Datasheet > XR16M2651

XR16M2651

更新时间： 2024-11-07 04:23:31

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	1185K
描述
HIGH PERFORMANCE DUART WITH 32-BYTE FIFO AND POWERSAVE FEATURE

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XR16M2651 数据手册

XR16M2651

HIGH PERFORMANCE DUART WITH 32-BYTE FIFO AND POWERSAVE FEATURE

MAY 2007

REV. 1.0.2

FEATURES

GENERAL DESCRIPTION

• 1.62 to 3.63 Volt Operation

The XR16M2651 (M2651) is a high performance

dual universal asynchronous receiver and transmitter

(UART) with 32 byte TX and RX FIFOs. The device

operates from 1.62 to 3.63 volts and is pin-to-pin and

software compatible to the XR16V2551 and

• Pin-to-pin and software compatible to Exar’s

XR16L2551, XR16V2551 and XR16M2551

• Two independent UART channels

■ Register set is 16550 compatible

XR16L2551. The device includes

2 additional

capabilities over the XR16M2650: Intel and Motorola

data bus selection and a “PowerSave” mode to

minimize the sleep current. It supports Exar’s

enhanced features of selectable FIFO trigger level,

automatic hardware (RTS/CTS) and software flow

control, and a complete modem interface. An internal

loopback capability allows system diagnostics.

Independent programmable fractional baud rate

generators are provided in each channel to select

data rates up to 16 Mbps at 3.3 Volt with 4X sampling

clock. The M2651 is available in 48-pin TQFP and 32-

pin QFN packages.

■ Data rate of up to 16 Mbps at 3.3 V

■ Data rate of up to 12.5 Mbps at 2.5 V

■ Data rate of up to 8 Mbps at 1.8V

■ Fractional Baud Rate Generator

■ Transmit and Receive FIFOs of 32 bytes

■ Selectable TX and RX FIFO Trigger Levels

■ Automatic Hardware (RTS/CTS) Flow Control

■ Automatic Software (Xon/Xoff) Flow Control

■ Wireless Infrared (IrDA 1.0) Encoder/Decoder

■ Automatic sleep mode with wake-up interrupt

■ Full modem interface

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

APPLICATIONS

• PowerSave Feature reduces sleep current to 15 µA

• Device Identification and Revision

• Portable Appliances

• Telecommunication Network Routers

• Ethernet Network Routers

• Crystal oscillator (up to 24MHz) or external clock

(up to 64MHz) input

• 48-TQFP and 32-QFN packages

• Cellular Data Devices

• Factory Automation and Process Controls

FIGURE 1. XR16M2651 BLOCK DIAGRAM

1.62 to 3.63V VCC

GND

PwrSave

A2:A0

D7:D0

UART Channel A

IOR# (VCC)

IOW# (R/W#)

CSA# (CS#)

TXA, RXA, DTRA#,

32 Byte TX FIFO

UART

Regs

DSRA#, RTSA#,

CTSA#, CDA#, RIA#,

OP2A#

TX & RX

ENDEC

CSB# (A3)

BRG

INTA (IRQ#)

32 Byte RX FIFO

INTB (logic 0)

TXB, RXB, DTRB#,

DSRB#, RTSB#,

CTSB#, CDB#, RIB#,

OP2B#

TXRDYA#

TXRDYB#

RXRDYA#

RXRDYB#

UART Channel B

(same as Channel A)

Intel or

Motorola

Data Bus

Interface

XTAL1

XTAL2

Reset (Reset#)

16/68#

Crystal Osc/Buffer

CLKSEL

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XR16M2651相关器件

型号	品牌	获取价格	描述	数据表
XR16M2651IL32	EXAR	获取价格	HIGH PERFORMANCE DUART WITH 32-BYTE FIFO AND POWERSAVE FEATURE
XR16M2651IL32-F	EXAR	获取价格	Serial I/O Controller, 2 Channel(s), 2MBps, CMOS, 5 X 5 MM, 0.90 MM HEIGHT, GREEN, QFN-32
XR16M2651IM48	EXAR	获取价格	HIGH PERFORMANCE DUART WITH 32-BYTE FIFO AND POWERSAVE FEATURE
XR16M2651IM48-F	EXAR	获取价格	Serial I/O Controller, 2 Channel(s), 2MBps, CMOS, PQFP48, 7 X 7 MM, 1 MM HEIGHT, GREEN, TQ
XR16M2750	EXAR	获取价格	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
XR16M2750IL32	EXAR	获取价格	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
XR16M2750IL32-F	EXAR	获取价格	Serial I/O Controller, 1 Channel(s), 1MBps, CMOS, 5 X 5 MM, 0.90 MM HEIGHT, GREEN, QFN-32
XR16M2750IM48	EXAR	获取价格	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
XR16M2750IM48-F	EXAR	获取价格	1.62V TO 3.63V HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
XR16M2751	EXAR	获取价格	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO AND POWERSAVE

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