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Infineon Technologies PEF 3304 HL V2.1
- Part No.:
- PEF 3304 HL V2.1
- Manufacturer:
- Infineon Technologies
- Category:
- Telecom
- Package:
- 176-LQFP
- Datasheet:
-
PEF 3304 HL V2.1.pdf
- Description:
- IC TELECOM INTERFACE 176-LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,815
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Product details
Overview
PEF 3304 HL V2.1 from Infineon Technologies is a 4-channel analog voice access IC optimized for VoIP residential gateways and ATAs, featuring integrated DSP with G.729/G.723.1/G.726 codec support, T.38 fax relay, and up to 128 ms line echo cancellation compliant with G.168-2002.
For engineers reviewing the PEF 3304 HL V2.1 datasheet, PEF 3304 HL V2.1 pinout, PEF 3304 HL V2.1 application, or PEF 3304 HL V2.1 equivalent, key selection criteria include channel count, SLIC compatibility (SLIC-DC, SLIC-E2), jitter buffer depth (up to 200 ms), AAL2/RTP packetization, and integrated caller-ID generation/detection.
Technical Context
The PEF 3304 HL V2.1 implements a dedicated voice-over-packet processing engine supporting both ATM AAL2 and IP-based RTP transport layers, with adaptive jitter buffering up to 200 ms and hardware-accelerated echo cancellation meeting G.168-2002 specifications for far-end echo suppression.
It integrates a programmable 4-channel CODEC compliant with ITU-T Q.552 and G.712, supports external SLIC interfacing via serial control bus, and embeds real-time voice compression/decompression for G.729A/B/E, G.723.1, G.726 ADPCM (16–40 kbit/s), and G.711 µ-law/A-law.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Channels | 4 independent POTS line interfaces with full-duplex PCM I/O |
| Echo Cancellation Tail | Up to 128 ms - meets G.168-2002 for far-end echo in DSL/FTTH access networks |
| Jitter Buffer Depth | Adaptive up to 200 ms - maintains voice quality under variable packet delay in VoIP routers |
| Vocoder Support | G.729A/B/E, G.723.1, G.726 (16/24/32/40 kbit/s), G.711 - enables multi-standard interoperability in ATAs |
| Fax Relay | T.38 compliant with V.17/V.21/V.27ter/V.29 - enables lossless fax transmission over IP without demodulation |
| Caller-ID | Integrated FSK/DTMF generator and detector - eliminates external tone decoder IC in residential gateways |
| SLIC Interface | Serial control bus compatible with SLIC-DC (PEF 4268), SLIC-E2 (PEB 4265-2), and TSLIC-S (PEB 4364) |
Pinout & Package
PEF 3304 HL V2.1 is housed in a PG-LBGA-144-1 package (144-pin low-profile ball grid array, 12 mm × 12 mm, 0.8 mm pitch), designed for high-density voice access board layouts with thermal pad grounding and symmetric I/O distribution.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO / VDDA / VDDD | Power supply domains | Separate 3.3 V I/O, 3.3 V analog, and 1.8 V digital core rails - enable noise isolation between voice ADC/DAC and DSP logic |
| PCM_TX / PCM_RX | Primary TDM interface | 8-bit or 16-bit PCM data lanes synchronized to FS and BCLK - directly connects to host controller or FPGA without glue logic |
| SLIC_SCLK / SLIC_SDAT / SLIC_CS | SLIC control bus | 3-wire serial interface for configuring external SLICs (e.g., PEF 4268) - supports dynamic line parameter adjustment per channel |
| RESET_N / CLK_IN | System initialization & timing | Active-low asynchronous reset and 24.576 MHz clock input - matches standard telephony sampling rate (8 kHz × 32 slots) |
| INT_N | Interrupt output | Open-drain status signal indicating DTMF detection, caller-ID event, or echo convergence - reduces polling overhead in embedded firmware |
Key Features
| Feature | Design Value |
|---|---|
| Encapsulated Voice Processing | Offloads all real-time-critical tasks (codec, echo cancellation, jitter management) from host CPU - enables use of low-cost ARM7 or MIPS24K controllers |
| Advanced Integrated Test & Diagnostic Functions (AITDF) | Enables automated line testing (loopback, impedance, battery feed) per GR-909 - reduces field service time in CPE deployments |
| Programmable Ringing Generator | Internal balanced ringing up to 85 VRMS - eliminates need for external high-voltage transformer in ATA designs |
| Patent-Indemnified Vocoder Suite | G.729A/B/E and G.723.1 licensing covered by Infineon - removes royalty risk for volume VoIP gateway OEMs |
| Hardware-Based T.38 Fax Relay | Dedicated fax processing engine handles V.21/V.27ter modulation/demodulation in silicon - avoids software-based latency and packet loss sensitivity |
Applications
| Residential VoIP Gateway | VoIP Router with ATA Functionality |
|---|---|
Use Scenario: Single-box solution connecting PSTN lines to broadband IP network for home users with multiple handsets. IC Role / Device Role / Timing Role: Primary voice processing IC handling 4-channel PCM conversion, echo cancellation, and T.38 fax relay. Use Value: Enables simultaneous VoIP calls on all 4 lines with <20 ms end-to-end latency and G.168-compliant echo suppression. | Use Scenario: Integrated access device combining routing, firewall, and analog telephony for small office deployment. IC Role / Device Role / Timing Role: Central voice subsystem managing line signaling, caller-ID detection, and adaptive jitter buffering across 4 POTS ports. Use Value: Eliminates external DSP and tone decoder ICs while supporting G.729A and T.38 in same silicon footprint. |
| DSLAM Line Card | Cable eMTA Front-End |
Use Scenario: Central office DSLAM shelf providing voice-over-DSL services to 4 subscriber lines per card. IC Role / Device Role / Timing Role: Channelized voice interface bridging TDM backplane to packet-switched core via AAL2 segmentation. Use Value: Delivers carrier-grade voice quality with 128 ms echo tail and GR-909 line diagnostics for remote fault isolation. | Use Scenario: Embedded Multimedia Terminal Adapter integrating DOCSIS modem and analog telephony for cable operators. IC Role / Device Role / Timing Role: Voice front-end IC interfacing with SLIC-DC (PEF 4268) and performing G.726 ADPCM compression at 32 kbit/s. Use Value: Reduces BOM cost by integrating DTMF receiver, caller-ID generator, and metering pulse output (2.5 VRMS @ 200 Ω). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-channel VoIP codec applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PEF 3304 EL2 | Same pinout and firmware compatibility; includes enhanced power management and extended temperature range (−40°C to +105°C) | Required for industrial-grade DSLAM line cards operating in uncontrolled environments | Select when extended thermal stability and lower standby current (<50 µA) are mandatory |
| PEB 3324 HL | 4-channel variant with higher DSP performance tier (supports simultaneous G.729 + G.723.1 + iLBC), no internal ringing generator | Suitable for VoIP-PBX systems requiring multi-vocoder concurrency but using external ringing transformers | Select when concurrent multi-standard vocoder operation is needed and external SLIC provides ringing |
Compared with PEF 3304 EL2, the HL version trades extended temperature rating for lower cost and standard industrial grade; compared with PEB 3324 HL, it offers integrated ringing and reduced DSP headroom-ideal for cost-sensitive residential gateways where single-vocoder operation suffices.
Availability
PEF 3304 HL V2.1 is available at Aetrix Electronics and suitable for residential VoIP gateways, cable eMTAs, and DSLAM line cards requiring stable component supply, long-term lifecycle support, and compliance with ITU-T Q.552 and G.712 voice quality standards.
Supply support for PEF 3304 HL 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, and communications ICs, with global R&D centers and ISO/TS 16949-certified wafer fabs.
The VINETIC family targets wireline voice access infrastructure, delivering integrated analog front-end, DSP, and packet-processing capabilities specifically for CPE and central office equipment in VoIP, VoATM, and hybrid access networks.
FAQ
What SLIC devices are compatible with PEF 3304 HL V2.1?
PEF 3304 HL V2.1 supports Infineon's SLIC-DC (PEF 4268), SLIC-E2 (PEB 4265-2), SLIC-S2 (PEB 4264-2), and TSLIC-S (PEB 4364) via its 3-wire serial control interface. Configuration is performed through register writes over SLIC_SCLK/SDAT/CS, with timing compliant to SLIC device datasheets.
Does PEF 3304 HL V2.1 require external RAM for firmware execution?
No. PEF 3304 HL V2.1 includes integrated code RAM for full firmware download and execution, eliminating the need for external SDRAM or Flash memory. Firmware is loaded via SPI or parallel interface during boot, and executes entirely within on-chip memory.
Is T.38 fax relay implemented in hardware or firmware?
T.38 fax relay is implemented in dedicated hardware blocks within the PEF 3304 HL V2.1's DSP subsystem, supporting V.21, V.27ter, and V.29 modulation schemes without host CPU intervention. This ensures deterministic latency and packet-loss resilience required for fax transmission over IP.
What is the maximum supported PCM data rate and format?
PEF 3304 HL V2.1 supports 8-bit or 16-bit linear PCM at 8 kHz sampling rate across 32 time slots (T1/E1 frame structure). The PCM interface operates synchronously with BCLK and FS signals, and supports both MSB-first and LSB-first data ordering configurable via register settings.
PEF 3304 HL V2.1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- VINETIC®
- Package/Case:
- 176-LQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- Analog Voice Access
- Interface:
- JTAG, PCM, SCI/SPI
- Number of Circuits:
- 4
- Voltage - Supply:
- -
- Current - Supply:
- -
- Power (Watts):
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-LQFP-176-2
PEF 3304 HL V2.1 FAQ
1.How can I place an order for PEF 3304 HL V2.1 through Aetrix?
Please submit a Request for Quotation (RFQ) for PEF 3304 HL 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 PEF 3304 HL V2.1 reliable?
The price and inventory of PEF 3304 HL 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 PEF 3304 HL V2.1 is usually 5 days.
3.What payment methods are accepted for PEF 3304 HL V2.1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PEF 3304 HL V2.1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PEF 3304 HL V2.1?
PEF 3304 HL V2.1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PEF 3304 HL 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 PEF 3304 HL V2.1?
For technical support, including PEF 3304 HL V2.1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PEF 3304 HL V2.1 requirements.
6.How does Aetrix verify that PEF 3304 HL V2.1 is sourced from the original manufacturer or authorized distributors?
All PEF 3304 HL 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 PEF 3304 HL V2.1 meets industry standards.
7.What is the process for return or replacement of PEF 3304 HL V2.1?
All PEF 3304 HL V2.1 units undergo pre-shipment inspection (PSI). If there is an issue with PEF 3304 HL 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 PEF 3304 HL V2.1 part is unused and in its original packaging.
Return procedure for PEF 3304 HL V2.1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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