SAF82525N-V21

Specialized Overview

The Infineon SAF82525N-V21 is a High-Level Serial Communication Controller Extended (HSCX) designed for implementing high-speed serial communication links using HDLC protocols. It features two independent full-duplex channels, each with dedicated transmit and receive FIFOs of up to 64 bytes depth. The device supports data rates up to 4 Mbit/s and includes on-chip clock generation via an internal oscillator or external sources, along with Digital Phase Locked Loops (DPLL) for clock recovery. It provides protocol support for LAPB, LAPD, SDLC, and HDLC in auto-mode, handling layer-2 functions independently of the host processor. The controller utilizes an 8-bit demultiplexed adaptive bus interface compatible with Intel or Motorola microcontrollers.

Specialized Feature Summary

• Supports two independent full-duplex HDLC channels with integrated link access procedures.
• Includes programmable time-slot assignment and collision resolution for bus configurations.
• Features efficient data transfer through DMA interfaces and interrupt requests.
• Provides flexible serial interface modes including transparent transmission and various data encoding options.

Specialized Applications

• ISDN applications utilizing time division multiplex methods
• Packet switching systems requiring high-level protocol handling
• Time-slot oriented PCM systems

Specialized Procurement Notes

Verify component authenticity by checking markings against official datasheet specifications. Confirm package type matches P-LCC-44-1 requirements. Ensure operating voltage aligns with +5 V supply specifications. Review environmental compliance documentation for RoHS status. Validate revision history to ensure compatibility with existing system designs.

Specialized Selection Notes

Select this controller when designing systems requiring independent handling of multiple serial HDLC channels without heavy CPU overhead. Consider its compatibility with 8-bit and 16-bit microcontroller architectures. Evaluate the need for specific protocol support such as LAPB or LAPD. Assess whether the integrated FIFOs and DMA capabilities meet the required data throughput needs.

Specialized Part Context

The SAF 82525 belongs to the HSCX family, which extends the functionality of the earlier SAB 82520 HSCC. It is part of a series that includes the SAB 82525, SAB 82526, and SAF 82526 variants. These devices are fabricated using advanced ACMOS technology and are designed to reduce hardware and software complexity in serial communication implementations.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers include SAB 82525 N and SAF 82525 N. Verify pinout and software compatibility before substitution. Check for any differences in electrical characteristics or package options between revisions.