ADP5588ACPZ-R7 datasheet(14/28 Pages) AD

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ADP5588

Rev. A | Page 14 of 28

I2C PROGRAMMING AND DIGITAL CONTROL

The ADP5588 provides full software programmability to

facilitate its adoption in various product architectures. All

(01101001) for a read and Address 0x68 (01101000) for a write.

All communication to the ADP5588 is done via its I2C-compatible

serial interface. Figure 14 shows a typical write sequence for

programming an internal register. The cycle begins with a start

condition followed by the chip write address (0x68). The

ADP5588 acknowledges the chip write address byte by pulling

the data line low. The address of the register to which data is to

be written is sent next. The ADP5588 acknowledges the register

address byte by pulling the data line low. The data byte to be

written is sent next. The ADP5588 acknowledges the data byte

by pulling the data line low. A stop condition completes the

sequence.

Figure 15 shows a typical read sequence for reading back an

internal register. The cycle begins with a start condition

followed by the chip write address (0x68). The ADP5588

acknowledges the chip write address byte by pulling the data

line low. The address of the register from which data is to be

read is sent next. The ADP5588 acknowledges the register

address byte by pulling the data line low. The cycle continues

with a repeat start followed by the chip read address (0x69). The

ADP5588 acknowledges the chip read address byte by pulling

the data line low. The ADP5588 places the contents of the

previously addressed register on the bus for readback. There is

no acknowledge following the readback data byte, and the cycle

is completed with a stop condition.

0 = WRITE

SUBADDRESS

CHIP ADDRESS

ADP5588 RECEIVES DATA

Figure 14. I2C Write Sequence

1 = READ

SUBADDRESS

CHIP ADDRESS

110

0000011

ADP5588 SENDS DATA

0 = WRITE

Figure 15. I2C Read and Write Sequences

READ START ADDR

CHIP ADDRESS

ST 0

110

0000001

ST 0110

1 = READ

ADP5588 SENDS DATA 1

0 = WRITE

...

ADP5588 SENDS DATA N

Figure 16. I2C Read Autoincrement

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