TAS5504 datasheet(18/96 Pages) TI

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Introduction

SLES123 − October 2004

TAS5504

Table 1−2. TAS5504 Audio Processing Feature Sets

FEATURE

32 − 96 kHz FOUR CHANNEL FEATURE SET

176.4 AND 192 kHz THREE CHANNEL

FEATURE SET

Signal processing channels

Pass through channels

N/A

Master volume

One for four channels

One for three channels

Individual channel volume

controls

Bass and treble tone controls

Two bass and treble tone controls with ±18-dB range,

programmable corner frequencies, and 2nd order slopes

L, R, and C (Ch 1, Ch 2, and Ch 3)

Sub (Ch 4)

Two bass and treble tone controls with

±18-dB range, programmable corner

frequencies, and 2nd order slopes

L and R (Ch 1 and Ch 2)

Sub (Ch 4)

Biquads

Dynamic range compressors

One for three satellites and one for sub

One for two satellites and one for sub

Input output mapping/mixing

Each of the four signal processing channels input can be

any ratio of the eight input channels.

Each of the four outputs can be any ratio of any two

processed channels.

Each of the three signal processing channels

or the one pass though channels inputs can

be any ratio of the eight input channels.

Each of the four outputs can be any ratio of

any of the three processed or one bypass

channels.

DC blocking filters

(implemented in the PWM

Section)

Four channels

Digital de-emphasis

(implemented in the PWM

Section)

Four channels for 32 kHz, 44.1 kHz, and 48 kHz

N/A

Loudness

Four channels

Three channels

Number of coefficient sets

stored

Three additional coefficient sets can be stored in memory

1.4

TAS5504 DAP Architecture

1.4.1 TAS5504 DAP Architecture Diagrams

Figure 1−2 shows the TAS5504 DAP architecture for Fs = 96 kHz. Note the TAS5504 bass management

architecture shown in channels 1, 2, 3, and 4. Note that the I2C registers are shown to help the designer

configure the TAS5504.

Figure 1−3 shows the TAS5504 architecture for Fs = 176.4 kHz or Fs = 192 kHz. Note that only channels 1,

2, and 4 contain all the features. Channel 3 is pass-through except for master volume control.

Figure 1−4 shows TAS5504 detailed channel processing. The output mixer is 4X2 for channels 1−2 and 4X3

for channels 3 and 4.

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