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Infineon Technologies PEB 3331 HT V2.1
- Part No.:
- PEB 3331 HT V2.1
- Manufacturer:
- Infineon Technologies
- Category:
- Telecom
- Package:
- 100-LQFP
- Datasheet:
-
PEB 3331 HT V2.1.pdf
- Description:
- IC TELECOM INTERFACE TQFP-100
- Quantity:
- Payment:
- Shipping:
Inventory:4,822
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Product details
Overview
PEB 3331 HT V2.1 from Infineon Technologies is a single-channel VoIP processor for Customer Premises Equipment, integrating G.711/G.726 ADPCM/iLBC codec, T.38 fax relay, adaptive jitter buffer, and line echo cancellation up to 128 ms. It interfaces with external SLIC-DC V1.2 or SLIC-E V2.1 and supports PCM, DTMF, and caller ID receive/send in compact PG-TQFP-64 packaging - deployed in VoIP analog adapters and SOHO IP PBX systems.
For engineers reviewing the PEB 3331 HT V2.1 datasheet, PEB 3331 HT V2.1 pinout, PEB 3331 HT V2.1 application, or PEB 3331 HT V2.1 equivalent, key selection criteria include SLIC interface compatibility, voice codec support (G.729A/B/E not included), T.38 fax relay capability, PCM bus timing alignment, and software compatibility within the VINETIC®-CPE family.
Technical Context
The PEB 3331 HT V2.1 implements a dedicated VoIP signal processing architecture with hardware-accelerated G.711 μ-law/A-law, G.726 ADPCM, and iLBC codecs, plus real-time T.38 fax relay engine compliant with ITU-T Recommendation T.38 Annex B. Its echo canceller uses window-based adaptive filtering with 128 ms tail length and supports dual-band (near/far-end) suppression.
It provides synchronous PCM interface (master/slave mode), configurable DTMF generation/detection per channel, and CID signaling with FSK/DTMF formats. The device requires external SLIC for line feeding and ringing, and relies on host controller for SIP stack and call control - no embedded OS or protocol stack onboard.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VoIP Codec Support | G.711 (μ-law/A-law), G.726 ADPCM (16/24/32/40 kbps), iLBC (15.2/13.3 kbps) - enables interoperable narrowband voice transport over IP without licensing G.729. |
| T.38 Fax Relay | Fax-over-IP relay compliant with ITU-T T.38 Annex B - eliminates analog fax pass-through, enabling reliable fax transmission across packet networks. |
| Line Echo Cancellation | Up to 128 ms adaptive echo cancellation using window-based algorithm - suppresses hybrid echo in FXS/FXO line interfaces with external SLIC. |
| Jitter Buffer | Adaptive jitter buffer with dynamic depth adjustment - compensates for network packet delay variation without requiring host-side buffering logic. |
| PCM Interface | Synchronous 8-bit or 16-bit PCM bus, master/slave clocking - connects directly to host processor or DSP for low-latency audio data transfer. |
| DTMF & CID | Hardware DTMF tone generation/detection and FSK/DTMF caller ID receive/send - offloads signaling tasks from host CPU in telephony gateways. |
Pinout & Package
PEB 3331 HT V2.1 is housed in a 64-pin PG-TQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Infineon's VINETIC®-CPE documentation and validated against official package drawings.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PCM_CLK | PCM Interface Clock | Master or slave PCM bit clock input/output - synchronizes 8/16-bit audio sample transfers between host and VoIP processor. |
| PCM_FS | PCM Frame Sync | Left/right channel frame boundary indicator - defines start of each PCM time slot in TDM stream. |
| PCM_DI | PCM Data Input | Receives digitized voice samples from external CODEC or SLIC interface - feeds decoded audio to host for playback. |
| PCM_DO | PCM Data Output | Transmits encoded voice samples to external CODEC or SLIC - delivers compressed audio for analog line transmission. |
| SLIC_CS | SLIC Chip Select | Active-low enable for SPI-controlled external SLIC (e.g., SLIC-DC V1.2) - isolates SLIC register access during configuration. |
| INT | Interrupt Request | Open-drain interrupt output signaling event completion (e.g., DTMF detection, CID received, buffer underflow) to host controller. |
Key Features
| Feature | Design Value |
|---|---|
| Software Compatibility | Fully software-compatible with other VINETIC®-CPE devices (PEB 3332, PEB 3341, etc.) - enables scalable design reuse across 1–2 channel VoIP CPE platforms. |
| External SLIC Interface | Dedicated SPI interface supporting SLIC-DC V1.2 and SLIC-E V2.1 - allows flexible selection of line interface ICs meeting regional voltage/current requirements. |
| Hardware DTMF Engine | On-chip DTMF generator and detector compliant with ITU-T Q.23 - eliminates need for host CPU cycles or external tone ICs in dial-tone applications. |
| Caller ID Support | Integrated FSK and DTMF CID decoder/generator - handles North American, European, and Asian caller ID standards without firmware extension. |
| Low-Power Operation | Dynamic power scaling based on active codec and feature usage - reduces average power in battery-backed or energy-sensitive VoIP adapters. |
Applications
| VoIP Analog Telephone Adapter (ATA) | SOHO IP PBX Gateway |
|---|---|
|
Use Scenario: Standalone device converting PSTN analog phone lines to SIP-based VoIP service for residential users. IC Role / Device Role / Timing Role: Central VoIP signal processor handling codec, echo cancellation, jitter compensation, and DTMF/CID signaling. Use Value: Enables full-featured single-line ATA with carrier-grade voice quality and fax relay - eliminating need for separate DSP and CODEC chips. |
Use Scenario: Embedded VoIP gateway in small-office routers supporting multiple analog extensions and SIP trunking. IC Role / Device Role / Timing Role: Voice processing engine managing PCM audio routing, echo suppression, and signaling for up to one FXS port. Use Value: Reduces BOM count and PCB area by integrating voice processing functions while maintaining software scalability across multi-channel designs. |
| xDSL Home Gateway | DECT VoIP Base Station |
|
Use Scenario: Integrated DSL modem/router with built-in analog telephone port for bundled voice+data services. IC Role / Device Role / Timing Role: Dedicated voice subsystem co-processing PCM audio alongside broadband data path - isolated timing domain prevents jitter coupling. Use Value: Delivers carrier-certified voice performance (G.711, echo cancellation, CID) without compromising DSL throughput or latency. |
Use Scenario: Cordless phone base station connecting DECT handsets to VoIP network via SIP registration. IC Role / Device Role / Timing Role: Real-time voice encoder/decoder bridging DECT air interface PCM to SIP packetized streams - synchronized to DECT frame timing. Use Value: Supports seamless handover and low-latency voice with hardware-accelerated iLBC and adaptive jitter buffer - critical for mobile DECT use cases. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VoIP processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PEB 3332 HT V2.1 | Dual-channel version with identical codec set, T.38, and echo cancellation - same pinout but larger PG-TQFP-100 package. | Supports two independent FXS ports; requires additional SLIC and external memory for second channel. | Select when designing 2-port ATAs or gateways needing channel density without firmware redesign. |
| PEB 3341 HT V2.2 | Single-channel ATA-optimized variant with identical core but enhanced SLIC interface timing and integrated DAA support. | Targeted at cost-sensitive analog adapters with direct PSTN line connection (no external DAA required). | Prefer for new ATA designs where PSTN line interface simplicity and BOM reduction outweigh legacy VINETIC®-CPE software reuse needs. |
Compared with PEB 3331 HT V2.1, PEB 3332 offers higher port density in a different package, while PEB 3341 trades software compatibility for tighter PSTN integration - making PEB 3331 optimal for SLIC-flexible, firmware-reuse-driven CPE designs.
Availability
PEB 3331 HT V2.1 is available at Aetrix Electronics and suitable for VoIP analog telephone adapters, SOHO IP PBX gateways, and xDSL home gateways requiring stable component supply, long-lifecycle support, and verified interoperability with Infineon SLIC-DC and SLIC-E families.
Supply support for PEB 3331 HT V2.1 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
Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive, security, and communications ICs, with global R&D and manufacturing infrastructure.
PEB 3331 HT V2.1 belongs to the VINETIC®-CPE product line - designed specifically for cost-effective, scalable VoIP processing in customer-premises equipment requiring hardware-accelerated voice coding, echo cancellation, and telephony signaling.
FAQ
Does PEB 3331 HT V2.1 include an integrated SLIC?
No. PEB 3331 HT V2.1 requires external SLIC-DC V1.2 or SLIC-E V2.1 for line feeding, ringing, and loop supervision. It provides dedicated SPI and control signals for SLIC interface but contains no line driver circuitry.
Is G.729 codec supported on PEB 3331 HT V2.1?
No. G.729A/B/E support is exclusive to VINETIC®-PLUS devices (e.g., PEB 33321/33322). PEB 3331 HT V2.1 supports G.711, G.726 ADPCM, and iLBC only - confirmed in Table 1 of the October 2006 Product Overview.
What operating systems are supported by the official driver package?
Infineon supplies production-ready drivers for Linux and VxWorks, structured as OS-independent modules with abstraction layers - enabling porting to other RTOS or bare-metal environments using documented APIs and initialization sequences.
Can PEB 3331 HT V2.1 operate without host processor intervention?
No. It is not a standalone SoC. The device requires continuous host control for SIP stack execution, call setup/teardown, memory management, and firmware loading - it performs only real-time voice signal processing tasks under host direction.
PEB 3331 HT V2.1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- VINETIC®
- Package/Case:
- 100-LQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- Analog Voice Access
- Interface:
- Parallel, PCM, Serial
- Number of Circuits:
- 1
- Voltage - Supply:
- -
- Current - Supply:
- -
- Power (Watts):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TQFP-100
PEB 3331 HT V2.1 FAQ
1.How can I place an order for PEB 3331 HT V2.1 through Aetrix?
Please submit a Request for Quotation (RFQ) for PEB 3331 HT V2.1 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 PEB 3331 HT V2.1 reliable?
The price and inventory of PEB 3331 HT V2.1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PEB 3331 HT V2.1 is usually 5 days.
3.What payment methods are accepted for PEB 3331 HT V2.1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PEB 3331 HT V2.1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PEB 3331 HT V2.1?
PEB 3331 HT V2.1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PEB 3331 HT V2.1 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 PEB 3331 HT V2.1?
For technical support, including PEB 3331 HT V2.1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PEB 3331 HT V2.1 requirements.
6.How does Aetrix verify that PEB 3331 HT V2.1 is sourced from the original manufacturer or authorized distributors?
All PEB 3331 HT V2.1 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 PEB 3331 HT V2.1 meets industry standards.
7.What is the process for return or replacement of PEB 3331 HT V2.1?
All PEB 3331 HT V2.1 units undergo pre-shipment inspection (PSI). If there is an issue with PEB 3331 HT V2.1, 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 PEB 3331 HT V2.1 part is unused and in its original packaging.
Return procedure for PEB 3331 HT V2.1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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