SI5341_16 datasheet(51/53 Pages) SILABS

51 / 53 page

Table of Contents

1. Features List ............................... 1

2. Ordering Guide

.............................. 2

3. Functional Description............................ 4

3.1 Power-up and Initialization

......................... 4

3.2 Frequency Configuration .......................... 4

3.3 Inputs

................................ 4

3.3.1 XA/XB Clock and Crystal Input

....................... 5

3.3.2 Input Clocks (IN0, IN1, IN2)

........................ 6

3.3.3 Input Selection (IN0, IN1, IN2, XA/XB) ..................... 7

3.4 Fault Monitoring ............................. 7

3.4.1 Status Indicators ............................ 7

3.4.2 Interrupt Pin (INTRb) ........................... 7

3.5 Outputs ................................ 8

3.5.1 Output Signal Format........................... 8

3.5.2 Differential Output Terminations ....................... 8

3.5.3 Programmable Common Mode Voltage for Differential Outputs............. 8

3.5.4 LVCMOS Output Terminations

....................... 9

3.5.5 LVCMOS Output Impedance and Drive Strength Selection .............. 9

3.5.6 LVCMOS Output Signal Swing

....................... 9

3.5.7 LVCMOS Output Polarity ......................... 9

3.5.8 Output Enable/Disable .......................... 9

3.5.9 Output Driver State When Disabled ...................... 9

3.5.10 Synchronous/Asynchronous Output Disable Feature ................10

3.5.11 Output Delay Control (t0-t4) ........................10

3.5.12 Zero Delay Mode............................11

3.5.13 Sync Pin (Synchronizing R Dividers) .....................11

3.5.14 Output Crosspoint ...........................11

3.5.15 Digitally Controlled Oscillator (DCO) Modes ...................12

3.5.15.1 DCO with Frequency Increment/Decrement Pins/Bits ...............12

3.5.15.2 DCO with Direct Register Writes ......................12

3.6 Power Management ............................12

3.7 In-Circuit Programming ...........................12

3.8 Serial Interface

.............................12

3.9 Custom Factory Preprogrammed Devices ....................12

3.10 Enabling Features and/or Configuration Settings Not Available in ClockBuilder Pro for Factory Pre-

Programmed Devices

...........................

4. Register Map ..............................

4.1 Addressing Scheme ............................15

4.2 High-Level Register Map ..........................16

5. Electrical Specifications ..........................

6. Typical Application Schematic ........................

Table of Contents

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