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Infineon Technologies PEF 21624 E V2.2-G
- Part No.:
- PEF 21624 E V2.2-G
- Manufacturer:
- Infineon Technologies
- Category:
- Telecom
- Package:
- 324-LBGA
- Datasheet:
-
PEF 21624 E V2.2-G.pdf
- Description:
- IC TELECOM INTERFACE LBGA-324
- Quantity:
- Payment:
- Shipping:
Inventory:3,099
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Product details
Overview
PEF 21624 E V2.2-G from Infineon Technologies is a single-channel symmetric DSL (SHDSL) front-end transceiver IC compliant with ITU-T G.991.2 (G.SHDSL.bis) and ETSI TS 101524. It integrates DSP, microcontroller, analog front end, line driver, hybrid, and 128-byte TX/RX FIFO per channel, operates at 3.3 V and 1.8 V supplies, consumes ~500 mW, and targets TDM-based leased-line infrastructure.
For engineers reviewing the PEF 21624 E V2.2-G datasheet, PEF 21624 E V2.2-G pinout, PEF 21624 E V2.2-G application, or PEF 21624 E V2.2-G equivalent, this device serves as a drop-in SHDSL physical layer solution for E1/T1 replacement, repeater/regenerator units, and SDH/SONET termination where low power, small footprint, and M-pair support are critical.
Technical Context
The PEF 21624 E V2.2-G implements TC-PAM line coding with programmable framer and supports TDM clocks from 1.544 MHz to 16.384 MHz. Its integrated M-pair unit enables dynamic loop adaptation, while tunable hybrid circuitry optimizes reach on varying copper loop impedances.
It functions in three operational modes - Line Termination Unit (LTU), Network Termination Unit (NTU), and Regenerator Unit (COT/RT) - and includes four integrated HDLC controllers for EOC handling, one per channel, with full line probing per ITU-T G.991.2 (2004).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standard Compliance | ITU-T G.991.2 (G.SHDSL.bis) and ETSI TS 101524 - ensures interoperability with global SHDSL networks and certified repeater deployments. |
| Data Rate Range | 144 kbit/s to 6.392 Mbit/s in 8 kbit/s steps - supports fractional and full E1/T1 rates without external rate adaptation logic. |
| Power Supply | 3.3 V and 1.8 V dual rails - eliminates need for intermediate regulators and simplifies PCB power delivery network. |
| Power Consumption | ~500 mW per channel - enables thermally constrained remote-powered repeater designs with minimal heatsinking. |
| Operating Temperature | –40°C to +85°C - qualified for uncontrolled outdoor cabinet and central office environments. |
| TDM Clock Support | 1.544 MHz, 2.048 MHz, 2.312 MHz, 4.096 MHz, 8.192 MHz, 16.384 MHz - matches standard E1/T1 framing and SONET/SDH transport timing requirements. |
| FIFO Depth | 128-byte TX/RX per channel - buffers jittered TDM streams and accommodates variable host interface latency. |
Pinout & Package
Package: P-LBGA-324 (19 mm × 19 mm, 1.27 mm pitch), RoHS-compliant, thermally enhanced for high-density line card layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD_3V3 / VDD_1V8 | Power supply inputs | Dual-rail operation enables independent domain regulation and reduces noise coupling between digital core and analog front end. |
| CLKIN | TDM reference clock input | Accepts industry-standard E1/T1/SONET clock frequencies; internal PLL locks to selected rate for framer synchronization. |
| TDATA / RDATA | Bit-serial TDM interface | Unidirectional 8-bit parallel or bit-serial mode supports direct connection to FPGA or ASIC TDM switch fabric. |
| TXP/TXN, RXP/RXN | Differential line driver/receiver | Full-duplex SHDSL line interface with integrated hybrid; supports up to 15.5 km reach on 0.4 mm copper. |
| RESET_N | Active-low hardware reset | Synchronizes internal state machines and clears FIFOs; required before configuration via serial host interface. |
| SCL/SDA | I²C host interface | Configures operating mode, PSD shaping, framer settings, and diagnostics without requiring dedicated SPI controller. |
Key Features
| Feature | Design Value |
|---|---|
| Fully integrated SHDSL PHY | Combines DSP, AFE, line driver, hybrid, microcontroller, and memory - eliminates 12+ discrete components and reduces BOM cost by >35% vs. discrete solutions. |
| M-pair functionality | Enables simultaneous use of multiple wire pairs for extended reach or redundancy - supports legacy multi-pair DLC deployments without external switching logic. |
| Tunable hybrid | Digitally adjustable impedance matching adapts to loop length and gauge - improves SNR margin by up to 4 dB over fixed-hybrid alternatives. |
| Integrated HDLC controllers | Four per channel (one per EOC channel) handle frame alignment, CRC, and flag detection - offloads host processor and ensures deterministic EOC latency. |
| Line probing per G.991.2 | Automated loop characterization during startup - determines optimal constellation size, PSD mask, and trellis coding parameters without host intervention. |
Applications
| E1/T1 Replacement | SHDSL Repeater/Regenerator |
|---|---|
Use Scenario: Replacing aging ISDN primary rate access equipment in metro aggregation nodes with modern SHDSL links. IC Role / Device Role / Timing Role: Physical layer transceiver providing G.SHDSL.bis line interface and TDM-to-SHDSL mapping with precise 2.048 MHz clock recovery. Use Value: Enables reuse of existing copper infrastructure while supporting 2× E1 bandwidth (4.096 Mbit/s) with lower power and smaller footprint than legacy FALC-based designs. | Use Scenario: Deploying unattended remote repeaters in rural loop extensions where AC power is unavailable. IC Role / Device Role / Timing Role: Regenerator unit (SRU-C/R) performing signal regeneration, timing retiming, and error correction on degraded SHDSL lines. Use Value: ~500 mW power draw allows solar/battery operation; M-pair support extends usable loop length beyond 12 km on 0.5 mm copper. |
| Digital Loop Carrier (DLC) | SDH/SONET Termination |
Use Scenario: Upgrading legacy DLC systems to support higher-capacity fractional E1 services over extended loops. IC Role / Device Role / Timing Role: Line termination unit (LTU) interfacing with central office TDM switches and adapting to variable loop conditions via real-time probing. Use Value: Tunable hybrid and programmable PSD allow dynamic optimization across diverse subscriber loops without hardware changes. | Use Scenario: Terminating TU-12 payloads from SDH/SONET networks into SHDSL access links for business Ethernet delivery. IC Role / Device Role / Timing Role: Network termination unit (NTU) extracting and mapping 2.048 MHz E1 frames from STM-1 signals with jitter attenuation. Use Value: Integrated framer and HDLC controllers ensure bit-transparent transport of CAS/E&M signaling and OAM channels without external glue logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SHDSL physical layer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PEF 22624 E | 2-channel version, identical architecture and pinout - shares same die with channel count masked. | Used in dual-line repeater cards or compact E1/T1 multiplexers requiring two independent SHDSL ports. | Select when board space permits dual-channel integration and system requires concurrent SHDSL link provisioning. |
| PEF 24624 E | 4-channel version, same package and software compatibility - scales linearly in power (≈2 W total) and I/O count. | Deployed in high-density line cards for central office DSLAMs or multi-service access platforms. | Choose for carrier-grade density requirements where per-channel cost amortization justifies higher initial BOM investment. |
Compared with PEF 22624 E and PEF 24624 E, the PEF 21624 E V2.2-G delivers lowest power and smallest footprint per SHDSL port, making it optimal for space- and energy-constrained edge deployments where only one line interface is needed.
Availability
PEF 21624 E V2.2-G is available at Aetrix Electronics and suitable for SHDSL repeater/regenerator units, E1/T1 replacement systems, and SDH/SONET termination equipment requiring stable component supply across industrial temperature range and long product lifecycle.
Supply support for PEF 21624 E V2.2-G 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 ICs, and wired/wireless communications chips, with global R&D and manufacturing facilities.
The SDFE-4/2/1 product line was designed specifically for cost-sensitive, low-power SHDSL infrastructure - targeting remote repeaters, DLC upgrades, and TDM-to-copper access bridging in telecom and enterprise networks.
FAQ
What is the maximum supported loop length for PEF 21624 E V2.2-G?
The device supports up to 15.5 km on 0.4 mm copper wire under G.SHDSL.bis profile 12, verified per ITU-T G.991.2 Annex A. Actual reach depends on line gauge, noise, and M-pair usage - field measurements show consistent 12 km performance on mixed-gauge loops with tunable hybrid enabled.
Does PEF 21624 E V2.2-G require external memory?
No. The device integrates all necessary program and data memory on-die, including ROM for boot code and SRAM for runtime variables and packet buffering. External memory is not required for basic SHDSL operation or EOC handling.
Can PEF 21624 E V2.2-G operate in NTU mode with synchronous TDM clocking?
Yes. In NTU mode, the device accepts external 2.048 MHz or 1.544 MHz TDM clock via CLKIN and uses it for framer synchronization and jitter attenuation. Internal clock generation is disabled, ensuring phase-coherent mapping of E1/T1 payloads to SHDSL symbols.
Is PEF 21624 E V2.2-G pin-compatible with earlier SDFE-1 revisions?
Yes. PEF 21624 E V2.2-G maintains full pin and software compatibility with prior SDFE-1 versions (e.g., PEF 21624 E V2.1), including identical LBGA-324 footprint, power sequencing, and register map - enabling drop-in replacement in existing designs without layout or firmware changes.
PEF 21624 E V2.2-G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- SOCRATES™
- Package/Case:
- 324-LBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- Symmetrical DSL Front End (SDFE)
- Interface:
- HDLC, Serial, TDM
- Number of Circuits:
- 1
- Voltage - Supply:
- -
- Current - Supply:
- -
- Power (Watts):
- 500 mW
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- P-LBGA-324
PEF 21624 E V2.2-G FAQ
1.How can I place an order for PEF 21624 E V2.2-G through Aetrix?
Please submit a Request for Quotation (RFQ) for PEF 21624 E V2.2-G 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 21624 E V2.2-G reliable?
The price and inventory of PEF 21624 E V2.2-G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PEF 21624 E V2.2-G is usually 5 days.
3.What payment methods are accepted for PEF 21624 E V2.2-G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PEF 21624 E V2.2-G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PEF 21624 E V2.2-G?
PEF 21624 E V2.2-G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PEF 21624 E V2.2-G 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 21624 E V2.2-G?
For technical support, including PEF 21624 E V2.2-G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PEF 21624 E V2.2-G requirements.
6.How does Aetrix verify that PEF 21624 E V2.2-G is sourced from the original manufacturer or authorized distributors?
All PEF 21624 E V2.2-G 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 21624 E V2.2-G meets industry standards.
7.What is the process for return or replacement of PEF 21624 E V2.2-G?
All PEF 21624 E V2.2-G units undergo pre-shipment inspection (PSI). If there is an issue with PEF 21624 E V2.2-G, 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 21624 E V2.2-G part is unused and in its original packaging.
Return procedure for PEF 21624 E V2.2-G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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