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Texas Instruments TAS1020APFB
- Part No.:
- TAS1020APFB
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 48-TQFP
- Datasheet:
-
TAS1020APFB.pdf
- Description:
- IC STEREO USB AUD INTRFCE48-TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,576
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Product details
Overview
TAS1020APFB from Texas Instruments is a USB 1.1 peripheral interface IC designed for isochronous digital audio streaming, featuring an integrated 8052 MCU core, on-chip memory, and programmable codec port supporting AC-Link, I²S, AIC, or general-purpose modes. It operates with USB bus power or external +9 VDC, supports suspend/resume, and enables host-controlled firmware upgrades via DFU.
For engineers reviewing the TAS1020APFB datasheet, TAS1020APFB pinout, TAS1020APFB application, or TAS1020APFB equivalent, this page delivers verified technical context, real-world audio interface use cases, confirmed package mapping (TQFP-48), validated pin functions, and two documented alternative parts for USB audio peripheral design.
Technical Context
The TAS1020APFB implements a full-speed USB 1.1 device controller compliant with the USB Audio Class specification, using an embedded 8052 microcontroller to manage endpoint buffers, isochronous transfers, and descriptor handling without external RAM. Its codec interface supports AC'97 timing and signaling, with configurable clock generation (MCLKI) and GPIO-driven HID controls.
It integrates USB transceiver circuitry, internal voltage regulation, and register-mapped control logic for audio sample rate configuration (e.g., 44.1 kHz/48 kHz), channel count selection (stereo), and interrupt-driven event handling including remote wake-up. Firmware resides in external EPROM or is upgradable via USB DFU mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | Full-speed USB 1.1 device; supports isochronous endpoints for guaranteed audio bandwidth. |
| MCU Core | 8052-compatible 8-bit CPU with on-chip ROM and RAM; executes firmware for USB protocol stack and audio routing. |
| Codec Interface | Programmable digital audio port supporting AC-Link, I²S, AIC, or GPIO bit-banged modes; enables direct connection to AC'97 codecs. |
| Power Supply | Operates from USB bus power (5 V) or external +9 VDC; includes internal LDOs for core and I/O rails. |
| Firmware Upgrade | Supports Device Firmware Upgrade (DFU) per USB DFU 1.0 spec; allows field updates without hardware rework. |
| Suspend/Resume | Hardware-supported USB suspend/resume with remote wake-up capability via XINT pin. |
| GPIO | 8-bit Port 1 accessible for HID switches, LED indicators, or custom control signals; mapped to physical pins. |
Availability
TAS1020APFB is available at Aetrix Electronics and suitable for USB audio peripheral development, AC'97-based speaker systems, and embedded digital audio streaming applications requiring stable component supply and long-term design continuity.
Supply support for TAS1020APFB 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 company specializing in analog, embedded processing, and connectivity technologies, with decades of leadership in audio, USB, and mixed-signal IC design.
The TAS1020APFB belongs to TI's legacy digital audio interface product line, engineered specifically to simplify USB-to-AC'97 audio bridge implementation in PC peripherals, speaker docks, and evaluation platforms.
FAQ
What is the primary function of the TAS1020APFB in a USB audio system?
The TAS1020APFB serves as a dedicated USB peripheral interface IC that bridges USB host audio streams to AC'97 or I²S codecs. It handles USB enumeration, isochronous data transfer, and real-time audio protocol conversion - enabling plug-and-play stereo audio playback and recording without host driver customization. The TAS1020APFB integrates all necessary logic, memory, and timing control to operate as a self-contained USB audio endpoint.
Does the TAS1020APFB support four-channel audio output?
No - the TAS1020APFB natively supports stereo (2-channel) audio streaming per the USB Audio Class 1.0 specification and its reference firmware. While the EVM board includes a rear-channel jack (J5), the TAS1020APFB hardware and shipped firmware do not implement quadraphonic or multi-channel AC'97 extensions. Four-channel operation would require custom firmware and external codec support beyond the TAS1020APFB's defined capabilities.
Can the TAS1020APFB operate without external memory?
Yes - the TAS1020APFB contains sufficient on-chip ROM and RAM to execute its USB audio stack and control logic. External EPROM is optional and used only for storing application firmware; the TAS1020APFB can run preloaded code or accept firmware via DFU without persistent external memory. However, external EPROM is required for standalone operation in internal mode with non-volatile firmware storage.
What package type is used for the TAS1020APFB?
The TAS1020APFB is packaged in a 48-pin Thin Quad Flat Package (TQFP) with 0.5 mm pitch, designated as "PFB" in TI's ordering nomenclature. This surface-mount package is compatible with standard PCB assembly processes and matches the footprint used on the official TAS1020AEVM evaluation board.
Is RS-232 functionality built into the TAS1020APFB IC?
No - the TAS1020APFB IC does not include an RS-232 transceiver or UART peripheral. The RS-232 circuit referenced in the EVM documentation is implemented externally using discrete components (e.g., SN75LV4737ABDR) and is optional, unpopulated by default, and intended solely for debugging or monitoring via the emulator interface - not as an integrated feature of the TAS1020APFB itself.
TAS1020APFB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-TQFP
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Controller
- Interface:
- I2C
- Standards:
- USB 1.1
- Voltage - Supply:
- 3V ~ 3.6V
- Current - Supply:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 48-TQFP (7x7)
- Grade:
- -
- Qualification:
- -
TAS1020APFB FAQ
1.How can I place an order for TAS1020APFB through Aetrix?
Please submit a Request for Quotation (RFQ) for TAS1020APFB 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 TAS1020APFB reliable?
The price and inventory of TAS1020APFB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TAS1020APFB is usually 5 days.
3.What payment methods are accepted for TAS1020APFB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TAS1020APFB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TAS1020APFB?
TAS1020APFB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TAS1020APFB 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 TAS1020APFB?
For technical support, including TAS1020APFB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TAS1020APFB requirements.
6.How does Aetrix verify that TAS1020APFB is sourced from the original manufacturer or authorized distributors?
All TAS1020APFB 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 TAS1020APFB meets industry standards.
7.What is the process for return or replacement of TAS1020APFB?
All TAS1020APFB units undergo pre-shipment inspection (PSI). If there is an issue with TAS1020APFB, 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 TAS1020APFB part is unused and in its original packaging.
Return procedure for TAS1020APFB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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