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參數資料
| 型號： | XR16L784 |
| 廠商： | Exar Corporation |
| 英文描述： | HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART |
| 中文描述： | 高性能2.97V至5.5V UART的四 |
| 文件頁數： | 1/52頁 |
| 文件大小： | 625K |
| 代理商： | XR16L784 |
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Exar
Corporation 48720 Kato Road, Fremont CA, 94538
(510) 668-7000
FAX (510) 668-7017
www.exar.com
á
XR16L784
HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART
JUNE 2004
GENERAL DESCRIPTION
REV. 1.2.0
The XR16L784
1
(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.
N
OTE
:
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 TQFP Package (10x10x1.4 mm)
F
IGURE
1. B
LOCK
D
IAGRAM
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
相關PDF資料 |
PDF描述 |
|---|---|
| XR16L78464-TQFP | HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART |
| XR16L784CV | HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART |
| XR16L784IV | HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART |
| XR16L788 | HIGH PERFORMANCE OCTAL UART |
| XR16L788CQ | HIGH PERFORMANCE OCTAL UART |
相關代理商/技術參數 |
參數描述 |
|---|---|
| XR16L784_05 | 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART |
| XR16L784_08 | 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART |
| XR16L78464-TQFP | 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART |
| XR16L784CV | 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART |
| XR16L784CV-0A-EVB | 功能描述:UART 接口集成電路 Supports L784 64 ld TQFP, ISA Interface RoHS:否 制造商:Texas Instruments 通道數量:2 數據速率: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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