Datasheet > XR16V798

XR16V798

更新时间： 2024-11-23 04:23:31

品牌	Logo	应用领域
艾科嘉 - EXAR		/
页数	文件大小	规格书
56页	1317K
描述
HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE

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XR16V798 数据手册

XR16V798

HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE

JANUARY 2006

REV. 1.0.0

FEATURES

GENERAL DESCRIPTION

• 2.25V to 3.6V with 5V Tolerant Serial Inputs

• Single Interrupt output for all 8 UARTs

• A Global Interrupt Source Register for all 8 UARTs

• 5G “Flat” UART Registers for easier programming

• Simultaneous Initialization of all UART channels

The XR16V798 (798), is a 2.25V to 3.6V octal

Universal Asynchronous Receiver and Transmitter

(UART) with 5V tolerant serial (modem) inputs. 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.

• A General Purpose Command-driven 16-bit

Timer/counter

• Sleep Mode with Wake-up Indication

• Highly Integrated Device for Space Saving

• Each UART is independently controlled with:

■ 16C550 Compatible 5G Register Set

■ 64-byte Transmit and Receive FIFOs

■ Fractional Baud Rate Generator

■ Transmit and Receive FIFO Level Counters

■ Programmable TX and RX FIFO Trigger Level

■ Automatic RTS/CTS or DTR/DSR Flow Control

■ Automatic Xon/Xoff Software Flow Control

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

APPLICATIONS

■ RS485 HDX Control Output with Selectable

• Remote Access Servers

Turn-around Delay

• Ethernet Network to Serial Ports

• Network Management

• Factory Automation and Process Control

• Point-of-Sale Systems

■ Infrared (IrDA 1.0) Data Encoder/Decoder

■ Programmable Data Rate with Prescaler

• Up to 8 Mbps Serial Data Rate

• Pin compatible to XR16L788. Same 100-pin QFP

Package (14x20x3 mm)

• 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

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...56

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与XR16V798相关器件

型号	品牌	获取价格	描述	数据表
XR16V798_08	EXAR	获取价格	HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL
XR16V798IQ	EXAR	获取价格	HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE
XR16V798IQ-F	EXAR	获取价格	Serial I/O Controller, PQFP100
XR-1790	ETC	获取价格	Audio Schematic
XR17C152	EXAR	获取价格	5V PCI BUS DUAL UART
XR17C152CM	EXAR	获取价格	5V PCI BUS DUAL UART
XR17C152IM	EXAR	获取价格	5V PCI BUS DUAL UART
XR17C154	EXAR	获取价格	5V PCI BUS QUAD UART
XR17C154_05	EXAR	获取价格	5V PCI BUS QUAD UART
XR17C154CV	EXAR	获取价格	5V PCI BUS QUAD UART

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