIV2_BYP = 1, the output clock duty cycle will be set by the N output divider value. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 92 OUT0A_FOR- MAT=1 or 2. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 93 OUTx_DIS_SRC and OUTx_MUX_SEL are different when selecting the same DSPLL. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 94 OUT4 Differential Amplitude and 0x0105 Common Mode Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 95 OUT9 Differential Amplitude and 0x0105 Common Mode Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 96 4.7.5 Output Driver Disable Source Summary for more information. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 97 1: Powerdown all output drivers Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 98: Registers

    P input dividers can be changed at the same time. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 99 1: Fractional (or Integer) division. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 100 The R0-R9A dividers follow the same format as the R0A divider description above. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 101 DESIGN_ID6: 0x00 DESIGN_ID7: 0x00 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 102 Values set by CBPro. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 103 0x02B7 LOL_NOSIG_TIME rameter selected. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 104: Registers

    N4_NUM 44-bit Integer 0x0302-0x0307 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 105 N2_DELAY behaves in the same manner as N0_DELAY. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 106: Registers

    IN_SEL bits will be ignored. Note that in ZDM, the DSPLL does not use either Hitless switching or Automatic input source switching. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 107: Registers

    BWx_PLL, FASTLOCK_BWx_PLL, and HOLDEXIT_BWx parameters to take effect. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 108 Setting this self-clearing bit high latches the new M feedback divider register values into operation. A Soft Reset will have the same effect. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 109 Fastlock behavior. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 110 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 111 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 112 Value calculated in CBPro. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 113 Value calculated in CBPro. 0x058A 12:8 PFD_EN_DLY Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 114 Value set by CBPro. HIST Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 115 Set by CBPro. TLE_DET_EN Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 116 Set by CBPro. 0x05B2 15:0 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 117: Registers

    Value calculated in CBPro. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 118 CMOS input clocks Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 119: Page A Registers

    N0_LOAD_AUTO_DIS Set by CBPro Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 120 N4_LOAD_AUTO_DIS Set by CBPro Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 121 The following tables for N2 dynamic phase adjust work the same as N0 dynamic phase adjust. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 122 N4 step size from 1 to 255 in units of Tvco, the VCO period. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 123 Writing a 1 initiates a phase decrement. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 124: Page B Registers

    N1_IODelay_COUNT Upper Byte of IO DELAY COUNT Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 125 N3_IODelay_COUNT Upper Byte of IO DELAY COUNT Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 126 2.1.1 Updating Registers During Device Operation for more information. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 127 OOF for the XAXB reference clock. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 128 Value calculated in CBPro. 0x0B58 VCO_RESET_CALCODE Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 129: Page C Registers

    IN_CLK_VAL_TIME Set by CBPro. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 130: Appendix-Custom Differential Amplitude Controls

    Low-Power Normal Low-Power Normal Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 131 MAT_OUTx_AMPL, and OUTx_CM controls. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 132: Revision History

    September, 2017 • Initial release. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com Rev. 1.2 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 9, 2021...
  • Page 133 Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by Skyworks as a service to its customers and may be used for informational purposes only by the customer.

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