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HD68562 Datasheet Dual Universal Serial Communications Controller

Manufacturer: Hitachi Semiconductor (now Renesas)

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Overview

HD68562 DUSCC (Dual Universal Serial Communications Controller) The HD68562 Dual Universal Serial Communications Controller (DUSCC) transforms parallel data which is transferred from central processing unit into serial data_ It is a single chip MOS-LSI communications device designed to be a foundation of universal high-performance data-communication subsystems, particularly for the 68000 family microprocessors_ The DUSCC provides two independent, multi-protocol, full duplex receiver/transmitter channels in a single package_ Since the DUSCC supports a wide range of protocols, it handles data communications with the minimum intervention, usually just a few commands from its host processor.

The controller's data rate is maximum 4M bits/s which meets the requirement of the presently most powerful systems.

A high-speed, high-performance communication system is realized with minimum extemallogic at low cost through a variety of functions prOvided by the chip: 16-bit multi-function counter/timer, a digital phase locked loop (DPLL), a parity/CRC generator and checker, and baud rate generator.

Key Features

  • S.
  • Channel data rate: 4M bps maximum.
  • Receiver/Transmitter: Two channels, dual full-duplex syn- synchronous/asynchronous.
  • MUlti-protocol BOP (Bit Oriented Protocol) operation: BCP (Byte Controlled Protocol) COP (Character Oriented Protocol) ASYNC (Asynchronous).
  • High data transfer efficiency: Four-character receiver/transmitter FIFOs.
  • Parity and FCS (Frame Check Sequence): VRC, LRC-8, CRC-16, CRC-CCITT.
  • Programmable data encoding/decoding: NR.

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