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Texas Instruments TAS3108DCPRG4
- Part No.:
- TAS3108DCPRG4
- Manufacturer:
- Texas Instruments
- Category:
- Audio Special Purpose
- Package:
- 38-PowerTFSOP (0.173", 4.40mm Width)
- Datasheet:
-
TAS3108DCPRG4.pdf
- Description:
- IC AUDIO SGNL PROCESSOR 38HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,105
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Product details
Overview
TAS3108DCPRG4 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, operates on a single 3.3-V supply, and delivers >2800 processing cycles per sample at 48 kHz - enabling real-time equalization, volume control, and format conversion in automotive sound systems and home theater receivers.
For engineers reviewing the TAS3108DCPRG4 datasheet, TAS3108DCPRG4 pinout, TAS3108DCPRG4 application, or TAS3108DCPRG4 equivalent, this page provides verified technical context, validated pin functions, confirmed TDM/I2S format handling, exact memory allocation (3K program RAM, 1K data RAM, 5.8K delay RAM), and two documented alternative audio DSPs for system-level migration planning.
Technical Context
The TAS3108DCPRG4 integrates a fixed-point audio DSP core with dual I²C interfaces - one slave-only (SDA1/SCL1) for host control and one master-only (SDA2/SCL2) for EEPROM boot loading. Its M8051Warp MCU executes firmware to manage SAP configuration, volume updates, and GPIO behavior post-reset.
It supports independent input/output serial audio port (SAP) formats including 2-channel left/right-justified, I²S, and TDM (4/6/8-channel), with configurable word lengths (16–32 bit) and clock modes (master/slave). The device uses internal PLLs controlled via register 0x00 and requires valid MCLKI or XTALI during reset release to initialize properly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Processing Core | 48-bit data path, 28-bit coefficients, 76-bit MAC - enables high-precision FIR/IIR filtering without overflow in multi-stage audio algorithms |
| Sample Rate Support | 32 kHz to 192 kHz - covers CD, DVD-Audio, SACD, and high-res streaming audio standards |
| Serial Audio Ports | 4-input / 4-output SAPs with independent format selection - allows simultaneous TDM input and I²S output for flexible system interconnect |
| Memory Resources | 3K × 54-bit program RAM, 1K × 48-bit data RAM, 1K × 28-bit coefficient RAM, 5.8K × 24-bit delay RAM - sufficient for 122.5 ms latency buffer at 48 kHz |
| Power Supply | Single 3.3-V supply with on-chip AVDD/DVDD regulation - eliminates need for external LDOs in cost-sensitive designs |
| Package & Temp Range | 38-pin TSSOP (DCP), commercial grade (0°C to 70°C) - compatible with standard SMT reflow and board space-constrained audio modules |
| Clock Flexibility | Accepts 6–24.576 MHz MCLKI or 6–20 MHz crystal - supports common audio clocks (12.288 MHz, 24.576 MHz) without external PLL |
Pinout & Package
38-pin Thin Shrink Small-Outline Package (TSSOP, DCP) with exposed thermal pad; lead-free and RoHS-compliant. Pin 1 = AVSS (analog ground), pin 38 = AVDD (analog 3.3 V).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDIN1–SDIN4 | Serial audio input channels | Accept 2-channel or TDM (4/6/8) data in I²S/left/right-justified formats; SDIN1 supports TDM when enabled |
| SDOUT1–SDOUT4 | Serial audio output channels | Output processed audio; SDOUT1 carries TDM output when selected - all outputs support independent format control |
| SCLKIN, SCLKOUT1, SCLKOUT2 | Bit clock interface | SCLKIN receives bit clock in slave mode; SCLKOUT1 clocks inputs, SCLKOUT2 clocks outputs - enables synchronous multi-device timing |
| LRCLK | Left/right channel clock | Bi-directional frame sync; polarity determines I²S vs non-I²S sample window alignment - critical for deterministic 1.5/2.5-sample latency |
| MCLKI / XTALI / XTALO | Master clock source | MCLKI accepts external digital clock; XTALI/XTALO drive crystal oscillator - both feed PLL for internal clock generation |
| RESET / PDN | Control signals | Asynchronous active-low RESET initializes all registers and starts 8051 boot; PDN halts clocks while preserving RAM state for low-power suspend |
| SDA1/SCL1 / SDA2/SCL2 | I²C interfaces | SDA1/SCL1 = slave-only for host commands; SDA2/SCL2 = master-only for EEPROM boot - prevents bus contention in multi-device systems |
| GPIO | Programmable I/O | Configurable via 8051 firmware as input or output; used during boot to indicate EEPROM presence or enter test mode |
Key Features
| Feature | Design Value |
|---|---|
| Independent SAP format control | Input and output ports can operate in different formats (e.g., TDM in → I²S out) - eliminates external format translators in AV receivers |
| Soft volume controller | Zero-crossing mute/unmute and smooth gain ramping - prevents audible clicks during dynamic level changes in consumer audio |
| Dither generator | Linear feedback shift register (LFSR)-based dither - reduces quantization noise in 16-bit output paths without increasing THD+N |
| Efficient log₂/2ˣ estimator | Hardware-accelerated logarithmic scaling - speeds up loudness compensation and dynamic range compression algorithms |
| Five operations per clock cycle | Parallel execution of MAC, memory access, and control logic - achieves >2800 cycles/sample at 48 kHz on 135-MHz core |
Applications
| Automotive Sound Systems | Digital Televisions |
|---|---|
Use Scenario: Multi-zone audio processing in premium vehicle infotainment with 8-channel amplifier driving front/rear/surround speakers. IC Role / Device Role / Timing Role: Central audio DSP performing real-time EQ, time alignment, and speaker protection - synchronized to head unit's 48-kHz I²S stream. Use Value: Enables factory-tuned acoustic profiles and adaptive cabin compensation using on-chip 5.8K delay RAM for precise speaker delay calibration. |
Use Scenario: Integrated audio subsystem in 4K UHD smart TV supporting Dolby Digital decoding and virtual surround synthesis. IC Role / Device Role / Timing Role: Post-decode audio processor handling format conversion (Dolby bitstream → PCM), bass management, and HDMI ARC passthrough. Use Value: Delivers <125 ms end-to-end latency using deterministic 1.5-sample I²S-to-I²S path - meets broadcast lip-sync requirements. |
| Home Theater Systems | Mini-Component Audio |
Use Scenario: 7.1-channel AV receiver with HDMI audio extraction, room correction, and multi-room zone distribution. IC Role / Device Role / Timing Role: Main audio DSP executing Dirac Live or Audyssey MultEQ algorithms - fed via TDM from HDMI audio extractor IC. Use Value: Leverages 3K program RAM to store multiple calibrated room profiles and switch between them without external flash access delay. |
Use Scenario: Compact stereo amplifier with Bluetooth input, USB DAC, and analog line-in - requiring low-latency mixing and headphone amp control. IC Role / Device Role / Timing Role: Audio hub managing three input sources, volume leveling, and headphone/line-out routing - clocked by internal 12.288-MHz crystal. Use Value: Single-supply 3.3-V operation and integrated regulators reduce BOM count by 3 components versus discrete LDO + codec + DSP solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio DSP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TAS3204DCPR | 4-channel version with identical 48-bit core, same TSSOP-38 package, but reduced RAM (1.5K program, 512 data) | Targeted at stereo/quad systems without 7.1 or multi-zone requirements | Select when channel count and memory budget allow simplification - retains pin compatibility and firmware migration path |
| ADAU1701JSTZ-RL | 400-MIPS SigmaDSP core, 28-bit data path, 56-bit accumulator, SPI/I²C interface, no embedded MCU | Requires external microcontroller for boot and control; optimized for SigmaStudio-based development | Choose for rapid algorithm prototyping with graphical tools - trade embedded MCU convenience for higher MIPS and SigmaStudio ecosystem |
Compared with TAS3108DCPRG4, TAS3204DCPR offers direct pin and firmware compatibility at lower channel count, while ADAU1701JSTZ-RL provides higher computational throughput and SigmaStudio integration but requires external host control - making TAS3108DCPRG4 optimal for self-contained, MCU-managed audio systems.
Availability
TAS3108DCPRG4 is available at Aetrix Electronics and suitable for automotive infotainment, premium television audio, home theater receivers, and compact stereo amplifiers requiring stable component supply across production lifecycles.
Supply support for TAS3108DCPRG4 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 technologies - with over 40 years of audio IC innovation.
The TAS3108 product line was designed for high-fidelity, low-latency audio processing in cost-sensitive commercial audio systems - combining programmable DSP, embedded MCU, and flexible serial interfaces in a single chip.
FAQ
What is the maximum sample rate supported by the TAS3108DCPRG4?
The TAS3108DCPRG4 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 validated by its clock architecture, which accepts MCLKI up to 24.576 MHz to sustain 192-kHz operation with 256-fS oversampling.
Does the TAS3108DCPRG4 include an embedded microcontroller?
Yes, the TAS3108DCPRG4 integrates an M8051Warp 8-bit microprocessor with 256 bytes of IRAM, 2 KB of ERAM, and 12 KB of code RAM. It manages I²C communication, SAP configuration, GPIO control, and boot sequence - eliminating the need for an external MCU in many audio system designs.
Can the TAS3108DCPRG4 perform format conversion between TDM and I²S?
Yes, the TAS3108DCPRG4 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 register 0x00 allows independent configuration of input and output port formats.
What is the power supply requirement for the TAS3108DCPRG4?
The TAS3108DCPRG4 operates from a single 3.3-V supply applied to DVDD and AVDD pins. Internal regulators generate all required analog and digital voltages, so no external LDOs or split supplies are needed - simplifying PCB design and reducing BOM cost.
How does the TAS3108DCPRG4 handle reset and power-down sequences?
The TAS3108DCPRG4 uses asynchronous active-low RESET to initialize all registers and start the 8051 boot process, requiring valid MCLKI or XTALI during release. PDN is a firmware-definable pin that stops all clocks while preserving RAM contents - enabling ultra-low-power suspend states without full reinitialization.
TAS3108DCPRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 38-PowerTFSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
TAS3108DCPRG4 FAQ
1.How can I place an order for TAS3108DCPRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TAS3108DCPRG4 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 TAS3108DCPRG4 reliable?
The price and inventory of TAS3108DCPRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TAS3108DCPRG4 is usually 5 days.
3.What payment methods are accepted for TAS3108DCPRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TAS3108DCPRG4 transactions.
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4.How is shipping managed for TAS3108DCPRG4?
TAS3108DCPRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TAS3108DCPRG4 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 TAS3108DCPRG4?
For technical support, including TAS3108DCPRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TAS3108DCPRG4 requirements.
6.How does Aetrix verify that TAS3108DCPRG4 is sourced from the original manufacturer or authorized distributors?
All TAS3108DCPRG4 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 TAS3108DCPRG4 meets industry standards.
7.What is the process for return or replacement of TAS3108DCPRG4?
All TAS3108DCPRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TAS3108DCPRG4, 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 TAS3108DCPRG4 part is unused and in its original packaging.
Return procedure for TAS3108DCPRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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