TAS3108DCPR datasheet(29/63 Pages) TI1

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Start

(By Master)

TAS3108/

TAS3108IA

Address

Acknowledge

(By TAS3108/

TAS3108IA)

7-Bit Slave

Address

(By Master)

Write

(By Master)

ACK

Subaddress

TAS3108/

TAS3108IA

Subaddress

(By Master)

Acknowledge

(By TAS3108/

TAS3108IA)

ACK

Stop

(By Master)

Start

(By Master)

TAS3108/

TAS3108IA

Address

Acknowledge

(By TAS3108/

TAS3108IA)

7-Bit Slave

Address

(By Master)

Read

(By Master)

ACK

Data

(By TAS3108/

TAS3108IA)

ACK

Data

(By TAS3108/

TAS3108IA)

Acknowledge

(By Master)

ACK

Acknowledge

(By Master)

Stop

(By Master)

NAK

No Acknowledge

(By Master)

Start

(By Master)

TAS3108/

TAS3108IA

Address

Acknowledge

(By TAS3108/

TAS3108IA)

7-Bit Slave

Address

(By Master)

Write

(By Master)

ACK

Data

(By Master)

ACK

Data

(By Master)

ACK

Stop

(By Master)

ACK

Subaddress

TAS3108/

TAS3108IA

Subaddress

(By Master)

Acknowledge

(By TAS3108/

TAS3108IA)

ACK

Acknowledge

(By TAS3108/

TAS3108IA)

Acknowledge

(By TAS3108/

TAS3108IA)

Acknowledge

(By TAS3108/

TAS3108IA)

I2C Write Transaction

I2C Read Transaction

R0006−01

6.2 Detailed I

2C Operation

TAS3108, TAS3108IA

AUDIO DIGITAL SIGNAL PROCESSORS

SLES152B – OCTOBER 2005 – REVISED NOVEMBER 2007

Figure 6-2. I2C Subaddress Access Protocol

The I2C slave mode is the mode that is used to change configuration parameters during operation and to

perform program and coefficient downloads from a master device. The latter can be used to replace the

I2C master-mode EEPROM download. The TAS3108/TAS3108IA supports both random and sequential

I2C transactions. The TAS3108/TAS3108IA I2C slave address is 011010xy, where the first six bits are the

TAS3108/TAS3108IA device address and bit x is CS0, which is set by the TAS3108/TAS3108IA internal

microprocessor at power up. Bit y is the R/W bit. The pulldown resistance of CS0 creates a default 00

address when no connection is made to the pin. Table 6-1 and Table 6-2 show all the legal addresses for

I2C slave and master modes.

The TAS3108/TAS3108IA I2C block does respond to the broadcast address (00h).

Table 6-1. Slave Addresses

BASE ADDRESS

CS0

R/W

SLAVE ADDRESS

0110 10

0x68

0110 10

0x69

0110 10

0x6A

0110 10

0x6B

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