DS20006554A datasheet(2/94 Pages) MICROCHIP

2 / 94 page

ZL30260-ZL30263

Data Sheet

DS20006554A

Table of Contents

APPLICATION EXAMPLE ...............................................................................................................5

DETAILED FEATURES ...................................................................................................................5

2.1

INPUT CLOCK FEATURES .................................................................................................................5

2.2

APLL FEATURES .............................................................................................................................5

2.3

OUTPUT CLOCK FEATURES..............................................................................................................5

2.4

GENERAL FEATURES .......................................................................................................................5

2.5

EVALUATION SOFTWARE..................................................................................................................6

PIN DIAGRAM..................................................................................................................................6

PIN DESCRIPTIONS ........................................................................................................................7

FUNCTIONAL DESCRIPTION .........................................................................................................9

5.1

DEVICE IDENTIFICATION...................................................................................................................9

5.2

PIN-CONTROLLED AUTOMATIC CONFIGURATION AT RESET ...............................................................9

5.2.1

ZL30260 and ZL30262

—Internal ROM, External or No EEPROM...................................................... 10

5.2.2

ZL30261 and ZL30263

—Internal EEPROM ........................................................................................ 10

5.3

LOCAL OSCILLATOR OR CRYSTAL ..................................................................................................11

5.3.1

External Oscillator ................................................................................................................................ 11

5.3.2

External Crystal and On-Chip Driver Circuit ........................................................................................ 11

5.3.3

Clock Doublers..................................................................................................................................... 12

5.3.4

Ring Oscillator (for Auto-Configuration) ............................................................................................... 12

5.4

INPUT SIGNAL FORMAT CONFIGURATION ........................................................................................13

5.5

APLL CONFIGURATION..................................................................................................................13

5.5.1

APLL Input Frequency ......................................................................................................................... 13

5.5.2

APLL Input Monitors............................................................................................................................. 13

5.5.3

APLL Input Selection............................................................................................................................ 13

5.5.4

APLL Output Frequency....................................................................................................................... 14

5.5.5

Fractional Output Divider ..................................................................................................................... 15

5.5.6

Numerically Controlled Oscillator (NCO) Mode ................................................................................... 16

5.5.6.1

Using the APLL’s Feedback Divider ................................................................................................ 16

5.5.6.2

Using the Fractional Output Divider................................................................................................. 16

5.5.7

Frequency Increment and Decrement ................................................................................................. 17

5.5.8

Spread-Spectrum Modulation Mode .................................................................................................... 17

5.5.8.1

Using the APLL’s Feedback Divider ................................................................................................ 17

5.5.8.2

Using the Fractional Output Divider................................................................................................. 18

5.5.9

APLL Phase Adjustment ...................................................................................................................... 19

5.6

OUTPUT CLOCK CONFIGURATION...................................................................................................19

5.6.1

Output Enable, Signal Format, Voltage and Interfacing ...................................................................... 19

5.6.2

Output Frequency Configuration.......................................................................................................... 20

5.6.3

Output Duty Cycle Adjustment ............................................................................................................. 20

5.6.4

Output Phase Adjustment .................................................................................................................... 21

5.6.5

Output-to-Output Phase Alignment...................................................................................................... 21

5.6.6

Output-to-Input Phase Alignment......................................................................................................... 21

5.6.7

Output Clock Start and Stop ................................................................................................................ 21

5.7

MICROPROCESSOR INTERFACE......................................................................................................22

5.7.1

SPI Slave ............................................................................................................................................. 22

5.7.2

SPI Master (ZL30260 and ZL30262 Only) ........................................................................................... 24

5.7.3

I2C Slave .............................................................................................................................................. 24

5.8

INTERRUPT LOGIC .........................................................................................................................27

5.9

RESET LOGIC ................................................................................................................................28

5.9.1

Design Considerations for Using an External RC Reset Circuit .......................................................... 28

5.10

POWER-SUPPLY CONSIDERATIONS.............................................................................................28

5.11

AUTO-CONFIGURATION FROM EEPROM OR ROM ......................................................................28

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