Datasheet > XR20V2172

XR20V2172

更新时间： 2024-01-28 22:31:09

品牌	Logo	应用领域
艾科嘉 - EXAR		先进先出芯片
页数	文件大小	规格书
51页	1107K
描述
TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER

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XR20V2172 数据手册

PRELIMINARY

XR20V2172

TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER

FEBRUARY 2007

REV. P1.0.1

FEATURES

GENERAL DESCRIPTION

• Selectable I²C/SPI Interface

The XR20V2172 (V2172) is a high performance two

channel universal asynchronous receiver and

transmitter (UART) with 64 byte TX and RX FIFOs, a

• Meets true EIA/TIA-232-F Standards from +3.3V to

+5.5V operation

selectable I²C/SPI slave interface and RS232

transceiver. The V2172 operates from 3.3 to 5.5 volts.

The enhanced features in the V2172 include a

programmable fractional baud rate generator, an 8X

and 4X sampling rate that allows for a maximum baud

rate of 1 Mbps at 3.3V. The standard features include

16 selectable TX and RX FIFO trigger levels,

automatic hardware (RTS/CTS) and software (Xon/

Xoff) flow control, and a complete modem interface.

Onboard registers provide the user with operational

status and data error flags. An internal loopback

capability allows system diagnostics. The V2172 is

available in the 64-pin QFN.

• Data rate up to 1 Mbps

• 45us sleep mode exit (charge pump to full power)

• ESD protection for RS-232 I/O pins at

■ +/-15kV - Human Body Model

■ +/-15kV - IEC 1000-4-2, Air-Gap Discharge

■ +/- 8kV - IEC 1000-4-2, Contact Discharge

• Full-featured UART

■ Fractional Baud Rate Generator

■ Transmit and Receive FIFOs of 64 bytes

■ 16 Selectable TX and RX FIFO Trigger Levels

■ Automatic Hardware (RTS/CTS) Flow Control

■ Automatic Software (Xon/Xoff) Flow Control

■ Halt and Resume Transmission Control

■ Automatic sleep mode

NOTE: 1 Covered by U.S. Patent #5,649,122

APPLICATIONS

• Portable Appliances

• Battery-Operated Devices

• Cellular Data Devices

■ General Purpose I/Os

■ Full modem interface

• Factory Automation and Process Controls

• 64-QFN packages

FIGURE 1. XR20V2172 BLOCK DIAGRAM

VREF+

Crystal

Osc/Buffer

BRG

64 Byte

TX & RX

FIFO

Charge Pump

IRQ#

VREF-

TXDA

RESET#

TXA

RXA

RXDA

RTSA#

RTSA

DTRA#

CTSA#

DTRA

CTSA

I2C/SPI#

SDA

Modem

I/Os

DSRA#

RIA#

DSRA

RIA

SCK

CDA#

CDA

Channel A

Ch A Transceiver

A0/CSA#

A1/SI

CDB#

RIB#

CDB

RIB

DSRB#

CTSB#

DTRB#

RTSB#

TXB

DSRB

CTSB

DTRB

RTSB

TXDB

RXDB

TXB

Channel B

Transceiver

RXB

RXB_SEL

RXB

UART

RS-232 Transceiver

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com

12 3 4 5 6 7...51

中文翻译

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与XR20V2172相关器件

型号	品牌	获取价格	描述	数据表
XR20V2172_08	EXAR	获取价格	TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER
XR20V2172IL64	EXAR	获取价格	TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER
XR20V2172IL64-F	EXAR	获取价格	暂无描述
XR20V2172IL64TR-F	EXAR	获取价格	Line Transceiver, 2 Func, 2 Driver, 2 Rcvr, CMOS, 9 X 9 MM, 0.90 MM HEIGHT, GREEN, QFN-64
XR-210	EXAR	获取价格	FSK MODULATOR / DEMODULATOR
XR-2100CJ	ETC	获取价格	MODEM
XR-2100CP	ETC	获取价格	MODEM
XR-2103	EXAR	获取价格	FSK Modem Filter
XR-2103A	EXAR	获取价格	FSK Modem Filter
XR-2103ACN	EXAR	获取价格	FSK Modem Filter

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