Silicon Laboratories Si5345 Manuals

Manuals and User Guides for Silicon Laboratories Si5345. We have 1 Silicon Laboratories Si5345 manual available for free PDF download: Family Reference Manual

Silicon Laboratories Si5345 Family Reference Manual

Silicon Laboratories Si5345 Family Reference Manual (222 pages)

ANY-FREQUENCY, ANY-OUTPUT JITTER-ATTENUATORS /CLOCK MULTIPLIERS REV. D

Brand: Silicon Laboratories | Category: Computer Hardware | Size: 3 MB

Table of Contents

Table of Contents
2
1 Scope

9
- Related Documents
  9
2 Overview

9
3 DSPLL and Multisynth

11
- Figure 2. Si5342 DSPLL and Multisynth System Flow Diagram
  11
  - Dividers
    12
  - DSPLL Loop Bandwidth
    12
    
    Table 2. PLL_BW Registers
    12
    
    Fastlock Feature
    13
    
    Holdover Exit Bandwidth
    13
    
    Table 3. Fastlock Registers
    13
    
    Table 4. DSPLL Holdover Exit Bandwidth Registers
    13
4 Modes of Operation

14
- Reset and Initialization
  14
- Figure 3. Modes of Operation
  14
- Figure 4. Si5345/44/42 Memory Configuration
  15
- Figure 5. Initialization from Hard Reset and Soft Reset
  15
- Table 5. Reset Registers
  15
- Dynamic PLL Changes
  16
  - Revision B and a
    16
  - Revision D
    16
- NVM Programming
  17
- Free Run Mode
  17
- Acquisition Mode
  17
- Locked Mode
  17
- Table 6. NVM Programming Registers
  17
- Holdover Mode
  18
- Figure 6. Programmable Holdover Window
  18
- Table 7. Holdover Mode Control Registers
  19
5 Clock Inputs

21
6 Output Clocks

33
7 Zero Delay Mode

47
8 Digitally-Controlled Oscillator (DCO) Mode

49
9 Serial Interface

52
- Figure 23. I2C/SPI Device Connectivity Configurations
  52
10 Field Programming

60
11 XAXB External References

61
12 Crystal and Device Circuit Layout Recommendations

68
- 64-Pin QFN Si5345 Layout Recommendations
  68
- 44-Pin QFN Si5344/42 Layout Recommendations
  73
13 Power Management

77
- Power Management Features
  77
- Table 44. Power-Down Registers
  77
- Power Supply Recommendations
  78
- Power Supply Sequencing
  78
- Grounding Vias
  78
14 Register Map

79
Appendix A-Setting the Differential Output Driver to

219
Non-Standard Amplitudes

219
- Table 62. Output Differential Common Mode Voltage Settings
  219
- Table 63. Typical Differential Amplitudes
  220
Document Change List

221

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