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Texas Instruments TAS3108DCPR
- Part No.:
- TAS3108DCPR
- Manufacturer:
- Texas Instruments
- Category:
- Audio Special Purpose
- Package:
- 38-PowerTFSOP (0.173", 4.40mm Width)
- Datasheet:
-
TAS3108DCPR.pdf
- Description:
- IC AUDIO SGNL PROCESSOR 38HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,373
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Product details
Overview
TAS3108DCPR from Texas Instruments is a fully programmable 8-channel audio digital signal processor (DSP) with integrated 8051 microcontroller, 48-bit data path, 28-bit coefficients, and 76-bit MAC. It supports sample rates from 32 kHz to 192 kHz, 16–32-bit word sizes, and TDM/I2S/left/right-justified serial audio formats. Used in high-fidelity automotive and home audio systems for real-time equalization, mixing, and volume control.
For engineers reviewing the TAS3108DCPR datasheet, TAS3108DCPR pinout, TAS3108DCPR application, or TAS3108DCPR equivalent, this page delivers verified technical context, validated pin functions, confirmed audio processing capabilities, and precise alternative part comparisons - all grounded in TI's SLES152B datasheet and official package documentation.
Technical Context
The TAS3108DCPR integrates a fixed-point audio DSP core with 48-bit data path and 28-bit coefficient memory, executing up to five operations per clock cycle at 135 MHz max speed. Its dual I2C interface includes slave port (SDA1/SCL1) for system control and master port (SDA2/SCL2) for EEPROM boot loading.
It features four independent serial audio ports (SDIN1–4 / SDOUT1–4), supporting simultaneous 2-channel and TDM (4/6/8-channel) operation with format conversion (e.g., I2S ↔ left-justified). Clock architecture allows both master (MCLKO/SCLKOUT1/2) and slave (MCLKI/SCLKIN) modes, with PLL-based clock generation from 6–24.576 MHz crystal or MCLK input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Processing Core | 48-bit data path, 28-bit coefficients, single-cycle 28×48-bit MAC with 76-bit accumulator |
| Max Clock Speed | 135 MHz - enables >2800 processing cycles per sample at 48 kHz |
| Audio Channels | 8-channel programmable I/O - supports 4×2-channel or 1×8-channel TDM configurations |
| Sample Rate Range | 32 kHz to 192 kHz - covers CD, DVD-Audio, SACD, and high-res streaming |
| Memory Resources | 3K words 54-bit program RAM, 1K words 48-bit data RAM, 1K words 28-bit coefficient RAM, 5.8K words 24-bit delay RAM |
| Serial Interface | Four bidirectional SAPs with independent format control - supports 15 stereo/TDM data formats including I2S, left/right-justified, and TDM variants |
| Power Supply | Single 3.3-V supply - internal regulators generate AVDD/DVDD rails; no external LDOs required |
| Temperature Grade | Commercial grade (0°C to 70°C) - distinct from automotive-grade TAS3108IA (-40°C to 105°C) |
Pinout & Package
Package: 38-pin Thin Shrink Small-Outline Package (TSSOP), suffix DCP - 9.7 mm × 4.4 mm body, 0.65 mm pitch, exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDIN1–SDIN4 | Serial audio input channels | Accept 2-channel or TDM (4/6/8-ch) data in I2S/left/right-justified formats; SDIN1 supports full TDM |
| SDOUT1–SDOUT4 | Serial audio output channels | Output processed audio; SDOUT1 active in TDM mode; all support independent format selection |
| MCLKI / MCLKO | Master clock I/O | MCLKI accepts 6–24.576 MHz reference; MCLKO outputs derived clock for system synchronization |
| SCLKIN / SCLKOUT1 / SCLKOUT2 | Bit clock I/O | SCLKIN receives bit clock in slave mode; SCLKOUT1 clocks inputs, SCLKOUT2 clocks outputs |
| LRCLK | Left/right channel clock | Frame sync signal - rising edge initiates sample period for non-I2S; falling edge for I2S |
| SDA1 / SCL1 | I2C slave interface | System controller communication port - read status, write registers, update volume/treble/bass |
| SDA2 / SCL2 | I2C master interface | Bootloads firmware and coefficients from external EEPROM during power-up initialization |
| RESET / PDN | Asynchronous reset & power-down | RESET (active-low) forces full hardware reset; PDN (firmware-configurable) stops clocks while preserving state |
| GPIO | Programmable general-purpose I/O | Firmware-configurable as input or output post-boot; used for EEPROM presence detection or status signaling |
| AVDD / DVDD / AVSS / DVSS | Analog/digital power & ground | Separate analog/digital supplies reduce noise coupling; AVDD powers audio front-end, DVDD powers logic |
Key Features
| Feature | Design Value |
|---|---|
| Soft Volume Controller | Zero-crossing mute/unmute prevents pop/click artifacts during real-time gain adjustment |
| Dither Generator | Linear feedback shift register (LFSR)-based dithering reduces quantization noise in low-level signals |
| Independent Input/Output Format Control | Enables format conversion (e.g., TDM input → I2S output) without external glue logic |
| Efficient log₂/2ˣ Estimator | Hardware-accelerated logarithmic scaling for dynamic range compression and loudness compensation |
| 1022-word Data RAM + 1022-word Coefficient RAM | Enables complex multi-stage filtering (e.g., parametric EQ + crossover + delay) within single device |
| Two I2C Ports (Slave + Master) | Eliminates need for external microcontroller to manage bootloading and runtime control simultaneously |
Applications
| Automotive Sound Systems | Digital Televisions |
|---|---|
Use Scenario: Multi-zone audio processing in premium vehicle infotainment with 8+ speaker outputs, active noise cancellation, and surround virtualization. IC Role / Device Role / Timing Role: Central audio DSP handling AEC, FIR/EQ, level management, and TDM-to-I2S bridging for amplifier interfaces. Use Value: Single-chip solution replaces discrete DSP + microcontroller combo; 135-MHz core ensures sub-1-ms latency for real-time acoustic echo cancellation. |
Use Scenario: Integrated audio processing in 4K/UHD smart TVs requiring Dolby Digital decoding, bass management, and HDMI ARC audio return path handling. IC Role / Device Role / Timing Role: Audio preprocessor converting HDMI I2S streams into multi-channel PCM for internal DACs or external amplifiers. Use Value: Supports 192-kHz sampling and 32-bit word depth - preserves resolution of high-bitrate broadcast audio without truncation or interpolation. |
| Home Theater Systems | Mini-Component Audio |
Use Scenario: Compact AV receivers with 5.1/7.1 decoding, room correction, and dynamic range compression for late-night listening. IC Role / Device Role / Timing Role: Real-time FIR filter engine applying spatial calibration profiles stored in on-chip coefficient RAM. Use Value: 5.8K words of 24-bit delay RAM enables up to 122.5 ms channel delay - sufficient for full-room acoustic alignment at 48 kHz. |
Use Scenario: High-fidelity bookshelf speakers with built-in Class-D amplification and digital crossover. IC Role / Device Role / Timing Role: Dual-role processor: handles source switching (optical/coaxial/I2S) and implements 2-way active crossover with phase-linear FIR filters. Use Value: Independent input/output format control allows seamless integration of legacy SPDIF sources and modern USB-audio DACs via TDM bridging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio DSP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TAS3108IA | Identical architecture and pinout; qualified to AEC-Q100 Grade 2 (–40°C to 105°C) | Required for under-hood or dashboard-mounted automotive audio modules | Select TAS3108IA when operating temperature exceeds 70°C or automotive qualification is mandatory |
| TAS3204DCPR | Successor device with enhanced 192-MHz core, 64-bit data path, and expanded memory (8K coeff RAM); not pin-compatible | Supports higher channel counts (16 ch), advanced algorithms (Dolby Atmos metadata parsing), and faster boot times | Choose TAS3204DCPR for new designs needing future-proofing, lower latency, or expanded algorithm complexity |
Compared with TAS3108IA, the TAS3108DCPR lacks automotive qualification but offers identical functionality at lower cost for commercial environments; versus TAS3204DCPR, it provides proven stability and simpler firmware migration paths despite lower peak performance and memory capacity.
Availability
TAS3108DCPR is available at Aetrix Electronics and suitable for automotive infotainment, premium television audio subsystems, and high-end home theater receivers requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TAS3108DCPR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and digital signal processing technologies with over 50 years of innovation in audio and automotive electronics.
The TAS3108DCPR belongs to TI's TAS3xxx family of programmable audio DSPs, designed specifically for high-fidelity, low-latency audio processing in space-constrained consumer and automotive applications where integration, flexibility, and deterministic timing are critical.
FAQ
What is the maximum sample rate supported by the TAS3108DCPR?
The TAS3108DCPR supports sample rates from 32 kHz to 192 kHz, including standard rates like 44.1 kHz (CD), 48 kHz (DVD), 96 kHz, and 192 kHz (high-resolution audio). This range is confirmed in Section 1.1 of the SLES152B datasheet and enabled by its flexible clock architecture accepting MCLK inputs up to 24.576 MHz.
Does the TAS3108DCPR include an integrated microcontroller?
Yes, the TAS3108DCPR integrates an 8051-based M8051Warp microprocessor with 256 bytes IRAM, 2 KB ERAM, and 12 KB code RAM. It manages I2C communication, SAP configuration, GPIO control, and coordinates audio DSP core execution - eliminating the need for an external MCU in most implementations.
Can the TAS3108DCPR perform format conversion between TDM and I2S?
Yes, the TAS3108DCPR supports bidirectional format conversion between TDM (4/6/8-channel) and 2-channel I2S, as well as between left/right-justified and I2S. Table 3-1 in the datasheet explicitly lists these conversions, and the independent IM[3:0]/OM[3:0] register controls enable simultaneous input/output format selection.
What is the function of the two I2C interfaces on the TAS3108DCPR?
The TAS3108DCPR has two dedicated I2C interfaces: SDA1/SCL1 operates as a slave port for runtime system control (e.g., volume updates, status reads), while SDA2/SCL2 functions exclusively as a master port to bootload firmware and coefficients from external EEPROM during power-up - enabling autonomous initialization without host intervention.
Is the TAS3108DCPR pin-compatible with the TAS3108IA?
Yes, the TAS3108DCPR and TAS3108IA share identical pinout, package (38-pin TSSOP), electrical characteristics, and functional architecture. The only difference is qualification: TAS3108IA is AEC-Q100 Grade 2 qualified (–40°C to 105°C), while TAS3108DCPR is commercial grade (0°C to 70°C).
TAS3108DCPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 38-PowerTFSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Audio Signal Processor
- Applications:
- Audio
- Number of Channels:
- 4
- Interface:
- I2C
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Specifications:
- -
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
TAS3108DCPR FAQ
1.How can I place an order for TAS3108DCPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TAS3108DCPR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TAS3108DCPR reliable?
The price and inventory of TAS3108DCPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TAS3108DCPR is usually 5 days.
3.What payment methods are accepted for TAS3108DCPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TAS3108DCPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TAS3108DCPR?
TAS3108DCPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TAS3108DCPR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TAS3108DCPR?
For technical support, including TAS3108DCPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TAS3108DCPR requirements.
6.How does Aetrix verify that TAS3108DCPR is sourced from the original manufacturer or authorized distributors?
All TAS3108DCPR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TAS3108DCPR meets industry standards.
7.What is the process for return or replacement of TAS3108DCPR?
All TAS3108DCPR units undergo pre-shipment inspection (PSI). If there is an issue with TAS3108DCPR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TAS3108DCPR part is unused and in its original packaging.
Return procedure for TAS3108DCPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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