AD9558BCPZ datasheet(2/105 Pages) AD

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AD9558

Data Sheet

Rev. C | Page 2 of 105

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications....................................................................................... 1

General Description ......................................................................... 1

Functional Block Diagram .............................................................. 1

Revision History ............................................................................... 3

Specifications..................................................................................... 5

Supply Voltage............................................................................... 5

Supply Current.............................................................................. 5

Power Dissipation......................................................................... 6

Logic Inputs (SYNC, RESET, PINCONTROL, M7 to M0).......6

Logic Outputs (M7 to M0, IRQ) ................................................ 7

System Clock Inputs (XOA, XOB) ............................................. 7

Reference Inputs ........................................................................... 8

Reference Monitors ...................................................................... 9

Reference Switchover Specifications.......................................... 9

Distribution Clock Outputs ...................................................... 10

Time Duration of Digital Functions ........................................ 11

Digital PLL .................................................................................. 12

Digital PLL Lock Detection ...................................................... 12

Holdover Specifications............................................................. 12

Serial Port Specifications—SPI Mode...................................... 13

Serial Port Specifications—I2C Mode...................................... 14

Jitter Generation ......................................................................... 14

Absolute Maximum Ratings.......................................................... 17

ESD Caution................................................................................ 17

Pin Configuration and Function Descriptions........................... 18

Typical Performance Characteristics ........................................... 21

Input/Output Termination Recommendations.......................... 26

Getting Started ................................................................................ 27

Chip Power Monitor and Startup............................................. 27

Multifunction Pins at Reset/Power-Up ................................... 27

Device Register Programming Using a Register Setup File .....27

Theory of Operation ...................................................................... 31

Overview...................................................................................... 31

Reference Clock Inputs.............................................................. 32

Reference Monitors .................................................................... 32

Reference Profiles ....................................................................... 32

Reference Switchover ................................................................. 32

Digital PLL (DPLL) Core .......................................................... 33

Loop Control State Machine..................................................... 36

System Clock (SYSCLK)................................................................ 37

System Clock Inputs................................................................... 37

System Clock Multiplier............................................................ 37

Output PLL (APLL) ....................................................................... 39

Clock Distribution.......................................................................... 40

RF Dividers (RF Divider 2 and RF Divider 1)........................ 40

Channel Dividers........................................................................ 40

Output Power-Down ................................................................. 40

Output Enable............................................................................. 40

Output Mode .............................................................................. 40

Clock Distribution Synchronization........................................ 41

Frame Synchronization.................................................................. 42

Reference Configuration in Frame Synchronization Mode.... 42

Clock Outputs in Frame Synchronization Mode................... 42

Control Registers for Frame Synchronization Mode............. 42

Level Sensitive Mode and One-Shot Mode............................. 42

M3b Divider/OUT5 Programming in Frame Synchronization

Mode ............................................................................................ 43

Status and Control.......................................................................... 44

Multifunction Pins (M7 to M0) ............................................... 44

Watchdog Timer......................................................................... 45

EEPROM ..................................................................................... 45

Serial Control Port ......................................................................... 51

SPI/I²C Port Selection................................................................ 51

SPI Serial Port Operation.......................................................... 51

I²C Serial Port Operation.......................................................... 55

Programming the I/O Registers ................................................... 58

Buffered/Active Registers.......................................................... 58

Autoclear Registers..................................................................... 58

Thermal Performance.................................................................... 59

Power Supply Partitions................................................................. 60

Recommended Configuration for 3.3 V Switching Supply..... 60

Configuration for 1.8 V Supply ................................................ 60

Pin Program Function Description ............................................. 61

Overview of On-Chip ROM Features ..................................... 61

Hard Pin Programming Mode.................................................. 62

Soft Pin Programming Overview............................................. 63

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