مدار مجتمع (آی سی) آی‌سی واسط ارتباطی واسط ویژه

Product Attributes

Introduction

Z16C30 USC Universal Serial Controller is a dual-channel multi-protocol data communications peripheral designed for use with any conventional multiplexed or nonmultiplexed bus. The USC functions as a serial-to-parallel, parallel-to-serial converter/ controller and may be software configured to satisfy a wide variety of serial communications applications. The device contains a variety of new, sophisticated internal functions including two baud rate generators per channel, one digital phase-locked loop (DPLL) per channel, character counters for both receive and transmit in each channel and 32-byte data FIFO’s for each receiver and transmitter. A high speed version of the USC with improved bus bandwidth is offered. CPU bus accesses have been shortened from 160 ns per access to 110 ns per access. The USC has a transmit and receive clock range of up to 10 MHz (20 MHz when using the DPLL, BRG, or CTR) and data transfer rates as high as 10 Mbits/sec full duplex. The USC handles asynchronous formats, synchronous byte-oriented formats.

Features

• Two Independent 0-to-10 Mbps Full-Duplex Channels, each with Two Baud Rate Generators and One digital phase-locked loop (DPLL) for Clock Recovery 32-byte Data FIFO’s for each Receiver and Transmitter
• 110 ns Bus Cycle Time, 16-bit Data Bus Bandwidth
• Multi-Protocol Operation under Program Control with Independent Mode Selection for Receiver and Transmitter Async Mode with 1 to 8 Bits/Character, 1/16 to 2 Stop Bits/Character in 1/16-bit Increments, Programmable Clock Factor, Break Detect and Generation, Odd, Even, Mark, Space or no Parity and Framing Error Detection, Supports One Address/Data Bit and MIL STD 1553B Protocols Byte Oriented Synchronous Mode with One to Eight Bits/Character, Programmable Idle Line Condition, Optional Receive Sync Stripping; Optional Preamble Transmission, 16- or 32-bit CRC, and Transmit-to-Receive Slaving (for X.21) Bisync Mode with 2- to 16-bit Programmable Sync Character, Programmable Idle Line Condition, Optional Receive Sync Stripping, Optional Preamble Transmission, 16- or 32-bit CRC
• Transparent Bisync Mode with EBCDIC or ASCII Character Code, Automatic CRC Handling, Programmable Idle Line Condition, Optional Preamble Transmission, Automatic Recognition of DLE, SYN, SOH, ITX, ETX, ETB, EOT, ENQ, and ITB
• External Character Sync Mode for Receive
• HDLC/SDLC Mode with Eight-Bit Address Compare, Extended Address Field Option, 16- or 32-bit CRC, Programmable Idle Line Condition, Optional Preamble Transmission and Loop Mode
• DMA Interface with Separate Request and Acknowledge for Each Receiver and Transmitter
• Channel Load Command for DMA Controlled Initialization
• Flexible Bus Interface for Direct Connection to Most Microprocessors, User Programmable for 8 or 16 Bits Wide, Directly Supports 680X0 Family or 8X86 Family Bus Interfaces
• Low Power CMOS
• 68-Pin PLCC/100-Pin VQFP Packages