参数资料
型号: XR16L784CV-F
厂商: Exar Corporation
文件页数: 1/51页
文件大小: 0K
描述: IC UART 8B 3.3V QUAD 64LQFP
标准包装: 160
特点: *
通道数: 4,QUART
FIFO's: 64 字节
规程: RS485
电源电压: 2.97 V ~ 5.5 V
带自动流量控制功能:
带IrDA 编码器/解码器:
带故障启动位检测功能:
带调制解调器控制功能:
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-LQFP(10x10)
包装: 托盘
其它名称: 1016-1281
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com
XR16L784
HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART
JULY 2008
REV. 1.2.3
GENERAL DESCRIPTION
The
XR16L7841
(784)
is
a
quad
Universal
Asynchronous Receiver and Transmitter (UART). The
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, transmit and receive
FIFOs of 64 bytes, fully programmable transmit and
receive FIFO level triggers, transmit and receive
FIFO level counters, automatic RTS/CTS or DTR/
DSR hardware flow control with programmable
hysteresis,
automatic
software
(Xon/Xoff)
flow
control, IrDA (Infrared Data Association) encoder/
decoder, and a 16-bit general purpose timer/counter.
NOTE: 1 Covered by U.S. 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
2.97V to 5.5V operation with 5V Tolerant Inputs
8-bit Intel or Motorola Data Bus Interface
Single Open Drain Interrupt output for all 4
channels
Global Interrupt Source Registers for all channels
5G (Fifth Generation) “Flat” Register Set
Each UART is Independently Controlled with:
16C550 Compatible Registers
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 RTS Flow Control Hysteresis
Automatic Xon/Xoff Software Flow Control
Automatic RS485 Half-duplex Control Output
with 16 Selectable Turn-around Delay
Infrared (IrDA 1.1) Data Encoder/Decoder
Programmable Data Rate with Prescaler
Up to 3.12 (16x) and 6.25 (8x) Mbps Data Rate
A General Purpose 16-bit Timer/Counter
Sleep Mode with Automatic Wake-up Indicator
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
2.97V to 5.5V VCC
GND
*All Inputs are 5V Tolerant
(Except XTAL1)
784BLK
RST#
16/68#
ENIR
A7:A0
IOR#
IOW#
CS#
INT#
D7:D0
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