TAS3103DBT datasheet(36/146 Pages) TI

36 / 146 page

2−4

A 16-bit field contained in the 32-bit word located at I2C subaddress 0xF9 configures both the input and output serial

audio ports. Figure 2−4 illustrates the format of this 16-bit field. The data is shown in the transmitted I2C protocol

format, and thus, in addition to the data, the start bit S, the slave address, the subaddress, and the acknowledges

required by every byte are also shown.

0xF9

DWFMT (Data Word Format)

Ack

IOM

Ack

OW[2:0]

IW[2:0]

11 10

DWFMT

Ack

xxxxxxxx

Ack

Sub-Addr

Ack

Slave Addr

OM[3:0]

IM[3:0]

xxxxxxxx

Ack

Output

Port

Format

Input

Port

Format

Output Port

TDM Alignment

Input Port

Word

Size

Output Port

Word

Size

Figure 2−4. SAP Configuration Subaddress Fields

Commands to reconfigure the SAP cannot be issued as standalone commands, but must accompany mute and

unmute commands. The reason for this is that an SAP configuration change while a volume or bass or treble update

is taking place can cause the update to not properly be completed. Figure 2−5 shows the recommended procedure

for issuing SAP configuration update commands.

After a reset, ensure that 0xF9 is written before volume, treble, or bass.

TAS3103DBT 데이터시트(PDF) 36 Page - Texas Instruments

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