AD9957SLASHPCBZ datasheet(4/62 Pages) AD

4 / 62 page

Data Sheet

AD9957

Rev. E | Page 3 of 61

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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