TAS3204 datasheet(13/72 Pages) TI

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0x00

DWFMT (Data Word Format)

Ack

IOM

Ack

OW[2:0]

IW[2:0]

14 13

11 10

DWFMT

Ack

xxxxxxxx

Ack

Subaddr

Ack

Slave Addr

OM[3:0]

IM[3:0]

xxxxxxxx

Ack

Output Port

Format

Input Port

Format

Input Port

Word Size

Output Port

Word Size

R0003-01

TAS3204

AUDIO DSP

WITH ANALOG INTERFACE

SLES197 – APRIL 2007

Figure 3-1. Serial Data Controls

Table 3-3. Serial Data Input and Output Data Word Sizes

IW1, OW1

IW0, OW0

FORMAT

Reserved

16-bit data

20-bit data

24-bit data

Following a reset, ensure that the clock register (0x00) is written before performing volume, treble, or bass

updates.

Commands to reconfigure the SAP can be accompanied by mute and unmute commands for quiet

operation. However, care must be taken to ensure that the mute command has completed before the SAP

is commanded to reconfigure. Similarly, the TAS3204 should not be commanded to unmute until after the

SAP has completed a reconfiguration. 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 not to be completed properly.

When the TAS3204 is transmitting serial data, it uses the negative edge of SCLK to output a new data bit.

The TAS3204 samples incoming serial data on the rising edge of SCLK.

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