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Infineon Technologies PEF 2054 N V2.1
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- Part No.:
- PEF 2054 N V2.1
- Manufacturer:
- Infineon Technologies
- Category:
- Telecom
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
PEF 2054 N V2.1.pdf
- Description:
- IC TELECOM INTERFACE 44LCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
PEF 2054 N V2.1 from Siemens AG is an EPIC®-S Extended PCM Interface Controller IC designed for Layer-1 signal processing in ISDN digital line cards. It supports configurable PCM and CFI interfaces, 32-channel time-slot switching, preprocessed D-channel handling, and synchronous data transfer with ≤1.5 µs switching delay. Used in telecom central office and remote terminal systems requiring deterministic TDM channel routing.
For engineers reviewing the PEF 2054 N V2.1 datasheet, PEF 2054 N V2.1 pinout, PEF 2054 N V2.1 application, or PEF 2054 N V2.1 equivalent, key selection criteria include PCM frame alignment flexibility (PBNR register), dual-interface time-slot assignment (CFI–PCM mapping), upstream/downstream offset control (POFD/POFU), and integrated D-channel preprocessing for BRI/PRI signaling stacks.
Technical Context
The PEF 2054 N V2.1 implements a dual-bus architecture with independent PCM and Configurable Interface (CFI) controllers, enabling simultaneous TDM stream handling. Its memory-mapped register set includes dedicated PCM-mode (PMOD), bit-number (PBNR), and offset registers (POFD/POFU) for precise frame synchronization and slot positioning.
It features hardware-accelerated switching via control memory (CM) and data memory (DM) with tristate field support, plus dedicated handlers for monitor/feature (MF) and control/signaling (CS) channels. All operations are synchronized to a master clock with programmable phase shift (PCSR register).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Interface Type | Extended PCM + Configurable Interface (CFI) dual-TDM controller for ISDN BRI/PRI layer-1 transport |
| Channel Capacity | 32 time slots per PCM frame; supports full-duplex switched channel routing with subchannel granularity |
| Switching Latency | ≤1.5 µs internal path delay for PCM-to-CFI or CFI-to-PCM time-slot transfers |
| Register Address Space | 256-byte memory-mapped I/O space including PCM-mode (PMOD), offset (POFD/POFU), and bit-shift (PCSR/CBSR) registers |
| Memory Structure | Dedicated 256-word Control Memory (CM) and 256-word Data Memory (DM), each with tristate code field for bus arbitration |
| Reset Behavior | Hardware reset initializes all registers to default values and clears CM/DM contents; EPIC® initialization sequence required for functional operation |
Pinout & Package
PEF 2054 N V2.1 is housed in a 100-pin plastic quad flat package (QFP) with 0.65 mm pitch, compliant with JEDEC MS-026. Pin functions are defined per the Siemens User's Manual 02.97, Section 1.2–1.3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK | Master Clock Input | Accepts 16.384 MHz or 2.048 MHz reference; drives internal state machines and PCM frame timing |
| RST | Active-Low Hardware Reset | Asynchronous reset that clears registers and memory; requires ≥100 ns pulse width |
| PCM_CLK | PCM Interface Clock Output | Provides bit-synchronous clock derived from CLK; phase-adjustable via PCSR register |
| PCM_FS | PCM Frame Sync Output | Generates frame-sync pulse aligned to PCM frame boundary; polarity and width programmable |
| CFI_DIN / CFI_DOUT | Configurable Interface Data I/O | Bidirectional serial data port supporting multiple framing formats (e.g., HDLC, transparent, bit-oriented) |
| INT | Interrupt Request Output | Open-drain active-low signal indicating FIFO full, timer expiry, or status change per ISTA register |
Key Features
| Feature | Design Value |
|---|---|
| Programmable PCM Frame Alignment | Adjustable downstream/upstream offsets (POFD/POFU) enable precise slot insertion/extraction across asynchronous PCM streams |
| Dual-Interface Time-Slot Mapping | CFI–PCM crosspoint switching allows dynamic assignment of any CFI subchannel to any PCM time slot without CPU intervention |
| Preprocessed D-Channel Handling | Integrated CS handler manages BRI D-channel (16 kbps) or PRI D-channel (64 kbps) signaling with automatic CRC and HDLC framing |
| Synchronous Transfer Utility | STDA/STDB registers enable burst-mode DMA-like transfers between microprocessor and internal memories with address auto-increment |
| Monitor/Feature Channel Support | MFAIR/MFSAR registers provide hardware-assisted MF channel access for diagnostics, loopback, and feature activation in line cards |
Applications
| Digital Line Card (BRI) | Digital Line Card (PRI) |
|---|---|
|
Use Scenario: Residential ISDN BRI termination in remote access servers or DSLAM line cards. IC Role / Device Role / Timing Role: Layer-1 TDM controller managing two B-channels (64 kbps each) and one D-channel (16 kbps) with HDLC framing and CRC validation. Use Value: Offloads D-channel protocol processing from host CPU and enables zero-latency B-channel switching between PCM and CFI interfaces. |
Use Scenario: Central office PRI line interface unit handling 23 B-channels and 1 D-channel per T1 span. IC Role / Device Role / Timing Role: Synchronized PCM frame processor with configurable bit numbering (PBNR) to align with T1 (193-bit) or E1 (256-bit) framing. Use Value: Eliminates external glue logic for time-slot reordering and provides hardware-based D-channel preprocessing for SS7 signaling stacks. |
| Packet Handler Gateway | Analog Line Card Bridge |
|
Use Scenario: ISDN-to-IP gateway aggregating multiple BRI lines into packetized voice streams. IC Role / Device Role / Timing Role: Synchronous transfer utility (STDA/STDB) moves PCM samples directly to packet engine DMA buffers with minimal CPU overhead. Use Value: Enables deterministic sample delivery to VoIP encoder with ≤1.5 µs jitter bound, preserving voice quality in real-time applications. |
Use Scenario: Hybrid analog/digital line card converting POTS signals to ISDN B-channel format. IC Role / Device Role / Timing Role: PCM interface synchronizes with CODEC sampling clock while CFI handles serial data from analog front-end ASICs. Use Value: Allows seamless integration of legacy analog circuitry with digital ISDN infrastructure using single-chip TDM bridging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar extended PCM interface controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PEF 2055 V2.1 | Enhanced version with expanded control memory (512 words vs. 256), additional CFI subchannel registers, and extended timer resolution | Required for PRI applications needing >32 simultaneous switched channels or multi-D-channel support | Select PEF 2055 when system scalability beyond 32 time slots or dual-D-channel handling is needed |
| PEB 2054 V1.0 | PIN-compatible predecessor with identical package and core functionality but lacks CFI bit-shift (CBSR) and subchannel (CSCR) registers | Supports only basic PCM–CFI mapping; no subchannel-level switching or advanced loopback modes | Choose PEB 2054 only for legacy designs where V2.1 features are unused and cost sensitivity outweighs future upgrade path |
Compared with PEF 2054 N V2.1, the PEF 2055 offers higher memory depth and finer CFI control for scalable PRI systems, while the PEB 2054 sacrifices subchannel flexibility for simpler BRI implementations - selection depends on required D-channel preprocessing depth and time-slot routing complexity.
Availability
PEF 2054 N V2.1 is available at Aetrix Electronics and suitable for digital line cards, ISDN gateways, and telecom infrastructure equipment requiring stable component supply and long-term lifecycle support.
Supply support for PEF 2054 N 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
Siemens AG Semiconductor Group (now Infineon Technologies) was a leading European semiconductor manufacturer specializing in industrial, automotive, and telecommunications ICs before its semiconductor division spun off in 1999.
The EPIC®-S product line-including PEF 2054-was engineered specifically for ISDN Layer-1 signal processing in digital access networks, emphasizing deterministic TDM switching, low-latency D-channel handling, and flexible interface synchronization.
FAQ
What clock frequencies does the PEF 2054 N V2.1 support?
The device accepts a master clock input of either 16.384 MHz (for E1-aligned operation) or 2.048 MHz (for direct D-channel timing). Internal dividers generate PCM_CLK and CFI_CLK signals; phase alignment is adjustable via the PCM-Clock Shift Register (PCSR) to compensate for board-level skew.
How does the PEF 2054 N V2.1 handle D-channel signaling in BRI applications?
It integrates a dedicated Control/Signaling (CS) Handler that performs automatic HDLC framing, CRC-16 generation/checking, and flag detection on the 16 kbps D-channel. Configuration is done through MFSAR and CIFIFO registers, enabling autonomous D-channel processing without continuous CPU polling.
Can the PEF 2054 N V2.1 operate with both T1 and E1 PCM formats?
Yes - the Bit Number per PCM-Frame (PBNR) register configures frame length from 8 to 256 bits, supporting T1 (193-bit) and E1 (256-bit) standards. The PCM-Offset registers (POFD/POFU) allow fine-grained alignment to match frame boundaries across asynchronous links.
Is external memory required for PEF 2054 N V2.1 operation?
No - all required memory is embedded: 256-word Control Memory (CM) for switch configuration and 256-word Data Memory (DM) for sample storage. External memory is only needed if the host microprocessor uses the Synchronous Transfer Utility (STDA/STDB) to move bulk data beyond internal capacity.
PEF 2054 N V2.1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- EPIC®
- Package/Case:
- 44-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- PCM Interface Controller
- Interface:
- ISDN, PCM
- Number of Circuits:
- 1
- Voltage - Supply:
- 5V
- Current - Supply:
- 9.5mA
- Power (Watts):
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- P-LCC-44-1
PEF 2054 N V2.1 FAQ
1.How can I place an order for PEF 2054 N V2.1 through Aetrix?
Please submit a Request for Quotation (RFQ) for PEF 2054 N 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 2054 N V2.1 reliable?
The price and inventory of PEF 2054 N 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 2054 N V2.1 is usually 5 days.
3.What payment methods are accepted for PEF 2054 N V2.1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PEF 2054 N V2.1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PEF 2054 N V2.1?
PEF 2054 N V2.1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PEF 2054 N 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 2054 N V2.1?
For technical support, including PEF 2054 N V2.1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PEF 2054 N V2.1 requirements.
6.How does Aetrix verify that PEF 2054 N V2.1 is sourced from the original manufacturer or authorized distributors?
All PEF 2054 N 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 2054 N V2.1 meets industry standards.
7.What is the process for return or replacement of PEF 2054 N V2.1?
All PEF 2054 N V2.1 units undergo pre-shipment inspection (PSI). If there is an issue with PEF 2054 N 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 2054 N V2.1 part is unused and in its original packaging.
Return procedure for PEF 2054 N V2.1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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