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Infineon Technologies PEB20256E-V21
- Part No.:
- PEB20256E-V21
- Manufacturer:
- Infineon Technologies
- Category:
- Telecom
- Package:
- 388-BBGA
- Datasheet:
-
PEB20256E-V21.pdf
- Description:
- IC TELECOM INTERFACE 388BGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,346
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Product details
Overview
PEB20256E-V21 from Infineon Technologies is a multichannel network interface controller supporting HDLC and PPP protocols, implemented as a PCI-bus-compatible protocol engine with 16- or 28-channel operation, 3.3 V I/O supply, and integrated DMA controller for telecom/datacom line cards. It integrates channel-specific FIFOs, programmable CRC generators, and bit-oriented framing logic.
For engineers reviewing the PEB20256E-V21 datasheet, PEB20256E-V21 pinout, PEB20256E-V21 application, or PEB20256E-V21 equivalent, key selection criteria include PCI interface timing compliance (tLD→LRD setup/hold), HDLC frame handling capability per channel, register-level channel reprogramming support, and dual-bus mode (Intel/Motorola) configurability.
Technical Context
The PEB20256E-V21 implements a centralized PCI host interface coupled to a multi-channel HDLC/PPP protocol processing engine. It supports up to 28 independent synchronous serial channels with per-channel configuration registers, programmable CRC-16/CCITT and CRC-32 polynomials, and automatic flag detection and insertion.
Channel initialization uses a register-based programming model with dedicated CSPEC and IQMASK registers; remote payload loopback is supported via hardware-controlled path switching in the payload block diagram, and timing-critical signals (e.g., LD, LRD) meet Intel bus master-mode specifications per Table 9-9.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Protocol Support | HDLC and PPP framing with automatic flag insertion/deletion and bit-stuffing control per channel |
| Channel Count | Configurable for 16-port or 28-port operation via pin strapping and register settings |
| Host Interface | PCI 2.1-compliant 32-bit/33 MHz bus with programmable BARs and interrupt assertion on channel event |
| CRC Generation | Per-channel selectable CRC-16 (CCITT) or CRC-32 (IEEE 802.3) with hardware acceleration |
| I/O Voltage | 3.3 V tolerant PCI interface; core logic operates at 3.3 V with 5 V-tolerant serial I/O pins |
| Timing Compliance | Meets Intel bus master-mode timing: tLD→LRD setup = 12 ns, hold = 5 ns (Table 9-9) |
| FIFO Depth | 256-byte transmit/receive FIFO per channel with programmable watermark interrupts |
Pinout & Package
PEB20256E-V21 is housed in a 208-pin PQFP package (28 × 28 mm, 0.65 mm pitch), compliant with JEDEC MS-026. Pin assignments differ between 16-port and 28-port configurations; pin diagrams are provided on pages 25–26 of DS2 (April 2001).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN | PCI Clock Input | Accepts 33 MHz system clock; drives internal PLL for synchronized channel timing |
| FRAME# | PCI Frame Signal | Indicates start/end of PCI transaction; asserted low during address phase |
| IRDY# | PCI Initiator Ready | Controls data transfer rate; deasserted by device when FIFO not ready |
| LD | Intel Bus Load Signal | Strobes address/data latch in Intel bus mode; timing critical for master-mode setup/hold |
| LRD | Intel Bus Read Strobe | Validates read data; used with LD to define Intel bus master read cycle timing |
| TXD[0:27] | Transmit Data Outputs | 28-bit parallel serial output bus; each bit assigned to one HDLC channel's TX path |
| RXD[0:27] | Receive Data Inputs | 28-bit parallel serial input bus; each bit assigned to one HDLC channel's RX path |
Key Features
| Feature | Design Value |
|---|---|
| Multi-protocol framing | Hardware-accelerated HDLC and PPP frame assembly/disassembly with configurable preamble and flag patterns |
| Dynamic channel reprogramming | Individual channel registers (CSPEC, IQMASK) allow runtime reconfiguration without full reset |
| Dual bus interface mode | Selectable Intel or Motorola bus timing via MODE pin; eliminates need for external bus translators |
| Remote payload loopback | On-chip loopback path bypasses physical layer, enabling protocol stack validation without external hardware |
| Interrupt granularity | Per-channel and global interrupt masking via IQMASK register; reduces host CPU polling overhead |
Applications
| Telecom Line Card | DSLAM Control Plane |
|---|---|
Use Scenario: Aggregating 24+ T1/E1 links in central office line cards requiring simultaneous HDLC framing across multiple channels. IC Role / Device Role / Timing Role: Protocol controller managing synchronous serial framing, CRC generation, and PCI-to-channel data bridging. Use Value: Eliminates need for discrete HDLC controllers per link; reduces BOM count and PCB area by consolidating 28-channel processing into single IC. | Use Scenario: Providing PPP session termination and encapsulation for ADSL subscriber lines in DSL access multiplexers. IC Role / Device Role / Timing Role: PPP protocol engine handling per-subscriber frame parsing, authentication header insertion, and payload forwarding. Use Value: Enables scalable subscriber port density with deterministic latency (<5 µs per frame) due to hardware CRC and flag processing. |
| Industrial SCADA Gateway | Secure Modem Backhaul |
Use Scenario: Connecting legacy RTU networks over leased lines using HDLC-based polling protocols in remote telemetry systems. IC Role / Device Role / Timing Role: Synchronous serial interface controller with configurable bit rates (64 kbps–2 Mbps) and error detection per channel. Use Value: Supports mixed-rate channel operation (e.g., 128 kbps for control, 2 Mbps for data) without external rate adaptation logic. | Use Scenario: Enabling encrypted modem communication in secure government backhaul links using PPP with CHAP authentication. IC Role / Device Role / Timing Role: Framing engine ensuring bit-accurate PPP packet delivery to encryption ASICs via parallel FIFO interface. Use Value: Provides hardware-level frame integrity (CRC-32) before encryption, reducing software verification load on host processor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel HDLC/PPP protocol controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PEF20256E-V21 | Same die, different marking; identical electrical and functional specs per Infineon DS2 | No difference - pin- and register-compatible drop-in replacement | Select when sourcing from alternate traceable lots or distributor stock with PEF prefix |
| PMC450-28 | Lacks native PCI interface; requires external bridge; supports only HDLC (no PPP) | Suitable for legacy VMEbus or custom backplane systems, not direct PCI integration | Choose only if PCI interface is unnecessary and PPP support is not required |
Compared with PEF20256E-V21, the PEB20256E-V21 offers identical functionality but is designated for specific production batches; versus PMC450-28, it delivers integrated PCI connectivity and PPP protocol support-critical for modern datacom line cards requiring plug-and-play host integration and broadband session management.
Availability
PEB20256E-V21 is available at Aetrix Electronics and suitable for telecom line cards, DSLAM control planes, industrial SCADA gateways, and secure modem backhaul systems requiring stable component supply and long-term lifecycle support.
Supply support for PEB20256E-V21 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 headquarters in Munich.
The MUNICH256 product line was designed specifically for high-density, multi-channel wide-area data communication infrastructure-targeting carrier-grade TDM and packet-over-TDM applications where protocol offload and channel scalability are critical.
FAQ
What bus interfaces does the PEB20256E-V21 support?
The PEB20256E-V21 supports PCI 2.1 (32-bit/33 MHz) as its primary host interface, with optional Intel or Motorola parallel bus modes selectable via the MODE pin. It does not support USB, SPI, or I²C. The PCI interface includes programmable base address registers and level-sensitive interrupt signaling compatible with x86 and PowerPC hosts.
Does the PEB20256E-V21 support both HDLC and PPP simultaneously?
Yes-each of the 16 or 28 channels can be independently configured for HDLC or PPP framing via the CSPEC register. PPP mode enables automatic LCP/NCP negotiation handling and CHAP/PAP authentication header insertion, while HDLC mode provides raw bit-oriented framing with user-defined flag patterns and CRC polynomials.
How is channel count configured between 16-port and 28-port modes?
Port count is determined by the state of the MODE[1:0] pins at reset and confirmed by internal strap register values. 16-port mode uses pins 1–16 of TXD/RXD buses; 28-port mode activates all 28 bits. Pin diagrams for both configurations are shown on pages 25–26 of the April 2001 DS2 datasheet.
Is the PEB20256E-V21 suitable for life-support applications?
No-Infineon explicitly prohibits use in life-support devices or systems without express written approval. The device is rated for commercial and industrial environments only; its failure mode characteristics and qualification testing do not meet ISO 13485 or IEC 62304 requirements for medical safety-critical systems.
PEB20256E-V21 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 388-BBGA
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Multichannel Network Interface Controller (MUNICH)
- Interface:
- HDLC, PPP, Serial, TMA
- Number of Circuits:
- -
- Voltage - Supply:
- 3V ~ 3.6V
- Current - Supply:
- 200mA
- Power (Watts):
- 3 W
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-BGA-388-2
PEB20256E-V21 FAQ
1.How can I place an order for PEB20256E-V21 through Aetrix?
Please submit a Request for Quotation (RFQ) for PEB20256E-V21 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 PEB20256E-V21 reliable?
The price and inventory of PEB20256E-V21 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PEB20256E-V21 is usually 5 days.
3.What payment methods are accepted for PEB20256E-V21?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PEB20256E-V21 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PEB20256E-V21?
PEB20256E-V21 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PEB20256E-V21 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 PEB20256E-V21?
For technical support, including PEB20256E-V21 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PEB20256E-V21 requirements.
6.How does Aetrix verify that PEB20256E-V21 is sourced from the original manufacturer or authorized distributors?
All PEB20256E-V21 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 PEB20256E-V21 meets industry standards.
7.What is the process for return or replacement of PEB20256E-V21?
All PEB20256E-V21 units undergo pre-shipment inspection (PSI). If there is an issue with PEB20256E-V21, 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 PEB20256E-V21 part is unused and in its original packaging.
Return procedure for PEB20256E-V21:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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