Analog Devices AD9380 Manual page 54

AD9380
SERIAL INTERFACE READ/WRITE EXAMPLES
Write to one control register:
•
Start signal
•
Slave address byte (R/ W bit = low)
•
Base address byte
•
Data byte to base address
•
Stop signal
Write to four consecutive control registers:
•
Start signal
•
Slave address byte (R/ W bit = low)
•
Base address byte
•
Data byte to base address
•
Data byte to (base address + 1)
•
Data byte to (base address + 2)
•
Data byte to (base address + 3)
•
Stop signal
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SDA BIT 6 BIT 5
BIT 7
SCL
Figure 18. Serial Interface—Typical Byte Transfer
Read from one control register:
•
Start signal
•
Slave address byte (R/ W \ bit = low)
•
Base address byte
•
Start signal
•
Slave address byte (R/W\ bit = high)
•
Data byte from base address
•
Stop signal
Read from four consecutive control registers:
•
Start signal
•
Slave address byte (R/ W bit = low)
•
Base address byte
•
Start signal
•
Slave address byte (R/ W bit = high)
•
Data byte from base address
•
Data byte from (base address + 1)
•
Data byte from (base address + 2)
•
Data byte from (base address + 3)
•
Stop signal
BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
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