Datasheet

TAS5548
www.ti.com 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 32 kHz–96 kHz 176.4- and 192-kHz
FEATURE
8-CHANNEL FEATURE SET 6 + 2 LINEOUT FEATURE SET FEATURE SET
Signal-processing channels 8 6 + 2 4
Master volume 1 for 8 channels 1 for 6 channels 1 for 4 channels
Individual channel volume
8 4
controls
Four bass and treble tone controls Four bass and treble tone controls
Two bass and treble tone
with ±18-dB range, programmable with ±18-dB range, programmable
controls with ±18-dB range,
corner frequencies, and second- corner frequencies, and second-
programmable corner
Bass and treble tone order slopes order slopes
frequencies, and second-order
controls L, R, and C L, R, and C
slopes for satellite channels
LS, RS LS, RS
(selectable). One Bass Control
LBS, RBS Sub
for Sub (channel 8)
Sub Line L and R
Biquads 56 31
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
Copyright © 2012, Texas Instruments Incorporated Description 11
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