DAC63202 datasheet(49/83 Pages) TI

49 / 83 page

7.5.2.2.1 Address Byte

Table 7-15 depicts the address byte, the first byte received from the controller device following the start

condition. The first four bits (MSBs) of the address are factory preset to 1001. The next three bits of the address

are controlled by the A0 pin. The A0 pin input can be connected to VDD, AGND, SCL, or SDA. The A0 pin is

sampled during the first byte of each data frame to determine the address. The device latches the value of the

address pin, and consequently responds to that particular address according to Table 7-16.

Table 7-15. Address Byte

COMMENT

MSB

LSB

—

AD6

AD5

AD4

AD3

AD2

AD1

AD0

R/W

General address

See Table 7-16

(target address column)

0 or 1

Broadcast address

Table 7-16. Address Format

TARGET ADDRESS

A0 PIN

000

AGND

001

VDD

010

SDA

011

SCL

The DACx3202 supports broadcast addressing, which is used for synchronously updating or powering down

multiple DACx3202 devices. When the broadcast address is used, the DACx3202 responds regardless of the

address pin state. Broadcast is supported only in write mode.

7.5.2.2.2 Command Byte

Table 7-21 lists the command byte in the ADDRESS column.

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DAC53202, DAC63202

SLASF47 – MAY 2022

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