AD9882SLASHPCB datasheet(32/36 Pages) AD

32 / 36 page

REV. A

–32–

AD9882

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

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

SDA

SCL

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

ACK

Figure 17. Serial Interface, Typical Byte Transfer

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