参数资料
型号: XR17C154IV
厂商: Exar Corporation
文件页数: 1/62页
文件大小: 0K
描述: IC UART PCI BUS QUAD 144LQFP
产品变化通告: Leaded UART, V&I Obsolescence 11/Apr/2011
标准包装: 60
特点: *
通道数: 4,QUART
FIFO's: 64 字节
规程: RS485
电源电压: 5V
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: 144-LQFP
供应商设备封装: 144-LQFP(20x20)
包装: 托盘
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com
xr
XR17C154
5V PCI BUS QUAD UART
AUGUST 2005
REV. 1.3.2
GENERAL DESCRIPTION
The XR17C1541 (154) is a quad PCI Bus Universal
Asynchronous Receiver and Transmitter (UART) with
same package and pin-out as the Exar XR17x158 oc-
tal UARTs. The device is designed to meet today’s
32-bit PCI Bus and high bandwidth requirements in
communication systems. The global interrupt source
register provides a complete interrupt status indica-
tion for all 4 channels to speed up interrupt parsing.
Each UART is independently controlled and has its
own 16C550 compatible 5G register set, transmit and
receive FIFOs of 64 bytes, fully programmable trans-
mit and receive FIFO trigger levels, transmit and re-
ceive FIFO level counters, automatic hardware flow
control with programmable hysteresis, automatic soft-
ware (Xon/Xoff) flow control, IrDA (Infrared Data As-
sociation) encoder/decoder, 8 multi-purpose defin-
able inputs/outputs, and a 16-bit general purpose tim-
er/counter.
NOTE: 1 Covered by U.S. Patents #5,649,122, #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
High Performance Quad UART
PCI Bus 2.2 Target Interface Compliance
5V PCI Bus Compliant up to 33MHz Clock
32-bit PCI Bus Interface with EEPROM Interface
A Global Interrupt Source Register for all 4 UARTs
Data Transfer in Byte, Word and Double-word
Data Read/Write Burst Operation
Each UART is independently Controlled with:
16C550 Compatible 5G (Fifth Gen Register Set
64-byte Transmit and Receive FIFOs
Transmit and Receive FIFO Level Counters
Automatic RTS/CTS or DTR/DSR Flow Control
Automatic Xon/Xoff Software Flow Control
Automatic RS485 Half-duplex Control Output
with 16 Selectable Turn-around Delay
Infrared (IrDA 1.0) Data Encoder/Decoder
Programmable Data Rate with Prescaler
Up to 6.25 Mbps Serial Data Rate at 8X and 5V
Eight Multi-Purpose Inputs/outputs
A General Purpose 16-bit Timer/Counter
Sleep Mode with Automatic Wake-up Indicator
Same Package and Pin-out as the XR17C158,
XR17D154 and XR17D158 UART
20x20x1.4mm 144-LQFP package
FIGURE 1. BLOCK DIAGRAM
TMRCK
Device
Configuration
Registers
XTAL1
XTAL2
Crystal Osc/Buffer
UART Channel 0
TX0, RX0, DTR0#,
DSR0#, RTS0#,
CTS0#, CD0#, RI0#
PCI Local
Bus
Interface
CLK (33MHz)
RST#
AD[31:0]
C/BE[3:0]#
PAR
FRAME#
IRDY#
TRDY#
DEVSEL#
STOP#
IDSEL
PERR#
SERR#
INTA#
Configuration
Space
Registers
.
MPIO0- MPIO7
Multi-purpose
Inputs/Outputs
TX3, RX3, DTR3#,
DSR3#, RTS3#,
CTS3#, CD3#, RI3#
UART Channel 3
UART Channel 2
UART Channel 1
16-bit
Timer/Counter
EECK
EEDI
EEDO
EECS
EEPROM
Interface
64 Byte TX FIFO
64 Byte RX FIFO
BRG
IR
ENDEC
TX & RX
UART
Regs
5V VCC
GND
ENIR
相关PDF资料
PDF描述
XR17C158IV-F IC UART PCI BUS OCTAL 144LQFP
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XR17D154CV-F IC UART PCI BUS QUAD 144LQFP
XR17D158IV-F IC UART PCI BUS OCTAL 144LQFP
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相关代理商/技术参数
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