Datasheet > XR16M2751

XR16M2751

更新时间： 2024-11-22 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
52页	1115K
描述
HIGH PERFORMANCE DUART WITH 64-BYTE FIFO AND POWERSAVE

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XR16M2751 数据手册

PRELIMINARY

HIGH PERFORMANCE DUART WITH 64-BYTE FIFO AND POWERSAVE

XR16M2751

JUNE 2007

P1.0.0

FEATURES

GENERAL DESCRIPTION

• 1.62 to 3.6 Volt Operation

The XR16M2751 (M2751) is a high performance

• Pin-to-pin compatible to Exar’s XR16V2751 in the

dual universal asynchronous receiver and transmitter

(UART) with 64 byte TX and RX FIFOs. The device

operates from 1.62 to 3.6 volts and is pin-to-pin and

software compatible to Exar’s XR16V2751. The

device includes 2 additional capabilities over the

XR16M2750: Intel and Motorola data bus selection

and a “PowerSave” mode to further reduce sleep

current to a minimum during sleep mode. It supports

the Exar’s enhanced features of programmable FIFO

trigger level and FIFO level counters, automatic

hardware (RTS/CTS) and software flow control,

automatic RS-485 half duplex direction control output

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 8 Mbps at 3.3 Volt and 8X sampling

clock. The M2751 is available in a 48-pin TQFP

package.

48-TQFP package

• Two independent UART channels

■ Register set identical to 16V2751

■ Data rate of up to 8 Mbps at 3.3 V, and 6.25

Mbps at 2.5 V and 4 Mbps at 1.8 V with 8X

sampling rate

■ Fractional Baud Rate Generator

■ Transmit and Receive FIFOs of 64 bytes

■ Programmable TX and RX FIFO Trigger Levels

■ Transmit and Receive FIFO Level Counters

■ Automatic Hardware (RTS/CTS) Flow Control

■ Selectable Auto RTS Flow Control Hysteresis

■ Automatic Software (Xon/Xoff) Flow Control

■ Automatic RS-485 Half-duplex Direction

Control Output via RTS#

■ 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 and #5,949,787

APPLICATIONS

• PowerSave Feature reduces sleep current to 15

µA

• Portable Appliances

• Telecommunication Network Routers

• Ethernet Network Routers

• Cellular Data Devices

• Device Identification and Revision

• Crystal oscillator (up to 32MHz) or external clock

(up to 64MHz) input

• Factory Automation and Process Controls

• 48-TQFP package

FIGURE 1. XR16M2751 BLOCK DIAGRAM

1.62 to 3.6V VCC

GND

PwrSave

A2:A0

D7:D0

UART Channel A

IOR# (VCC)

TXA, RXA, DTRA#,

IOW# (R/W#)

64 Byte TX FIFO

UART

Regs

DSRA#, RTSA#,

DTSA#, CDA#, RIA#,

OP2A#

CSA# (CS#)

CSB# (A3)

ENDEC

TX & RX

BRG

INTA (IRQ#)

INTB (logic 0)

64 Byte RX FIFO

TXB, RXB, DTRB#,

DSRB#, RTSB#,

CTSB#, CDB#, RIB#,

OP2B#

TXRDYA#

TXRDYB#

RXRDYA#

RXRDYB#

Intel or

UART Channel B

(same as Channel A)

Motorola

Data Bus

Interface

XTAL1

XTAL2

Reset (Reset#)

16/68#

Crystal Osc/Buffer

CLKSEL

HDCNTL#

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

12 3 4 5 6 7...52

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与XR16M2751相关器件

型号	品牌	获取价格	描述	数据表
XR16M2751_07	EXAR	获取价格	1.62V TO 3.63V HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
XR16M2751IM48	EXAR	获取价格	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO AND POWERSAVE
XR16M2752	EXAR	获取价格	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
XR16M2752_07	EXAR	获取价格	1.62V TO 3.63V HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
XR16M2752IJ44	EXAR	获取价格	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
XR16M2752IJ44-F	EXAR	获取价格	Serial I/O Controller, 2 Channel(s), 1MBps, CMOS, PQCC44, GREEN, PLASTIC, LCC-44
XR16M2752IL32	EXAR	获取价格	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
XR16M2752IL32-F	EXAR	获取价格	1.62V TO 3.63V HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
XR16M554	EXAR	获取价格	1.62V TO 3.63V QUAD UART WITH 16-BYTE FIFO
XR16M554D	EXAR	获取价格	1.62V TO 3.63V QUAD UART WITH 16-BYTE FIFO

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