AD9957SLASHPCBZ datasheet(3/61 Pages) AD

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Data Sheet

AD9957

Rev. F | Page 3 of 61

Sync Generator ............................................................................41

Sync Receiver ...............................................................................41

Setup/Hold Validation ................................................................42

Synchronization Example ..........................................................44

I/Q Path Latency .........................................................................45

Example ....................................................................................45

Power Supply Partitioning .............................................................46

3.3 V Supplies ..............................................................................46

DVDD_I/O (Pin 11, Pin 15, Pin 21, Pin 28, Pin 45, Pin 56,

Pin 66) ......................................................................................46

AVDD (Pin 74 to Pin 77 and Pin 83) ...................................46

1.8 V Supplies ..............................................................................46

DVDD (Pin 17, Pin 23, Pin 30, Pin 47, Pin 57, Pin 64) .....46

AVDD (Pin 3)..........................................................................46

AVDD (Pin 6) ..........................................................................46

AVDD (Pin 89 and Pin 92) ....................................................46

Serial Programming ........................................................................47

Control Interface—Serial I/O....................................................47

General Serial I/O Operation ....................................................47

Instruction Byte...........................................................................47

Instruction Byte Information Bit Map .................................47

Serial I/O Port Pin Descriptions ...............................................47

SCLK—Serial Clock................................................................47

CS—Chip Select Bar ...............................................................47

SDIO—Serial Data Input/Output .........................................47

SDO—Serial Data Out ...........................................................48

I/O_RESET—Input/Output Reset ........................................48

I/O_UPDATE—Input/Output Update ................................48

Serial I/O Timing Diagrams ......................................................48

MSB/LSB Transfers .....................................................................48

I/O_UPDATE, SYNC_CLK, and System Clock Relationships

.......................................................................................................49

Control Function Register 1 (CFR1)....................................55

Control Function Register 2 (CFR2)....................................56

Control Function Register 3 (CFR3)....................................58

Auxiliary DAC Control Register...........................................58

I/O Update Rate Register.......................................................58

RAM Segment Register 0.......................................................58

RAM Segment Register 1.......................................................59

Amplitude Scale Factor (ASF) Register ...............................59

Multichip Sync Register .........................................................59

Profile Registers...........................................................................60

Profile[7:0] Register—Single Tone .......................................60

Profile[7:0] Register—QDUC ...............................................60

RAM Register ..........................................................................60

GPIO Configuration Register ...............................................60

GPIO Data Register ................................................................60

Outline Dimensions........................................................................61

Ordering Guide ...........................................................................61

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