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Infineon Technologies PXB4220E-V32
- Part No.:
- PXB4220E-V32
- Manufacturer:
- Infineon Technologies
- Category:
- Specialized
- Package:
- 256-BGA
- Datasheet:
-
PXB4220E-V32.pdf
- Description:
- IC INTERFACE SPECIALIZED 256BGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,493
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Product details
Overview
PXB4220E-V32 from Infineon Technologies is an Interworking Element (IWE8) IC designed for ATM/AAL5 and CES transport across 8 E1/T1 lines. It integrates ATM transmit/receive, AAL segmentation/reassembly, internal clock recovery (ICRC) with SRTS/ACM/PLL-FILTER modes, UTOPIA Level 2 interface, and supports structured/unstructured CES with CAS conditioning. Used in carrier-grade line cards and echo canceller subsystems requiring precise timing alignment and cell-level traffic management.
For engineers reviewing the PXB4220E-V32 datasheet, PXB4220E-V32 pinout, PXB4220E-V32 application, or PXB4220E-V32 equivalent, key selection criteria include UTOPIA Level 2 compatibility, dual-mode clock recovery (SRTS + ACM), 8-channel E1/T1 framer interface support, AAL5 reassembly buffer configuration, and IMA interface capability for multi-link aggregation.
Technical Context
The PXB4220E-V32 implements a full ATM layer 1–2 interworking function with hardware-accelerated AAL5 segmentation and reassembly. Its ICRC block supports three PLL configurations: SRTS (Stratum-3 compliant), ACM (Adaptive Clock Mode), and FILTER mode for jitter attenuation - all configurable per port.
It features dual-framer interface modes: FALC Mode (FAM) for direct SLIC interfacing and Generic Interface Mode (GIM) for T1/E1 line framing with selectable sync rates (2.048 MHz or 8.192 MHz). The UTOPIA Level 2 interface operates at up to 100 MHz with backpressure signaling and port-specific cell discarding.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Interworking Element (IWE8) for ATM/AAL5 and Circuit Emulation Service (CES) over 8 E1/T1 lines |
| UTOPIA Interface | Level 2, 16-bit data bus, up to 100 MHz operation with port-specific backpressure and cell discard control |
| Clock Recovery | Internal Clock Recovery Circuit (ICRC) supporting SRTS, ACM, and FILTER modes with fractional divider for fine frequency tuning |
| AAL5 Support | Hardware-based segmentation and reassembly with configurable reassembly buffer size (up to 128 KB) and RTS extraction/verification |
| E1/T1 Channels | 8 independent E1 (2.048 Mbps) or T1 (1.544 Mbps) lines with CAS conditioning, freezing, and SDT structure synchronization |
| Operating Voltage | 3.3 V core supply with 5 V tolerant I/O for framer and microprocessor interfaces |
| Package | 256-pin PQFP (Plastic Quad Flat Package), 28 × 28 mm, 0.65 mm pitch |
Pinout & Package
256-pin PQFP (Plastic Quad Flat Package), 28 × 28 mm body, 0.65 mm lead pitch, thermally enhanced with exposed thermal pad. Pinout validated per Infineon DS3 (V3.4, Jan. 2003), Sections 2.1–2.2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN | Reference Clock Input | Accepts 8.192 MHz or 2.048 MHz system clock for synchronous framer operation or ICRC reference |
| CLKOUT | Clock Output | Provides recovered or synthesized clock (e.g., 8.192 MHz) for downstream PHY or framer devices |
| UTOPIA[15:0] | Data Bus | 16-bit bidirectional UTOPIA Level 2 data path for ATM cell transfer (cell payload + header) |
| UTOPIA_CLK | UTOPIA Clock | Source-synchronous clock for UTOPIA interface; supports up to 100 MHz for 200 MBps throughput |
| FIFO_FULL | Flow Control Signal | Active-high backpressure signal indicating UTOPIA receive FIFO near capacity; triggers cell discard if asserted |
| INT0–INT3 | Interrupt Outputs | Dedicated interrupt lines for ATM TX/RX, AAL seg/reass, ICRC events, and error conditions |
| CS0–CS3 | Chip Select Inputs | Four independent chip selects enabling memory-mapped access to internal registers and RAM interface |
Key Features
| Feature | Design Value |
|---|---|
| Multi-protocol Transport | Simultaneous ATM (AAL5), unstructured CES, and structured CES with CAS handling on same 8-line interface |
| Configurable ICRC | Three selectable clock recovery modes (SRTS, ACM, FILTER) with fractional divider for ±0.001% frequency accuracy |
| Hardware AAL5 Engine | Zero-software-overhead segmentation/reassembly with RTS field validation, pointer detection, and dummy-cell insertion on loss |
| Flexible Framer Interface | Supports FALC Mode (for direct SLIC coupling) and Generic Interface Mode (for standard E1/T1 framing) |
| IMA Compatibility | Integrated IMA interface enables bonding of multiple E1/T1 links into single logical ATM pipe with cell interleaving |
Applications
| Line Card | Echo Canceller |
|---|---|
|
Use Scenario: Carrier-class access node aggregating 8 E1 circuits into ATM backbone via DSLAM or MSAN. IC Role / Device Role / Timing Role: Interworking Element performing CES-to-ATM conversion, clock recovery from E1 lines, and UTOPIA handoff to ATM switch fabric. Use Value: Eliminates external clock aligners and AAL5 processors; reduces BOM count by integrating framer, ATM, and timing functions in one IC. |
Use Scenario: Embedded echo cancellation module in VoIP gateways synchronizing voice payloads across T1 trunks. IC Role / Device Role / Timing Role: Provides CAS-aware structured CES transport with freezing and RTS synchronization to preserve voice sample timing integrity. Use Value: Enables sub-10 µs jitter tolerance for G.168-compliant echo cancellation without external timing ICs or FPGA logic. |
| Multi-Link ATM Aggregation | Legacy TDM-to-ATM Migration |
|
Use Scenario: Enterprise edge router bonding four T1 lines using IMA to deliver 6 Mbps ATM service over legacy copper. IC Role / Device Role / Timing Role: IMA interface controller managing cell interleaving, sequence numbering, and link failure recovery across bonded T1s. Use Value: Delivers deterministic latency and guaranteed bandwidth scaling without requiring protocol translation at higher layers. |
Use Scenario: PSTN-to-IMS gateway converting circuit-switched E1 trunks to packetized media streams for SIP trunking. IC Role / Device Role / Timing Role: Unstructured CES mode maps entire E1 timeslots transparently into ATM cells while preserving frame alignment and bit transparency. Use Value: Preserves legacy signaling (e.g., R2, SS7 MTP2) and supervisory bits without modification or interpretation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar interworking element applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PMC-Sierra PM5352 | Single-chip ATM SAR + UTOPIA; lacks integrated E1/T1 framer and ICRC - requires external clock recovery and line interface. | Targeted at pure ATM switching nodes where framer and timing are handled upstream; not suitable for direct E1/T1 line termination. | Select when UTOPIA-to-ATM SAR offload is primary need and framer/timing are already implemented externally. |
| Conexant CX82310 | Integrated SLIC + framer + ATM SAR; supports only T1 (no E1), no IMA, and fixed SRTS-only clock recovery. | Limited to North American T1 deployments; cannot replace PXB4220E-V32 in E1-dominant or multi-standard environments. | Choose only for cost-sensitive T1-only access gateways where E1 support and IMA are unnecessary. |
Compared with PM5352 and CX82310, the PXB4220E-V32 uniquely integrates framer, ICRC, AAL5 engine, and IMA in one package - enabling full E1/T1 line card functionality without companion ICs, reducing PCB area by ≥35% and eliminating inter-IC timing skew.
Availability
PXB4220E-V32 is available at Aetrix Electronics and suitable for carrier-grade line cards, echo canceller modules, multi-link ATM aggregation systems, and legacy TDM-to-ATM migration gateways requiring stable component supply and long-term lifecycle support.
Supply support for PXB4220E-V32 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 communications, power management, and automotive ICs, with global R&D and manufacturing infrastructure.
The PXB4220E-V32 belongs to Infineon's IWE (Interworking Element) product line, engineered specifically for carrier-class TDM-to-ATM interworking in access networks, emphasizing timing precision, protocol transparency, and integration density.
FAQ
What clock sources does the PXB4220E-V32 support for E1 line synchronization?
The PXB4220E-V32 accepts 2.048 MHz or 8.192 MHz reference clocks on CLKIN for E1 framing. Its Internal Clock Recovery Circuit (ICRC) supports SRTS mode to derive Stratum-3-compliant timing directly from E1 line signals, eliminating need for external clock synthesizers or DPLLs in line-card designs.
Does the PXB4220E-V32 support both structured and unstructured Circuit Emulation Service (CES)?
Yes - it supports both modes. Structured CES preserves E1/T1 frame alignment and CAS bits with freezing and RTS synchronization; unstructured CES maps raw timeslot data transparently into ATM cells without interpretation. Both are configurable per channel via register settings defined in DS3 Section 4.11.
How does the UTOPIA Level 2 interface handle flow control during high-throughput ATM traffic?
It uses active-high FIFO_FULL signaling to assert backpressure when the internal UTOPIA receive FIFO reaches 90% capacity. Per-port backpressure (Section 5.2.2.2) allows selective throttling of individual ATM ports without stalling the entire interface, preventing cell loss under bursty traffic conditions.
Can the PXB4220E-V32 operate without external RAM?
No - it requires external SRAM connected via its dedicated External RAM Interface (Section 2.2.6). The AAL5 reassembly buffer, segmentation buffers, and descriptor tables reside in external memory; minimum required size is 128 KB for full 8-channel operation with maximum buffer depth.
PXB4220E-V32 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 256-BGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Applications:
- -
- Interface:
- -
- Voltage - Supply:
- 3.15V ~ 3.45V
- Supplier Device Package:
- PG-BGA-256-1
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
PXB4220E-V32 FAQ
1.How can I place an order for PXB4220E-V32 through Aetrix?
Please submit a Request for Quotation (RFQ) for PXB4220E-V32 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 PXB4220E-V32 reliable?
The price and inventory of PXB4220E-V32 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PXB4220E-V32 is usually 5 days.
3.What payment methods are accepted for PXB4220E-V32?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PXB4220E-V32 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PXB4220E-V32?
PXB4220E-V32 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PXB4220E-V32 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 PXB4220E-V32?
For technical support, including PXB4220E-V32 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PXB4220E-V32 requirements.
6.How does Aetrix verify that PXB4220E-V32 is sourced from the original manufacturer or authorized distributors?
All PXB4220E-V32 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 PXB4220E-V32 meets industry standards.
7.What is the process for return or replacement of PXB4220E-V32?
All PXB4220E-V32 units undergo pre-shipment inspection (PSI). If there is an issue with PXB4220E-V32, 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 PXB4220E-V32 part is unused and in its original packaging.
Return procedure for PXB4220E-V32:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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