IC DGTL AUDIO PWM PROC 64-TQFP

TAS5508APAG

Manufacturer Part NumberTAS5508APAG
DescriptionIC DGTL AUDIO PWM PROC 64-TQFP
ManufacturerTexas Instruments
TypePWM Processor
TAS5508APAG datasheet
 


Specifications of TAS5508APAG

ApplicationsDVDMounting TypeSurface Mount
Package / Case64-TQFP, 64-VQFPFor Use WithTAS5342DDV6EVM - TAS5342DDV6EVMTAS5508-5142K7EVM - EVAL MODULE FOR TAS5508B/TAS5142TAS5508-5122C6EVM - EVAL MODULE FOR TAS5508B/TAS5122TAS5508-5121K8EVM - EVAL MODULE FOR TAS5508B/TAS5121
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther names296-17475
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TAS5508A
8-Channel Digital Audio PWM Processor
SLES119A – FEBRUARY 2004 – REVISED JULY 2009
To support efficiently the processing requirements of both multichannel 32-kHz to 96-kHz data and the
2-channel 176.4-kHz and 192-kHz data, the TAS5508A has separate audio-processing features for
32-kHz to 96-kHz data rates and for 176.4 kHz and 192 kHz. See
processing feature sets.
2.2.5.2 TAS5508A Audio Signal-Processing Functions
The DAP provides 10 primary signal-processing functions:
1. The data-processing input has a full 8 8 input crossbar mixer. This enables each input to be any ratio
of the eight input channels.
2
2. Two I
C programmable threshold detectors in each channel support automute.
3. Seven biquads per channel
4. Four soft bass and treble tone controls with 18-dB range, programmable corner frequencies, and
second-order slopes. In 8-channel mode, bass and treble controls are normally configured as follows:
– Bass and treble 1: Channel 1 (left), channel 2 (right), and channel 7 (center)
– Bass and treble 2: Channel 3 (left surround) and channel 4 (right surround)
– Bass and treble 3: Channel 5 (left back surround) and channel 6 (right back surround)
– Bass and treble 4: Channel 8 (subwoofer)
5. Individual channel and master volume controls. Each control provides an adjustment range of 18 dB to
–127 dB. This permits a total volume device control range of 36 dB to –127 dB plus mute. The master
volume control can be configured to control six or eight channels. The DAP soft volume and mute
2
update interval is I
C programmable. The update is performed at a fixed rate regardless of the sample
rate.
6. Programmable loudness compensation that is controlled via the combination of the master and
individual volume settings.
7. Two dual-threshold dual-rate dynamic range compressors (DRCs). The volume gain values provided
are used as input parameters using the maximum RMS (master volume
8. 8 2 output mixer (channels 1–6). Each output can be any ratio of any two signal-processed channels.
9. 8 3 output mixer (channels 7 and 8). Each output can be any ratio of any three signal-processed
channels.
10. The DAP maintains three sets of coefficient banks that are used to maintain separate sets of
sample-rate-dependent parameters for the biquad, tone controls, loudness, and DRC in RAM. These
can be set to be automatically selected for one or more data sample rates or can be manually selected
2
under I
C program control. This feature enables coefficients for different sample rates to be stored in
the TAS5508A and then selected when needed.
20
Description
www.ti.com
Table 2-2
for a summary of TAS5508A
individual channel volume).
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