SAB82538 Datasheet, PDF (7/253 Pages) Infineon Technologies AG – ICs for Communications

General Information
Introduction
The Enhanced Serial Communication Controller ESCC8 (SAB 82538) is a data
communication device with eight serial channels. It has been designed to implement
high-speed communication links and to reduce hardware and software overhead
needed for serial synchronous/asynchronous communications.
Each channel contains an independent clock generator, DPLL, encoder/decoder and a
programmable protocol part. Data communication with asynchronous, synchronous
character oriented, and HDLC based protocols with extended support of X.25 “0”, the
ISDN “0”, and SDLC protocols is implemented. Like the dual channel ESCC2
(SAB 82532) the ESCC8 is capable of handling a large set of layer-2 protocol functions
independently of the host processor.
The version 82538H-10 of the Enhanced Serial Communication Controller (ESCC8)
opens a wide area for applications which use time division multiplex methods (e.g. time-
slot oriented PCM systems, systems designed for packet switching, ISDN applications)
by its programmable telecom-specific features. Specifically in one of its timing modes
(clock mode 5), which is applicable to all serial modes (HDLC/SDLC, ASYNC, BISYNC),
the ESCC8 can transmit or receive data packets in one of up to 64 time-slots of
programmable width.
The device is controlled via a parallel 16-bit wide interface which is directly compatible
with the most popular 8/16 bit microprocessors (Siemens/Intel or Motorola type). The
internal FIFOs (64 bytes per direction and channel) with additional DMA capability
provide a powerful interface to the higher layers implemented in a microcontroller. For
interrupt controlled systems, the ESCC8 supports daisy chaining and interrupt vector
generation.
The ESCC8 is fabricated using Siemens advanced CMOS technology and is available
in a P-MQFP-160 package.
Applications
q Universal, multiprotocol communication boards
q Asynchronous and synchronous terminal cluster controllers
q LAN gateways and bridges
q Multiplexers, cross-connect points, DMI boards
q Time slotted packet networks
q Packet switches, packet assemblers/disassemblers
Semiconductor Group
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