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
SDA
SCL
SDOUT/SDIN5
SDIN1
SDIN2
SCLK
LRCLK
SDIN2-1
SDIN2-2
SCLKO /SCLKIN_2
LRCLKO / LRCKIN_2
OSCRES
PLL_FLTM
PLL_FLTP
MCLK
EMO1
ASEL_EMO2
PSVC/MCLKO
VR_DIG
VR_PWM
VR_ANA
AVDD
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
ASEL_EMO2
VALID
/MUTE
TEST
RESET
/HP_SEL
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TAS5548
SLES270A –NOVEMBER 2012–REVISED APRIL 2015
TAS5548 8-Channel HD Compatible Audio Processor with ASRC and PWM Output
1 Features – Adjustable Modulation Limit
1
• General Features
2 Applications
– 8ch Asynchronous Sample Rate Converter
Interface Seamlessly with Most Digital Audio
– 8 Channel Audio Processing for 32-192 kHz
Decoders
(ARSC to 96kHz)
– 4 Channel Native Audio Processing at 192kHZ
3 Description
– 30 kHz Audio Bandwidth for DTS-HD
The TAS5548 is an 8-channel Digital Pulse Width
Compatibility
Modulator (PWM) with Digital Audio Processing and
Sample Rate Converter that provides both advanced
– Energy Manager for Overall System Power
performance and a high level of system integration.
Control
TAS5548 is designed to support DTS-HD
– Power Supply Volume Control
specification Blu-ray HTiB applications. The ASRC
• Audio Input or Output
consists of two separate modules which handle 4
channels each. Therefore, it is possible to support up
– Up to Five Synchronous Serial Audio Inputs
to two different input sampling rates.
(10 Channels)
Texas Instruments Power Stages are designed to
– Up to One Synchronous Serial Audio Outputs
work seamlessly with the TAS5548. The TAS5548
(2 Channels)
also provides a high-performance, differential output
– I2S Master Mode When Used With External
to drive an external, differential-input, analog
Crystal
headphone amplifier.
– Slave Mode 32-192KHz With Auto/Manual
The TAS5548 supports AD, BD, and ternary
Sample Rate Detection
modulation operating at a 384-kHz switching rate for
– Eight Differential PWM Output That can
48-, 96-, and 192-kHz data. The external crystal used
Support AD or BD Modulation
must be 12.288 MHz. The TAS5548 also features
power-supply-volume-control (PSVC), which
– Two Differential PWM Headphone Outputs
improves dynamic range at lower power level and
– I2S Out for External Wireless Sub
can be used as part of a Class G power supply when
– PWM Output Supports Single Ended (S.E.) or
used with closed-loop PWM input power stages.
Bridge Tied Load (BTL)
Device Information
(1)
• Audio Processing
PART NUMBER PACKAGE BODY SIZE (NOM)
– Volume Control Range 18 dB to –127 dB
TAS5548 HTSSOP (56) 14.00 mm x 6.10 mm
(Master and Eight Channel Volume)
(1) For all available packages, see the orderable addendum at
– Bass and Treble Tone Controls With ±18-dB
the end of the datasheet.
Range, Selectable Corner Frequencies
– Configurable Loudness Compensation
Block Diagram
– Two Dynamic Range Compressors With Two
Thresholds, Two Offsets, and Three Slopes
– Seven Biquads Per Channel
• PWM Processing
– >105-dB Dynamic Range
– THD+N < 0.1% (0–40 kHz)
– 20-Hz–40-kHz, Flat Noise Floor for 32KHz -
192KHz
– Flexible Automute Logic With Programmable
Threshold and Duration for Noise-Free
Operation
– Power-Supply Volume Control (PSVC) in High-
Performance Applications
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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