SAB 82525 H V2.2

Specialized Overview

The Infineon Technologies SAB 82525 H V2.2 is a High-Level Serial Communication Controller Extended (HSCX) fabricated using advanced ACMOS technology. It features two independent full-duplex HDLC channels and supports data rates up to 4 Mbit/s. The device includes on-chip clock generation, DPLL for clock recovery, and 64-byte FIFOs per channel and direction. It provides an 8-bit demultiplexed adaptive bus interface compatible with Intel or Motorola microcontrollers. Power consumption is specified at 25 mW active and 4 mW standby at 4 MHz. The component is housed in a P-MQFP-44-2 surface-mount package.

Specialized Feature Summary

• Supports Full-Duplex LAPB/LAPD/SDLC/HDLC protocols with modulo 8 or 128 operation
• Includes integrated Digital Phase Locked Loop (DPLL) for clock recovery
• Features programmable time-slot assignment and collision resolution support
• Provides direct DMA interface for efficient block data transfer

Specialized Applications

• ISDN applications utilizing time division multiplex methods
• Packet switching systems requiring high-speed serial communication
• Time-slot oriented PCM system implementations

Specialized Procurement Notes

Verify the specific ordering code Q67101-H6482 to confirm the P-MQFP-44-2 package variant. Ensure compatibility with the host processor's bus mode requirements by checking IM1 pin strapping options. Confirm that the supply voltage range aligns with the +5V specification provided in the datasheet electrical characteristics section before finalizing procurement.

Specialized Selection Notes

Select this controller when implementing HDLC protocols with reduced CPU overhead. The dual-channel architecture suits applications requiring simultaneous serial links. Verify that the host system supports the required 8-bit bus interface and DMA capabilities. Consider the power consumption specifications if thermal management is critical for the target enclosure design.

Specialized Part Context

This component belongs to the Siemens/Infineon HSCX family, designed as an extension of the SAB 82520. It offers enhanced functionality compared to standard HDLC controllers by integrating layer-2 protocol handling directly on-chip. The HSCX variant specifically targets high-speed synchronous communications, decoupling serial interfaces from the system bus via internal FIFOs to minimize dynamic load.

Specialized Replacement Considerations

The SAB 82526 N serves as a functional substitute for single-channel applications, though it lacks the second channel found in the SAB 82525. Verify software compatibility and pin configuration differences between the P-LCC-44-1 and P-MQFP-44-2 packages during replacement planning.