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  • XR28V384
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XR28V384

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3.3V Quad LPC UART with 128-Byte FIFO

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  • Integrated Circuits (ICs)
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XR28V384 Product Details

The XR28V384 (V384) is a quad Universal Asynchronous Receiver and Transmitter (UART) for the Intel Low Pin Count (LPC) bus interface. This device can replace or supplement a Super I/O device to add additional serial ports to the system. The V384 UARTs support any 16-bit I/O address supported by the system. The register set is based on the industry standard 16550 UART, so the V384 operates with the standard serial port drivers without requiring a custom driver to be installed. The 128 byte Transmit and Receive FIFOs reduce CPU overhead and minimize the chance of buffer overflow and data loss. In addition to the 16550 UART registers, there are also Configuration register set where enhanced features such as the 9-bit (multidrop) mode, IrDA mode and the Watchdog Timer can be enabled.

The is a quad Universal Asynchronous Receiver and Transmitter (UART) for the Intel Low Pin Count (LPC) bus interface. This device can replace or supplement a Super I/O device to add additional serial ports to the system. The V384 UARTs support any 16-bit I/O address supported by the system. The register set is based on the industry standard 16550 UART, so the V384 operates with the standard serial port drivers without requiring a custom driver to be installed. The 128 byte Transmit and Receive FIFOs reduce CPU overhead and minimize the chance of buffer overflow and data loss. In addition to the 16550 UART registers, there are also Configuration register set where enhanced features such as the 9-bit (multidrop) mode, IrDA mode and the Watchdog Timer can be enabled. The V384 is available a 48-pin TQFP package. APPLICATIONS

FEATURES

x 128 Byte Transmit and Receive FIFO x Compliant to LPC 1.1 Specifications to +85�C Industrial Temp Operation x Watchdog Timer with WDTOUT# signal x 4 Independent UART channels

Programmable I/O mapped base addresses Data rates to 3 Mbps Selectable RX FIFO interrupt trigger levels Auto RS-485 Half-Duplex Control mode Programmable character lengths with even, odd, or no parity IrDA mode and separate IRTXA# and IRRXA# pins for the first UART channel 9-bit (Multidrop) mode

x External 24MHz/48MHz clock x Single 3.3V Supply Voltage x 5V tolerant inputs x 48-TQFP package x 7mm)

x Industrial and Embedded PCs x Factory Automation and Process Controls x Network Routers x System Board Designs

Exar Corporation 48720 Kato Road, Fremont CA, (510) 668-7000 FAX (510) 668-7017 www.exar.com

IRTXA# IRRXA# RIA# CDA# TXA/PS_3F8_IRQA RXA DTRA#/PS_3E0_IRQA RTSA#/PS_CONF_2E/RS485 DSRA# CTSA# RIB# CDB# U T# GND LC LK LFR IR Q VCC LK IN

PART NUMBER XR28V384IM48-F XR28V384IM48TR-F PACKAGE 48-Lead TQFP 48-Lead TQFP OPERATING TEMPERATURE RANGE to +85�C DEVICE STATUS Active

CTSD# DSRD# RTSD#/RS485 DTRD# RXD TXD/PS_2E8_IRQD CDD# RID# CTSC# DSRC# RTSC#/PS_CONF_KEY0/RS485 DTRC#/PS_WDT

LPC BUS INTERFACE PCIRST# LAD1 LAD0 LCLK LFRAME# I Active low Reset signal. Multiplexed address / data bus [3:0]. See 'Section 1.2, LPC Bus Interface'. I/O

LPC clock input to 33.3MHz. Active low LPC Frame signal indicates start of a new cycle or termination of a broken cycle. Bi-directional pin for sending interrupts. By default this pin is tri-stated when idle. Interrupts can be active high or low. See 'Section 1.2.1, Serial IRQ' and See 'Section 2.2.1.3, Interrupt Enable Register (IER) - Read/Write' for more information regarding interrupts.

UART I/O INTERFACE CTSD# DSRD# 14 I UART Channel D Clear-to-Send (active low) or general purpose input. This input should be connected to VCC or GND when not used. UART Channel D Data-Set-Ready (active low) or general purpose input. This input should be connected to VCC or GND when not used. UART Channel D Request-to-Send (active low) or general purpose output or Automatic RS485 Half Duplex control pin. See 'Section 1.4.4, Auto RS-485 Half-Duplex Control'. UART Channel D Data-Terminal-Ready (active low) or general purpose output. UART Channel D Receive Data. Normal receive data input must idle at logic 1 condition. This input should be connected to VCC or GND when not used. UART Channel D Transmit Data. The TXD signal will be a logic 1 during reset or idle (no data). it is not used, leave it unconnected. This pin has an internal pull-up resistor and is sampled upon power-up or reset. This will determine the default register settings for UART channel D. The registers can later be modified by the software. See Table 1 'UART Power On Configuration'. UART Channel D Carrier-Detect (active low) or general purpose input. This input should be connected to VCC or GND when not used. UART Channel D Ring-Indicator (active low) or general purpose input. This input should be connected to VCC or GND when not used. UART Channel C Clear-to-Send (active low) or general purpose input. This input should be connected to VCC or GND when not used. UART Channel C Data-Set-Ready (active low) or general purpose input. This input should be connected to VCC or GND when not used.


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    90 days quality guarantee for all products.

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1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.

FAQ:

Q: How does Jotrin guarantee that XR28V384 is the original manufacturer or agent of Exar?
We have a professional business development department to strictly test and verify the qualifications of Exar original manufacturers and agents. All Exar suppliers must pass the qualification review before they can publish their XR28V384 devices; we pay more attention to the channels and quality of XR28V384 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of XR28V384 chips? Including Exar original factory information, application, XR28V384 pictures?
You can use Jotrin's intelligent search engine, or filter by Integrated Circuits (ICs) category, or find it through EXAR Corporation / Maxlinear Information page.
Q: Are the Exar's XR28V384 price and stock displayed on the platform accurate?
The Exar's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for XR28V384, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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Yes. We accept offline orders.
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Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of XR28V384?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the XR28V384 we delivered, we will accept the replacement or return of the XR28V384 only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of XR28V384.
(3)The XR28V384 is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
Q: How to contact us and get support, such as XR28V384 datasheet pdf, XR28V384 pin diagram?
Need any After-Sales service, please feel free contact us: sales@jotrin.com

EXAR Corporation / Maxlinear

EXAR
Exar Corporation delivers highly differentiated silicon, software and subsystem solutions for industrial, datacom and storage applications. Exar's comprehensive knowledge of end-user markets along with the underlying analog, mixed signal and digital technology has enabled innovative solutions that m...
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