RT5508WSC datasheet(11/57 Pages) RICHTEK

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RT5508

is a registered trademark of Richtek Technology Corporation

DS5508-01

March

2017

www.richtek.com

2C Interface

Device Addressing

RT5508 Support I2C Control interface. The default

device address is accessed via Pin ADS1 and ADS2.

(see Table 1.) Four separate address are supported for

stereo mode application. The levels on pins ADS1 and

ADS2 determine the values of bits 1 and 2, respectively.

The generic address is independent of pins ADS1 and

ADS2.

Table 1. Address Selection Via Pins ADS1 and ADS2

ADS2 Pin (V)

ADS1 Pin (V)

Address

Function (bit 0)

0110100x

0: write 1:read

DVDD

0110101x

0: write 1:read

DVDD

0110110x

0: write 1:read

DVDD

0110111x

0: write 1:read

Read Function

Reading One Indexed Byte of Data from RT (With 1-Byte)

Slave Address

Data Byte

R/W

1Byte

Acknowledge from RT

Acknowledge from Master

Slave Address

R/W

Acknowledge from RT

Repeated Start

Reading n Indexed Words of Data from RT (With N-Byte)

Slave Address

Data Byte

R/W

nth Byte

Acknowledge from RT

Acknowledge from Master

Slave Address

R/W

Acknowledge from RT

Repeated Start

Data Byte

1st Byte

Acknowledge from Master

…

2nd Byte

(n-1)th Byte

Write Function

Writing One Byte of Data to RT (With 1-Byte)

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