參數(shù)資料
型號(hào)： XR16V794IV-F
廠商： Exar Corporation
文件頁(yè)數(shù)： 1/53頁(yè)
文件大?。?/td> 0K
描述： IC UART FIFO 64B QUAD 64LQFP
標(biāo)準(zhǔn)包裝： 160
特點(diǎn)： *
通道數(shù)： 4，QUART
FIFO's： 64 字節(jié)
規(guī)程： RS485
電源電壓： 2.25 V ~ 3.6 V
帶自動(dòng)流量控制功能： 是
帶IrDA 編碼器/解碼器： 是
帶故障啟動(dòng)位檢測(cè)功能： 是
帶調(diào)制解調(diào)器控制功能： 是
安裝類型： 表面貼裝
封裝/外殼： 64-LQFP
供應(yīng)商設(shè)備封裝： 64-LQFP（10x10）
包裝： 托盤(pán)
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com
XR16V794
HIGH PERFORMANCE 2.25V TO 3.6V QUAD UART WITH FRACTIONAL
JULY 2008
REV. 1.0.1
GENERAL DESCRIPTION
The XR16V7941 (794), 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 4 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.
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
FEATURES
2.25V to 3.6V with 5V Tolerant Serial Inputs
Single Interrupt output for all 4 UARTs
A Global Interrupt Source Register for all 4 UARTs
5G “Flat” UART Registers for easier programming
Simultaneous Initialization of all UART channels
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
■ RS485
Half-Duplex
Control
Output
with
Selectable Turn-around Delay
■ Infrared (IrDA 1.0) Data Encoder/Decoder
■ Programmable Data Rate with Prescaler
Up to 8 Mbps Serial Data Rate
Pin compatible to XR16L784. Same 64-pin LQFP
Package (10x10x1.4 mm)
FIGURE 1. BLOCK DIAGRAM
TMRCK
Device
Configuration
Register
s
XTAL1
XTAL2
Crystal Osc/
Buffer
TX0, RX0, DTR0#,
DSR0#, RTS0#,
CTS0#, CD0#, RI0#
Intel or
Motorola
Data
Bus
Interface
TX3, RX3, DTR3#,
DSR3#, RTS3#,
CTS3#, CD3#, RI3#
UART Channel 3
UART Channel 2
UART Channel 1
16-bit
Timer/Counter
UART Channel 0
64 Byte TX FIFO
64 Byte RX FIFO
BRG
IR
ENDEC
TX &
RX
UART
Regs
2.25V to 3.6V VCC
GND
*All Inputs are 5V Tolerant
(Except XTAL1)
RST#
16/68#
ENIR
A7:A0
IOR#
IOW#
CS#
INT#
D7:D0
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR16V798 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL
XR16V798_08 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL
XR16V798IQ 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL
XR16V798IQ-0A-EVB 功能描述:UART 接口集成電路 Supports V798 100 ld QFP,ISA Interface RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR16V798IQ-0B-EVB 功能描述:UART 接口集成電路 Supports V798 100 ld QFP,PCI Interface RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
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