XR17D154 Universal (3.3V and 5V) PCI Bus Quad UART

The XR17D152 (dual) and XR17D154 (quad) and XR17D158 (octal) are industry first UARTs to support both 3.3V and 5V Universal PCI Bus signaling designs. A PCI Bus add-in card designed using one of the Universal PCI UART means the card will operate virtually in any PC system, old with 5V and new at 3.3V. PC Add-in card manufacturers can simply build and ship the Universal PCI cards to the distribution channel or customers without having to concern with slot's VIO voltage compatibility. This multi-channel Universal PCI UART product family is highly integrated and well suited for Universal PCI add-in card solutions. In addition, they support high bandwidth requirements found in communication devices of Point-of-Sale (POS) systems, industrial machineries, computer servers and telecom network management solutions for systems based on PCI Bus, CompactPCI, PMC, VME and PC/104Plus industry standards. These Universal PCI UART devices build on the earlier successful introduction of the 5V devices (XR17C152/154/158, 2/4/8 channels), and 3.3V (XR17L152/154) and will deliver the same product innovations that have been a hallmark of Exar's offerings including: minimized design cycles, increased performance, and acceleration of time-to-market. Product Highlights The new series complies with Universal PCI Bus signaling to support designs for old at 5V and new at 3.3V PCI systems. The three devices meet and support the Universal PCI Bus Target signaling speed of up to 33MHz at 3.3V and 5V. The devices support auto-configuration registers for plug-and-play installation. Their 32-bit global interrupt source register offers an at-a-glance status that is capable of identifying which UART channel's transmitter or receiver has requested service. This feature greatly facilitates interrupt parsing and increases service efficiency, hence, eliminates the conventional approach of individually polling each channel. The Universal PCI UART series is capable of operating 4 times faster in data transfer efficiency by its 32-bit data loading and unloading capability than the traditional ISA (8-bit) bus. In addition, automatic RS-485 direction control with selectable turn-around delay is provided enabling faster polling in 2-wire half-duplex networks. Automatic hardware (RTS/CTS or DTR/DSR) and software flow (Xon/Xoff) control facility is supported to prevent data loss and packet retransmission, hence, increasing throughput.

技术特性

Industry First Universal Board PCI Bus UART
Direct 3.3V and 5V PCI Bus Connection
PCI Bus Target revision 2.3 Signaling Compliant
32-bit Wide Data Read/Write Operation for Higher Data Throughput
Data Burst Operation for Faster Data Loading/Unloading
Global Interrupt Signal Register Increases Driver Efficiency
Each UART has 64-byte TX and RX FIFOs
Programmable TX and RX FIFO Trigger Level and FIFO Level Counters
Automatic RTS/CTS or DTR/DSR Hardware Flow Control
Automatic RS485 Direction Control Output with Selectable turn-around delay
Up to 6.125 MBps Data Rate
Pb-Free, RoHS Compliant Versions Offered

应用领域 APPLICATION

Universal PCI Bus Add-in Cards
Multi Serial Port Solution
Terminal Servers
Point-of-Sale Systems
Factory Automation Management
Process Control Machinery
Data Collection Servers
Systems Monitoring and Management
Ethernet to Serial Ports

技术指标

频道	4
中央处理器接口	PCI Bus 2.2
数据传输速率@5/3.3/2.5V	6.25/4/na
Max Data Rate @ 5/3.3/2.5/1.8V (Mbps)	6.25/4/na/na
发送器/接收器FIFO(Bytes)	64/64
发送器/接收器FIFOCtrs	Yes
Program Trigger Levels	Yes
自动RS-485	Yes
Fractional Baud Rate Gen.	No
Pwr Down Mode	Yes
5VTol输入	Yes
电压供应	3.0-3.6, 4.5-5.5
No. ofGPIOs	8
封装	LQFP-144

功能框图 Functional Block Diagram

订购信息 Ordering Information

器件型号	有害物质限制	最低温度	最高温度	状态	立刻购买	申请样片
XR17D154CV-F		0	70	Active
XR17D154CVTR-F		0	70	Active
XR17D154IV-F		-40	85	Active
XR17D154IVTR-F		-40	85

应用技术支持与电子电路设计开发资源下载	版本信息	大小
XR17D154 数据资料DataSheet下载:pdf	Rev.V2	2 页