Datasheet > 微控制器和处理器 > 串行 IO/通信控制器> XR16L788

XR16L788

更新时间： 2024-09-16 22:41:15

品牌	Logo	应用领域
艾科嘉 - EXAR		/
页数	文件大小	规格书
42页	523K
描述
HIGH PERFORMANCE OCTAL UART

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XR16L788 数据手册

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XR16L788

HIGH PERFORMANCE OCTAL UART

SEPTEMBER 2001

REV. 1.1.4

NEW FEATURES:

GENERAL DESCRIPTION

• 5V and 3.3V 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), formerly XR16L758, is a 5V

and 3.3V with 5V tolerant inputs octal Universal Asyn-

chronous Receiver and Transmitter (UART). The

highly integrated device is designed for high band-

width requirement in communication systems. A new

feature increases device driver efficiency includes a

global interrupt pin with global interrupt source regis-

ters that provide complete and detailed interrupt sta-

tus information for all 8 channels that will speed up in-

terrupt parsing. Other new facilities include simulta-

neous UART registers initialization, individual UART

channel soft-reset, DTR/DSR hardware flow control,

software flow control (Xoff/Xon) detection indicators,

RS-485 half-duplex direction control with programma-

ble turn-around delay, Intel or Motorola bus interface

and sleep mode now has 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

Automatic Xon/Xoff Software Flow Control with Sta-

tus Indicator

Ethernet Network to Serial Ports

Network Management

•

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)

Factory Automation and Process Control

Point-of-Sale Systems

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

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

UART Channel 1

D7:D0

UART Channel 2

UART Channel 3

UART Channel 4

UART Channel 5

Data Bus

Interface

Device

Configuration

Registers

IOR#

IOW #

CS#

INT#

16/68#

UART Channel 6

TX7, RX7, DTR7#,

DSR7#, RTS7#,

UART Channel 7

16-bit

Tim er/Counter

CTS7#, CD7#, RI7#

XTAL1

XTAL2

TM RCK

Crystal Osc/Buffer

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

12 3 4 5 6 7...42

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与XR16L788相关器件

型号	品牌	获取价格	描述	数据表
XR16L788_05	EXAR	获取价格	HIGH PERFORMANCE 2.97V TO 5.5V OCTAL UART
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

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