0

Bit 7

MSB

1

Bit 6

1

Bit 5

1

Bit 4

0

Bit 3

0

Bit 2

0

Bit 1

R/W

Bit 0

LSB

Serial Bus Slave Address (chip address)

LM3537

SNVS634B – JUNE 2011 – REVISED MAY 2013

www.ti.com

Figure 8. Chip Address

TRANSFERRING DATA

Every byte on the SDA line must be eight bits long, with the most significant bit (MSB) transferred first. Each byte

of data must be followed by an acknowledge bit (ACK). The acknowledge related clock pulse (9th clock pulse) is

generated by the master. The master releases SDA (HIGH) during the 9th clock pulse. The LM3537 pulls down

SDA during the 9th clock pulse, signifying an acknowledge. An acknowledge is generated after each byte has

been received. Figure 9 is an example of a write sequence to the DIODE ENABLE register of the LM3537.

Figure 9. Write Sequence to the LM3537

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