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TAS5548DCAR Datasheet(PDF) 14 Page - Texas Instruments

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Part # TAS5548DCAR
Description  8-Channel HD Compatible Audio Processor
PDF  116 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TAS5548DCAR Datasheet(HTML) 14 Page - Texas Instruments

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Serial Audio
Receiver
2x Stereo
Serial Audio
Receiver
2x Stereo
Serial Audio
Transciever
Stereo
4ch ASRC
4ch ASRC
Fixed Flow
Digital Audio
Processor
(DAP)
10ch input
8ch Processor
8ch Output Mixer
Clocks
(Osc, PLL
etc)
12.288
8ch PWM
Generator
+ Headphone
(PWM)
Bypass
MCU
I2C
Control
Power
Supply
Volume
Control
(PSVC)
Energy
Manager
(EMO)
Power
SDOUT/SDIN5
SDIN1
SDIN2
SCLK
LRCLK
SDIN2-1
SDIN2-2
SCLKO /SCLKIN_2
LRCLKO / LRCKIN_2
AVDD_PWM
AVSS
AVSS_PWM
DVDD1
DVDD2
DVSS1
DVSS2
/PDN
PWM_HPM_L&R
PWM_HPP_L&R
/BKND_ERR
PWM_x_1
through 8
VALID
/MUTE
TAS5548
SLES270A – NOVEMBER 2012 – REVISED APRIL 2015
www.ti.com
7 Detailed Description
7.1 Overview
The TAS5548 is an 8-channel Digital Pulse Width Modulator (PWM) with Digital Audio Processing and Sample
Rate Converter that provides both advanced performance and a high level of system integration. The TAS5548 is
designed to interface seamlessly with most digital audio decoders. The TAS5548 is designed to support DTS-HD
specification Blu-ray HTiB applications. The ASRC consists of two separate modules which handle 4 channels
each. Therefore, it is possible to support up to two different input sampling rates.
The TAS5548 can drive eight channels of H-bridge power stages. Texas Instruments Power Stages are designed
to work seamlessly with the TAS5548. The TAS5548 supports either the single-ended or bridge tied-load
configuration. The TAS5548 also provides a high-performance, differential output to drive an external, differential-
input, analog headphone amplifier.
The TAS5548 supports AD, BD, and ternary modulation operating at a 384-kHz switching rate for 48-, 96, and
192-kHz data. The 8× oversampling combined with the fourth-order noise shaper provides a broad, flat noise
floor and excellent dynamic range from 20 Hz to 32 kHz.
The TAS5548 can be both an I2S Master or I2S Slave. The external crystal drives the DAP processor, and can
drive the I2S Clocks, out of the device. The TAS5548 accepts master clock rates of 64, 128, 192, 256, 384, 512,
and 768 fS. The TAS5548 accepts a 64-fS bit clock. The external crystal used must be 12.288 MHz.
The TAS5548 also features power-supply-volume-control (PSVC), which improves dynamic range at lower power
level and can be used as part of a Class G Power Supply when used with closed-loop PWM input power stages.
7.2 Functional Block Diagram
Figure 13. Block Diagram
14
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Product Folder Links: TAS5548



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