TAS5518 datasheet(20/102 Pages) TI

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Introduction

SLES115 — August 2004

TAS5518

Table 1−2. TAS5518 Audio Processing Feature Sets

FEATURE

32 − 96 kHz

8 CHANNEL FEATURE SET

32 − 96 kHz

6 + 2 LINE OUT FEATURE SET

176.4- AND 192-kHz

FEATURE SET

Signal processing

channels

6 + 2

Pass through channels

N/A

Master volume

1 for eight channels

1 for six channels

1 for three channels

Individual channel

volume controls

Bass and treble tone

controls

Four Bass and Treble tone controls

with ±18 dB range, programmable

corner frequencies, and 2nd order

slopes

L, R and C (Ch 1, 2, and 7)

LS, RS (Ch 3 and 4)

LBS, RBS (Ch 5 and 6)

Sub (Ch 8)

Four Bass and Treble tone controls

with ±18 dB range, programmable

corner frequencies, and 2nd order

slopes

L, R and C (Ch 1, 2, and 7)

LS, RS (Ch 3 and 4)

Sub, (Ch 8)

Line L and R (Ch 5 and 6)

Two Bass and Treble tone controls

with ±18 dB range, programmable

corner frequencies, and 2nd order

slopes

L and R (Ch 1 and 2)

Sub (Ch 8)

Biquads

Dynamic range

compressors

DRC1 for seven satellites and DRC2

for sub

DRC1 for five satellites and DRC2

for sub (Ch 5 and 6 Uncompressed)

DRC1 for two satellites and DRC2

for sub

Input output

mapping/mixing

Each of the eight signal-processing channels input can be any ratio of the

eight input channels.

Each of the eight outputs can be any ratio of any two processed channels.

Each of the three

signal-processing channels or the

five pass-though channels inputs

can be any ratio of the eight input

channels.

Each of the eight outputs can be

any ratio of any of the three

processed or five bypass

channels.

DC blocking filters

(Implemented in PWM

Section)

Eight channels

Digital de-emphasis

(Implemented in PWM

Section)

Eight channels for 32 kHz, 44.1 kHz,

and 48 kHz

Six channels for 32 kHz, 44.1 kHz,

and 48 kHz

N/A

Loudness

Eight channels

Six channels

Three channels

Number of Coefficient

sets Stored

Three additional coefficient sets can be stored in memory

1.5

TAS5518 DAP Architecture

1.5.1 TAS5518 DAP Architecture Diagrams

Figure 1−4 shows the TAS5518 DAP architecture for Fs = 96 kHz. Note the TAS5518 bass management

architecture shown in channels 1, 2, 7, and 8. Note that the I2C registers are shown to help the designer

configure the TAS5518.

Figure 1−5 shows the TAS5518 architecture for Fs = 176.4 kHz or Fs = 192 kHz. Note that only channels 1,

2, and 8 contain all the features. Channels 3−7 are pass-through except for master volume control.

Figure 1−6 shows TAS5518 detailed channel processing. The output mixer is 8X2 for channels 1−6 and *X3

for channels 7 and 8.

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