Datasheet > XR16L788_05

XR16L788_05

更新时间： 2024-11-07 04:23:31

品牌	Logo	应用领域
艾科嘉 - EXAR		/
页数	文件大小	规格书
54页	1001K
描述
HIGH PERFORMANCE 2.97V TO 5.5V OCTAL UART

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数据手册

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XR16L788_05 数据手册

XR16L788

HIGH PERFORMANCE 2.97V TO 5.5V OCTAL UART

OCTOBER 2005

REV. 1.2.2

FEATURES

GENERAL DESCRIPTION

• 2.97V to 5.5V with 5V Tolerant Inputs Operation

• Single Interrupt Output for all 8 UARTs

• Global Interrupt Source for all 8 UARTs

• 5G “Flat” UART Registers for Configurations

• Simultaneous UART Channels Initialization

The XR16L7881 (788), is a 2.97V to 5.5V with 5V

tolerant inputs octal Universal Asynchronous

Receiver and Transmitter (UART). The highly

integrated device is designed for high bandwidth

requirement in communication systems. The global

interrupt source register provides a complete interrupt

status indication for all 8 channels to speed up

interrupt parsing. Each UART has its own 16C550

compatible set of configuration registers, TX and RX

FIFOs of 64 bytes, fully programmable transmit and

receive FIFO trigger levels, TX and RX FIFO level

counters, automatic RTS/CTS or DTR/DSR hardware

flow control with programmable hysteresis, autoamtic

software (Xon/Xoff) flow control, RS-485 half-duplex

direction control with programmable turn-around

delay, Intel or Motorola bus interface and sleep mode

with a wake-up indicator.

• Auto RS485 Half-duplex Control with Program-

mable Turn-around Delay

• A General Purpose 16-bit Timer/Counter

• Sleep Mode with Wake-up Indication

• Highly Integrated Device for Space Saving

• First eight registers are 16C550 compatible

• 64-byte Transmit and Receive FIFOs

• Transmit and Receive FIFO Level Counters

• Programmable TX and RX FIFO Trigger Levels

• Automatic RTS/CTS or DTR/DSR Flow Control

• Selectable Hardware Flow Control Hysteresis

NOTE: Covered by US patents #5,649,122 and #5,949,787

APPLICATIONS

• Remote Access Servers

• Ethernet Network to Serial Ports

• Network Management

• Factory Automation and Process Control

• Point-of-Sale Systems

• Multi-port RS-232/RS-422/RS-485 Cards

• Automatic Xon/Xoff Software Flow Control with

Status Indicator

• Infrared (IrDA 1.0) Data Encoder/Decoder

• Programmable Data Rate with Prescaler

• Up to 6.25 Mbps Serial Data Rate at 5V

• 100-pin QFP Package (14x20x3 mm)

FIGURE 1. BLOCK DIAGRAM

UART Channel 0

64 Byte TX FIFO

TX0, RX0, DTR0#,

UART

Regs

DSR0#, RTS0#,

CTS0#, CD0#, RI0#

TX & RX

ENDEC

BRG

64 Byte RX FIFO

RST#

A7:A0

D7:D0

UART Channel 1

UART Channel 2

UART Channel 3

UART Channel 4

UART Channel 5

Data Bus

Device

IOR#

IOW#

CS#

Interface

Configuration

Registers

INT#

16/68#

UART Channel 6

TX7, RX7, DTR7#,

DSR7#, RTS7#,

UART Channel 7

16-bit

Timer/Counter

CTS7#, CD7#, RI7#

XTAL1

XTAL2

TMRCK

Crystal Osc/Buffer

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com

12 3 4 5 6 7...54

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与XR16L788_05相关器件

型号	品牌	获取价格	描述	数据表
XR16L788_08	EXAR	获取价格	HIGH PERFORMANCE 2.97V TO 5.5V OCTAL UART
XR16L788CQ	EXAR	获取价格	HIGH PERFORMANCE OCTAL UART
XR16L788CQ-F	EXAR	获取价格	HIGH PERFORMANCE 2.97V TO 5.5V OCTAL UART
XR16L788CQTR	EXAR	获取价格	Serial I/O Controller, PQFP100
XR16L788CQTR-F	EXAR	获取价格	Serial I/O Controller, PQFP100,
XR16L788IQ	EXAR	获取价格	HIGH PERFORMANCE OCTAL UART
XR16L788IQ-F	EXAR	获取价格	HIGH PERFORMANCE 2.97V TO 5.5V OCTAL UART
XR16L788IQTR	EXAR	获取价格	Serial I/O Controller, PQFP100
XR16L788IQTR-F	EXAR	获取价格	Serial I/O Controller, PQFP100
XR16M2550	EXAR	获取价格	HIGH PERFORMANCE LOW VOLTAGE DUART WITH 16-BYTE FIFO

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