Datasheet AD5232 (Analog Devices) - 6

AD5232 Data Sheet Timing Diagrams CPHA = 1 CS t12 t t 3 13 t t 1 2 CLK t CPOL = 1 5 B15 B0 t17 t4 t7 t6 HIGH HIGH OR LOW B15 B0 OR LOW SDI (MSB) (LSB) t t 8 t 11 t9 10 B15 B0 SDO B16* (MSB) (LSB) t14 t15 t16 RDY
2
NOTES
00 8-
1. B24 IS AN EXTRA BIT THAT IS NOT DEFINED, BUT IT IS USUALLY THE LSB OF THE CHARACTER THAT WAS PREVIOUSLY TRANSMITTED.
61
2. THE CPOL = 1 MICROCONTROLLER COMMAND ALIGNS THE INCOMING DATA TO THE POSITIVE EDGE OF THE CLOCK.
02 Figure 2. CPHA = 1
CPHA = 0 CS t12 B15 B0 t (MSB) 1 (LSB) t t 3 13 t2 t5 B15 B0 t17 CLK CPOL = 0 t4 t7 t6 HIGH HIGH OR LOW B15 B0 OR LOW SDI (MSB IN) (LSB) t8 t10 t11 t9 B15 B0 SDO (MSB OUT) (LSB) * t14 t15 t16 RDY NOTES
03 0 8-
1. THIS EXTRA BIT IS NOT DEFINED, BUT IT IS USUALLY THE MSB OF THE CHARACTER THAT WAS JUST RECEIVED.
61
2. THE CPOL = 0 MICROCONTROLLER COMMAND ALIGNS THE INCOMING DATA TO THE POSITIVE EDGE OF THE CLOCK.
02 Figure 3. CPHA = 0 Rev. C | Page 6 of 24 Document Outline Features Applications Functional Block Diagram General Description Revision History Specifications Electrical Characteristics—10 kΩ, 50 kΩ, 100 kΩ Versions Interface Timing Characteristics Timing Diagrams Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Test Circuits Theory of Operation Scratch Pad and EEMEM Programming Basic Operation EEMEM Protection Digital Input/Output Configuration Serial Data Interface Daisy-Chaining Operation Advanced Control Modes Increment and Decrement Commands Logarithmic Taper Mode Adjustment Using Additional Internal, Nonvolatile EEMEM Terminal Voltage Operating Range Detailed Potentiometer Operation Programming the Variable Resistor Rheostat Operation Programming the Potentiometer Divider Voltage Output Operation Operation from Dual Supplies Application Programming Examples Equipment Customer Start-up Sequence for a PCB Calibrated Unit with Protected Settings Flash/EEMEM Reliability Evaluation Board Outline Dimensions Ordering Guide