TAS5548 datasheet(11/120 Pages) TI

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TAS5548

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SLES270 – NOVEMBER 2012

2.4.7.2

TAS5548 Audio-Processing Feature Sets

The audio processing architecture of the TAS5548 DAP for normal and double speed configurations is

shown below.

Table 2-2. TAS5548 Audio-Processing Feature Sets

32 kHz–96 kHz

176.4- and 192-kHz

FEATURE

8-CHANNEL FEATURE SET

6 + 2 LINEOUT FEATURE SET

FEATURE SET

Signal-processing channels

6 + 2

Master volume

1 for 8 channels

1 for 6 channels

1 for 4 channels

Individual channel volume

controls

Four bass and treble tone controls

Two bass and treble tone

with ±18-dB range, programmable

controls with ±18-dB range,

corner frequencies, and second-

programmable corner

Bass and treble tone

order slopes

frequencies, and second-order

controls

L, R, and C

slopes for satellite channels

LS, RS

(selectable). One Bass Control

LBS, RBS

Sub

for Sub (channel 8)

Sub

Line L and R

Biquads

Dynamic range

1 for satellites and 1 for sub

1 for 7 satellites and 1 for sub

2 - 1 for 3 satellites and 1 for sub

compressors

(Line 1 & 2 Uncompressed)

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

Input/output mapping/

Channels 1, 2, 5, 6 has 4×1

eight input channels.

mixing

mixer on the output and input

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

DC-blocking filters

(implemented in PWM

Eight channels

section)

Digital de-emphasis

Eight channels for 32 kHz,

Six channels for 32 kHz, 44.1 kHz,

(implemented in PWM

N/A

44.1 kHz, and 48 kHz

and 48 kHz

section)

Loudness

Eight channels

Six channels

Four channels

Number of coefficient sets

Two additional coefficient sets can be stored in memory. (Bank Switching data for ASRC Bypass Mode)

stored

Description

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