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Infineon Technologies SAB 82525 N V2.2
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- Part No.:
- SAB 82525 N V2.2
- Manufacturer:
- Infineon Technologies
- Category:
- Specialized
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
SAB 82525 N V2.2.pdf
- Description:
- IC INTERFACE SPECIALIZED 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,115
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Product details
Overview
SAB 82525 N V2.2 from Siemens AG is a dual-channel High-Level Serial Communication Controller Extended (HSCX) IC implementing HDLC/LAPB/LAPD/SDLC Layer-2 protocol handling, featuring two independent 64-byte FIFOs, 4-channel DMA interface, and on-chip DPLL-based clock recovery per channel - used in ISDN terminal adapters and X.25 packet-switching gateways.
For engineers reviewing the SAB 82525 N V2.2 datasheet, SAB 82525 N V2.2 pinout, SAB 82525 N V2.2 application, or SAB 82525 N V2.2 equivalent, key selection criteria include dual-HDLC channel autonomy, programmable time-slot assignment (1–256 bit), 4 Mbit/s max data rate, and P-LCC-44 package compatibility with Intel/Motorola 8/16-bit microprocessor buses.
Technical Context
The SAB 82525 implements full-duplex LAPB/LAPD and half-duplex SDLC-NRM at Layer-2, with hardware-accelerated flag detection, bit stuffing, CRC-16 generation/checking, and address field recognition - offloading CPU-intensive serial link management. Each channel operates independently with dedicated command/status registers and bidirectional 64-byte FIFOs.
Its serial interface supports multiple encoding modes (NRZ, NRZI, FM0, Manchester), external or internal clock sources, and DPLL-based clock recovery for jitter-tolerant operation. The 8-bit demultiplexed adaptive bus interface enables direct integration with Siemens/Intel/Motorola microcontrollers without glue logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Dual independent full-duplex HDLC channels - enables simultaneous ISDN B-channel and D-channel control in single-chip terminal equipment. |
| Data Rate | Up to 4 Mbit/s per channel - supports high-speed PCM time-slot multiplexing and packet-switched backbone interfaces. |
| FIFO Depth | 64 bytes per channel/direction - buffers bursty traffic and decouples serial I/O from CPU bus timing, reducing interrupt load. |
| DMA Channels | 4-channel DMA interface (2 Tx + 2 Rx) - enables zero-CPU-overhead block transfers of up to 32-byte frames using standard system DMA controllers. |
| Encoding Modes | NRZ, NRZI, FM0, Manchester - selectable per channel to match legacy telecom line coding requirements without external converters. |
| Time-Slot Assignment | Programmable per channel (1–256 bit length) - allows precise alignment with TDM structures in PCM-based telephony systems. |
| Power Consumption | 25 mW active / 4 mW standby at 4 MHz - enables low-power remote ISDN terminal designs with battery backup capability. |
Pinout & Package
Package: P-LCC-44 (Plastic Leaded Chip Carrier, 44-pin, surface-mount, JEDEC MO-078AC).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 40, 41, 42, 43, 44 | Data Bus (D0–D7), Address Bus (A0–A6), Control (CS, WR/IC0, RD/IC1) | 8-bit demultiplexed parallel interface compatible with Intel 80C86/80C88 and Motorola 68000-series microprocessors. |
| 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28 | Interrupt & Mode Control (INT, IM1, ALE/IM0, RES) | Configurable interrupt priority and reset synchronization; supports Auto/Non-Auto/Transparent operating modes via MDS1/MDS0/ADM pins. |
| 29, 30, 37, 38, 39 | DMA Interface (DACKA/B, DRQRA/TB, DRQRB/TB) | Four dedicated DMA request/acknowledge lines - enables concurrent DMA servicing for both transmit/receive paths on each channel. |
| 31–36 | Channel Clocks (AxCLKA/B, TxCLKA/B, RxCLKA/B) | Independent clock inputs per channel for transmit, receive, and auxiliary functions - supports asynchronous dual-channel operation with separate timing domains. |
| 34, 35, 36 | Serial I/O (TxDA/B, RxDA/B, RTS/CTS/CD) | Full set of modem control signals per channel - enables hardware flow control and carrier detect handling without external UARTs. |
Key Features
| Feature | Design Value |
|---|---|
| Dual HDLC Protocol Engine | Hardware-accelerated LAPB/LAPD/SDLC frame assembly/disassembly with modulo-8/128 sequencing - eliminates software protocol stack overhead in embedded ISDN stacks. |
| Programmable Time-Slot Mapping | Per-channel time-slot length (1–256 bits) and position assignment - enables direct integration into E1/T1 PCM framing without external time-slot interchange (TSI) hardware. |
| Transparent Mode Operation | Bit-level pass-through without HDLC framing (modes MDS1:MDS0=10, ADM=0/1) - supports proprietary synchronous protocols and legacy telemetry links. |
| On-Chip DPLL | Digital Phase-Locked Loop per channel for clock recovery from incoming serial stream - tolerates ±100 ppm frequency deviation, eliminating external PLL ICs in line-interface designs. |
| Receive Length Check | Configurable minimum/maximum frame length validation before DMA transfer - prevents buffer overflow and malformed packet processing in real-time systems. |
Applications
| ISDN Terminal Adapter | X.25 Packet Switch Gateway |
|---|---|
Use Scenario: Embedded ISDN TE1 device connecting analog PBX to digital ISDN network via BRI interface. IC Role / Device Role / Timing Role: Dual-channel HSCX handles simultaneous D-channel signaling (LAPD) and B-channel data (LAPB), with DPLL recovering clock from line signal. Use Value: Eliminates need for separate UARTs and protocol processors; 64-byte FIFOs absorb jitter during call setup and data bursts. | Use Scenario: Industrial SCADA gateway aggregating serial RTU data into X.25 virtual circuits over leased lines. IC Role / Device Role / Timing Role: Acts as Layer-2 controller for X.25 LAPB framing, CRC checking, and retransmission handling - isolating host CPU from link-layer errors. Use Value: Reduces host firmware complexity; programmable retry timeout and max packet size enforce compliance with regional X.25 network operator policies. |
| PCM-Based Telephony Multiplexer | Legacy Telemetry Concentrator |
Use Scenario: Remote concentrator mapping 32 RS-232 telemetry streams into E1 time-slots for central monitoring. IC Role / Device Role / Timing Role: Time-slot assignment engine with 1–256 bit granularity per channel - maps variable-length serial packets into fixed PCM frames. Use Value: Enables deterministic bandwidth allocation across heterogeneous telemetry sources without statistical multiplexing latency. | Use Scenario: Oil-field RTU transmitting sensor data over long-haul synchronous leased lines using custom bit-oriented framing. IC Role / Device Role / Timing Role: Transparent mode (MDS1:MDS0=10, ADM=0) passes raw bitstreams without flag insertion or CRC - preserving proprietary protocol integrity. Use Value: Avoids protocol translation layers; one-bit insertion and data inversion features compensate for line coding constraints in legacy infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HDLC protocol controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAB 82526 N | Single HDLC channel; identical pinout and software interface but no Channel B resources (N.C. on pins 30, 36, 39) | Cost-optimized ISDN TA designs requiring only D-channel signaling or single-B-channel data path | Select when dual-channel capability is unnecessary - reduces PCB routing complexity and firmware footprint. |
| Siemens SAF 82525 N | Same functionality and pinout; fabricated in radiation-hardened process for industrial/transportation environments | Deployments in rail signaling, power substation automation where extended temperature and EMI tolerance required | Choose for mission-critical infrastructure where AEC-Q100 or EN 5012x compliance is mandated. |
Compared with SAB 82525 N V2.2, the SAB 82526 N reduces channel count and cost for single-link applications, while the SAF 82525 N adds process-level robustness for harsh environments - neither offers enhanced feature set, making the SAB 82525 N optimal for general-purpose dual-channel telecom controller designs.
Availability
SAB 82525 N V2.2 is available at Aetrix Electronics and suitable for ISDN terminal adapters, X.25 packet-switching gateways, and PCM-based telephony multiplexers requiring stable component supply and long-term obsolescence management.
Supply support for SAB 82525 N V2.2 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 until its semiconductor division was spun off in 1999.
The SAB 82525 belongs to Siemens' High-Level Serial Communication Controller (HSCX) product line, designed specifically for embedded telecom infrastructure requiring hardware-accelerated HDLC protocol handling and TDM time-slot flexibility.
FAQ
What operating modes does the SAB 82525 N V2.2 support?
The SAB 82525 N V2.2 supports five distinct operating modes controlled by MDS1, MDS0, and ADM pins: Auto-mode (MDS1:MDS0=00) for full LAPB/LAPD/SDLC; Non-Auto mode (01) for manual frame control; Transparent Mode 0/1 (100/101) for raw bitstream pass-through; and Extended Transparent Modes (11) for cyclic or continuous transmission. Each mode configures different levels of hardware protocol acceleration.
Does the SAB 82525 N V2.2 require an external crystal or oscillator?
No - the SAB 82525 N V2.2 supports both external clock input (via AxCLKA/B pins) and on-chip quartz oscillator circuitry (requiring external crystal connected to OSC1/OSC2 pins per channel). The internal oscillator option eliminates need for external clock generators in cost-sensitive designs, while external clocking enables precise synchronization to network timing references.
How is DMA configured for dual-channel operation?
DMA is configured using four dedicated request/acknowledge pairs: DRQTA/DACKA for Channel A transmit, DRQRA/DACKA for Channel A receive, DRQTB/DACKB for Channel B transmit, and DRQRB/DACKB for Channel B receive. Each pair connects to separate DMA channels on the system controller, enabling concurrent full-duplex transfers without CPU intervention or arbitration conflicts.
Can the SAB 82525 N V2.2 interface directly with RS-232 transceivers?
Yes - the SAB 82525 N V2.2 provides TTL-level serial I/O (TxDA/B, RxDA/B) and modem control signals (RTSA/B, CTSA/B, CDA/B) compatible with standard RS-232 line drivers such as MAX232 or SP3232. No level-shifting logic is required beyond the transceiver IC itself, and RTS/CTS handshaking is fully hardware-managed by the HSCX.
SAB 82525 N V2.2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 44-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- -
- Interface:
- Serial
- Voltage - Supply:
- 4.75V ~ 5.25V
- Supplier Device Package:
- P-LCC-44-1
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
SAB 82525 N V2.2 FAQ
1.How can I place an order for SAB 82525 N V2.2 through Aetrix?
Please submit a Request for Quotation (RFQ) for SAB 82525 N V2.2 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 SAB 82525 N V2.2 reliable?
The price and inventory of SAB 82525 N V2.2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SAB 82525 N V2.2 is usually 5 days.
3.What payment methods are accepted for SAB 82525 N V2.2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SAB 82525 N V2.2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SAB 82525 N V2.2?
SAB 82525 N V2.2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SAB 82525 N V2.2 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 SAB 82525 N V2.2?
For technical support, including SAB 82525 N V2.2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SAB 82525 N V2.2 requirements.
6.How does Aetrix verify that SAB 82525 N V2.2 is sourced from the original manufacturer or authorized distributors?
All SAB 82525 N V2.2 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 SAB 82525 N V2.2 meets industry standards.
7.What is the process for return or replacement of SAB 82525 N V2.2?
All SAB 82525 N V2.2 units undergo pre-shipment inspection (PSI). If there is an issue with SAB 82525 N V2.2, 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 SAB 82525 N V2.2 part is unused and in its original packaging.
Return procedure for SAB 82525 N V2.2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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