AD9557BCPZ 查看數據表（PDF） - Analog Devices

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AD9557BCPZ

Dual Input Multiservice Line Card Adaptive Clock Translator

Analog Devices 

AD9557

Data Sheet

TABLE OF CONTENTS

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

Loop Control State Machine..................................................... 34

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

System Clock (SYSCLK) ................................................................ 35

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

System Clock Inputs................................................................... 35

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

SYStem Clock Multiplier ........................................................... 35

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

Output PLL (APLL) ....................................................................... 37

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

Clock Distribution.......................................................................... 38

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

Output Power-Down ................................................................. 38

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

Output Enable............................................................................. 38

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

Output Mode .............................................................................. 38

Logic Inputs (RESET, SYNC, PINCONTROL, M3 to M0) .... 6

Clock Distribution Synchronization........................................ 38

Logic Outputs (M3 to M0, IRQ) ................................................ 7

Status and Control.......................................................................... 40

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

Multifunction Pins (M3 to M0) ............................................... 40

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

IRQ Pin ........................................................................................ 40

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

Watchdog Timer......................................................................... 41

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

EEPROM ..................................................................................... 41

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

Serial Control Port ......................................................................... 47

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

SPI/I²C Port Selection................................................................ 47

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

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

SPI Serial Port Operation .......................................................... 47

I2C Serial Port Operation .......................................................... 51

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

Programming the I/O Registers ................................................... 54

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

Buffered/Active Registers.......................................................... 54

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

Autoclear Registers..................................................................... 54

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

Register Access Restrictions...................................................... 54

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

Thermal Performance .................................................................... 55

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

Power Supply Partitions................................................................. 56

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

Recommended Configuration for 3.3 V Switching Supply ..... 56

Typical Performance Characteristics ........................................... 20

Configuration for 1.8 V Supply ................................................ 56

Input/Output Termination Recommendations .......................... 25

Pin Program Function Description ............................................. 57

Getting Started ................................................................................ 26

Overview of On-Chip ROM Features ..................................... 57

Chip Power Monitor and Startup............................................. 26

Hard Pin Programming Mode.................................................. 58

Multifunction Pins at Reset/Power-Up ................................... 26

Soft Pin Programming Mode Overview ................................. 58

Device Register Programming Using a Register Setup File .....26

Register Map ................................................................................... 59

Register Programming Overview............................................. 27

Register Map Bit Descriptions ...................................................... 68

Theory of Operation ...................................................................... 30

Overview...................................................................................... 30

Reference Clock Inputs.............................................................. 31

Reference Monitors .................................................................... 31

Reference Profiles ....................................................................... 31

Reference Switchover ................................................................. 31

Digital PLL (DPLL) Core .......................................................... 32

Serial Port Configuration (Register 0x0000 to

Register 0x0005) ......................................................................... 68

Silicon Revision (Register 0x000A) ......................................... 68

Clock Part Serial ID (Register 0x000C to

Register 0x000D) ........................................................................ 68

System Clock (Register 0x0100 to Register 0x0108) ............. 69

General Configuration (Register 0x0200 to

Register 0x0214) ......................................................................... 70

Rev. C | Page 2 of 95

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