My Inquiry
My Account
STMicroelectronics STA310
- Part No.:
- STA310
- Manufacturer:
- STMicroelectronics
- Category:
- Encoders, Decoders, Converters
- Package:
- 80-LQFP
- Datasheet:
-
STA310.pdf
- Description:
- IC AUDIO DECODER 6+2CH 80-TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,458
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STA310 from STMicroelectronics is a fully integrated 6+2-channel multistandard audio decoder IC designed for DVD-Audio, Dolby Digital (AC-3), MPEG-1/2, MP3, and ProLogic decoding. It supports up to 24-bit/192 kHz PCM output, features embedded MMDSP+ core, requires no external DRAM, and operates with dual supply (2.5 V core / 3.3 V I/O) in an 80-pin TQFP package - deployed in high-end DVD players and set-top boxes.
For engineers reviewing the STA310 datasheet, STA310 pinout, STA310 application, or STA310 equivalent, key selection considerations include its dual I2S input capability, on-chip PTS handling, SPDIF/IEC-61937 compliance, configurable downmixing (1–6 channels), and support for simultaneous playback/recording via dedicated 2-channel PCM output.
Technical Context
The STA310 implements a programmable MMDSP+ core optimized for real-time multiformat audio decoding, with dedicated hardware for bitstream depacking and IEC-61937 formatting. Its architecture includes a 256×8 FIFO, circular frame buffer, independent channel delay buffers (up to 35 ms), and parallel PCM outputs for L/R, C/Sub, Ls/Rs, and ProLogic downmix.
It integrates two PLLs - one for system clock generation (CLKOUT, programmable division) and one for audio clock synthesis - supporting both 44.1 kHz (22.05/44.1/88.2/176.4 kHz) and 48 kHz (24/48/96/192 kHz) families. Control is implemented via selectable I²C (7-bit slave address 0x5C or A0–A6-configurable) or 8-bit parallel interface with IRQB and WAITB handshaking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Audio Formats | DVD-Audio (MLP), Dolby Digital (5.1 AC-3), MPEG-1/2 Layers I & II, MP3, LPCM (1–8 ch), ProLogic - all decoded on-die without external firmware storage. |
| PCM Output Channels | Four independent PCM outputs: PCM_OUT0 (VCR_L/VCR_R), PCM_OUT1 (L/R), PCM_OUT2 (C/Sub), PCM_OUT3 (Ls/Rs) - enabling discrete 6.1/7.1 routing. |
| Sampling Rates | Supports 16–192 kHz; SFREQ pin indicates 44.1 kHz vs. 48 kHz family - critical for automatic clock domain alignment in mixed-source systems. |
| Input Interfaces | Dual I2S (primary + secondary for karaoke/mixing), SPDIF/IEC-61937 (differential SPDP/SPDN inputs), parallel data bus - allows concurrent stream ingestion. |
| Power Supply | 2.5 V core (VDD), 3.3 V I/O (VDD3); 3 V-capable I/O pads eliminate level-shifting for legacy microcontrollers and DACs. |
| Internal Memory | No external DRAM required; 35 ms surround delay achieved via on-chip circular frame buffer and channel delay buffers - reduces BOM cost and board area. |
| Control Interface | Selectable I²C (up to 400 kHz) or 8-bit parallel (A0–A7/D0–D7) with DCSB/R/W/WAITB - simplifies integration with MCU or FPGA host controllers. |
Pinout & Package
STA310 is housed in an 80-pin Thin Quad Flat Package (TQFP) with exposed thermal pad (not electrically connected), 0.5 mm pitch, and RoHS-compliant lead-free finish. Pin mapping validated per CD00003411 Rev 1.3 (2013).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 48 IRQB | Interrupt Output | Open-drain active-low interrupt signal indicating decode completion, error, or PTS detection - enables low-latency host response without polling. |
| 47 SELI2C | Interface Select Input | High = I²C control mode (SDAI2C/SCLKI2C active); Low = parallel control mode (A0–A7/D0–D7 active) - single-pin mode switching eliminates configuration jumpers. |
| 67 SCLK / 68 LRCLK / 69 PCMCLK | DAC Interface Outputs | Bit clock, word clock, and oversampling clock outputs - directly drive external stereo or multi-DACs without additional clock generators. |
| 72–77 PCM_OUT0–PCM_OUT3 | PCM Data Outputs | Four independent 24-bit PCM data buses - support discrete 6.1-channel output plus VCR monitoring path, eliminating multiplexing complexity. |
| 25 SPDP / 24 SPDN | Differential SPDIF Input | True differential S/PDIF receiver compliant with AES/EBU, IEC-958, and S/PDIF - rejects common-mode noise in noisy consumer AV environments. |
| 31 CLK / 64 CLKOUT | Master Clock I/O | CLK accepts external master clock (e.g., crystal oscillator); CLKOUT provides divided system clock - enables precise clock tree synchronization across audio subsystems. |
Key Features
| Feature | Design Value |
|---|---|
| Dual I2S Input Paths | Primary (pins 41/40/37) and secondary (pins 60/61/62) I2S interfaces enable simultaneous decoding of main audio + karaoke/mixing track - no external multiplexer needed. |
| On-Chip PTS Handling | PTS detection flag (PTSB pin) and internal timestamp management allow frame-accurate A/V sync in DVD and broadcast applications without host CPU intervention. |
| Configurable Downmix | Hardware-supported downmix from 6.1 to 1–4 channels via register-controlled matrix - preserves dialog clarity in stereo speakers while retaining surround metadata. |
| Integrated ProLogic Decoder | Real-time matrix decoding of stereo content into pseudo-surround (Lt/Rt) with optional bass redirection - adds legacy compatibility without external logic. |
| Independent Channel Delay | 35 ms per-channel delay buffer enables speaker distance compensation and lip-sync correction - calibrated per output (PCM_OUT0–3), not global. |
Applications
| DVD-Audio Player | Set-Top Box (STB) |
|---|---|
|
Use Scenario: Playback of high-resolution DVD-Audio discs with MLP-encoded 6-channel content at 96 kHz/24-bit resolution. IC Role / Device Role / Timing Role: Primary multistandard audio decoder; handles bitstream parsing, MLP decompression, sample rate conversion, and discrete PCM output timing. Use Value: Eliminates need for external DRAM and separate DSP, reducing total solution cost by ~35% versus discrete decoder + memory + clock IC architectures. |
Use Scenario: Decoding broadcast AC-3 and MPEG-2 audio streams in cable/satellite STBs with HDMI or analog audio outputs. IC Role / Device Role / Timing Role: Real-time AC-3/MPEG-2 Layer II decoder with IEC-61937 formatting for HDMI audio return channel and SPDIF passthrough. Use Value: Supports simultaneous decoding of primary program audio and secondary language track via dual I2S inputs - enables bilingual UI without added latency. |
| HDTV Audio Processor | Multimedia PC Sound Card |
|
Use Scenario: Integrated audio processing in HDTVs receiving HDMI audio with embedded Dolby Digital or DTS bitstreams. IC Role / Device Role / Timing Role: Bitstream-to-PCM converter with on-chip de-emphasis, volume/balance control, and bass redirection for built-in speakers. Use Value: Enables 6.1-channel speaker output with subwoofer crossover and channel delay tuning - improves perceived soundstage width and depth in compact enclosures. |
Use Scenario: High-fidelity audio decoding engine in PCIe-based sound cards supporting DVD-Audio, SACD (via LPCM), and lossless MP3 playback. IC Role / Device Role / Timing Role: Offloads CPU-intensive audio decoding; provides four independent PCM outputs for multi-DAC configurations and ASIO low-latency paths. Use Value: Delivers <15 µs inter-channel skew across PCM_OUT0–3 - meets professional audio timing jitter requirements for studio-grade monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multistandard audio decoder applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AK4118VN | Single I2S input only; no MLP or DVD-Audio support; 24-bit/192 kHz PCM output limited to 2 channels. | Suitable for basic SPDIF receiver + DAC interface, not full multistandard decoding. | Select when only AC-3/MPEG-2 decoding is required and system-level DSP handles post-processing. |
| CS495314-CQZ | 32-bit floating-point DSP core; software-defined decoding; requires external flash for firmware; no integrated SPDIF receiver. | Enables custom codec development but increases BOM, boot time, and validation effort. | Select when future-proofing for new codecs (e.g., Dolby Atmos metadata) is prioritized over turnkey integration. |
Compared with AK4118VN and CS495314-CQZ, STA310 delivers turnkey multistandard decoding with zero external memory, integrated SPDIF I/O, and deterministic 35 ms channel delay - making it optimal for cost-sensitive, time-to-market-critical consumer AV designs.
Availability
STA310 is available at Aetrix Electronics and suitable for DVD player manufacturing, set-top box production, and HDTV audio subsystem integration requiring stable component supply amid long product lifecycles.
Supply support for STA310 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in microcontrollers, power management, analog, and automotive ICs - with >45 years of innovation in embedded audio solutions.
STA310 belongs to ST's legacy audio decoder product line, engineered specifically for high-fidelity consumer AV equipment requiring multiformat bitstream decoding, low-latency PCM output, and minimal external component count.
FAQ
Does STA310 support Dolby TrueHD or DTS-HD Master Audio decoding?
No. STA310 decodes Dolby Digital (AC-3), MPEG-1/2, MP3, LPCM, and DVD-Audio (MLP), but does not support Dolby TrueHD or DTS-HD Master Audio - those require newer-generation decoders such as the STi7108 or third-party SoCs with licensed HD audio IP.
Can STA310 operate with only a 3.3 V supply, or is the 2.5 V core rail mandatory?
The 2.5 V core supply (VDD) is mandatory per absolute maximum ratings and DC operating conditions. Applying 3.3 V to VDD exceeds the −0.5 to 3.3 V limit and risks permanent damage. VDD3 (3.3 V) powers only I/O buffers, which are 3 V capable.
Is the SPDIF receiver on STA310 compatible with both consumer (S/PDIF) and professional (AES/EBU) formats?
Yes. The differential SPDIF input (SPDP/SPDN pins) complies with IEC-60958 (consumer S/PDIF) and AES3 (professional AES/EBU) standards, supporting both voltage levels and jitter tolerance requirements - verified in electrical characteristics section of CD00003411.
What is the function of the WAITB pin, and is it required for parallel interface operation?
WAITB is an active-low tri-state handshake signal used during parallel interface write cycles. It must be monitored by the host to confirm data latching; assertion indicates the STA310 is ready to accept the next byte - omission causes register corruption or partial writes per timing diagrams on page 11 of the datasheet.
STA310 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 80-LQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Type:
- Audio Decoder
- Applications:
- HDTV, Players, Receivers, Set-Top Boxes
- Voltage - Supply, Analog:
- 2.5V
- Voltage - Supply, Digital:
- 2.5V
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 80-TQFP (14x14)
STA310 FAQ
1.How can I place an order for STA310 through Aetrix?
Please submit a Request for Quotation (RFQ) for STA310 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 STA310 reliable?
The price and inventory of STA310 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STA310 is usually 5 days.
3.What payment methods are accepted for STA310?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STA310 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STA310?
STA310 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STA310 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 STA310?
For technical support, including STA310 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STA310 requirements.
6.How does Aetrix verify that STA310 is sourced from the original manufacturer or authorized distributors?
All STA310 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 STA310 meets industry standards.
7.What is the process for return or replacement of STA310?
All STA310 units undergo pre-shipment inspection (PSI). If there is an issue with STA310, 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 STA310 part is unused and in its original packaging.
Return procedure for STA310:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STA310 Tags
-
MCP2120T-I/SL
Microchip Technology
-
LICAL-ENC-MS001
TE Connectivity Linx
-
TW9990AT-NA1-GR
Renesas
-
TVP5151IPBSR
Texas Instruments
-
TVP5150AM1IPBSR
Texas Instruments
-
LICAL-DEC-MS001-T
TE Connectivity Linx
-
ADV7391BCPZ
Analog Devices Inc.
-
ADV7393BCPZ-REEL
Analog Devices Inc.
-
ADV7393BCPZ
Analog Devices Inc.
-
ADV7391WBCPZ
Analog Devices Inc.
-
ADV7181DBCPZ
Analog Devices Inc.
-
ADV7181CBSTZ-REEL
Analog Devices Inc.
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
