參數(shù)資料
型號： XRT16C854
廠商： Exar Corporation
英文描述： 2.97V TO 5.5V QUAD UART WITH 128-BYTE FIFO
中文描述： 2.97V至5.5V四路UART的128字節(jié)FIFO
文件頁數(shù)： 1/54頁
文件大小： 485K
代理商： XRT16C854
Exar
Corporation 48720 Kato Road, Fremont CA, 94538
(510) 668-7000
FAX (510) 668-7017
www.exar.com
xr
XR16C854/854D
2.97V TO 5.5V QUAD UART WITH 128-BYTE FIFO
AUGUST 2005
GENERAL DESCRIPTION
REV. 3.0.1
The XR16C854/854D
1
(854) is an enhanced quad
Universal Asynchronous Receiver and Transmitter
(UART) each with 128 bytes of transmit and receive
FIFOs, transmit and receive FIFO counters and
trigger levels, automatic hardware and software flow
control, and data rates of up to 2 Mbps. Each UART
has a set of registers that provide the user with
operating
status
and
indications, and modem serial interface controls.
System interrupts may be tailored to meet design
requirements. An internal loopback capability allows
onboard diagnostics. The 854 is available in 64-pin
LQFP, 68-pin PLCC and 100-pin QFP packages. The
64-pin package only offers the 16 mode interface, but
the 68 and 100 pin packages offer an additional 68
mode interface which allows easy integration with
Motorola processors. The XR16C854CV (64 pin)
offers three state interrupt outputs while the
XR16C854DV provides continuous interrupt outputs.
The 100 pin package provides additional FIFO status
outputs (TXRDY# and RXRDY# A-D), separate
infrared transmit data outputs (IRTX A-D) and
channel C external clock input (CHCCLK). The
XR16C854/854D is compatible with the industry
standard ST16C554/554D and ST16C654/654D.
control,
receiver
error
N
OTE
:
1 Covered by U.S. Patent #5,649,122 and #5,949,787.
FEATURES
Added feature in devices with top mark date code of
"F2 YYWW" and newer:
■
5 volt tolerant inputs
2.97 to 5.5 Volt Operation
Pin-to-pin compatible with the industry standard
ST16C554 and ST16C654 and TI’s TL16C554N
and TL16C754BFN
Intel or Motorola Data Bus Interface select
Four independent UART channels
■
Register Set Compatible to 16C550
■
Data rates of up to 2 Mbps
■
Transmit and Receive FIFOs of 128 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
■
Wireless Infrared (IrDA 1.0) Encoder/Decoder
Sleep Mode (200 uA typical)
Crystal oscillator or external clock input
APPLICATIONS
Portable Appliances
Telecommunication Network Routers
Ethernet Network Routers
Cellular Data Devices
Factory Automation and Process Controls
F
IGURE
1. XR16C854 B
LOCK
D
IAGRAM
XTAL1
XTAL2
Crystal Osc/Buffer
Data Bus
Interface
UART Channel A
128 Byte TX FIFO
UART
Regs
128 Byte RX FIFO
BRG
IR
ENDEC
TX & RX
2.97V to 5.5V VCC
GND
854 BLK
TXB, RXB, IRTXB, DTRB#,
DSRB#, RTSB#, CTSB#,
CDB#, RIB#, OP2B#
UART Channel B
(same as Channel A)
A2:A0
D7:D0
IOR#
CSA#
CSB#
CSC#
CSD#
16/68#
INTSEL
INTA
INTB
INTC
INTD
IOW#
Reset
CHCCLK
TXRDY# A-D
RXRDY# A-D
UART Channel C
(same as Channel A)
TXA, RXA, IRTXA, DTRA#,
DSRA#, RTSA#, CTSA#,
CDA#, RIA#, OP2A#
TXC, RXC, IRTXC, DTRC#,
DSRC#, RTSC#, CTSC#,
CDC#, RIC#, OP2C#
UART Channel D
(same as Channel A)
TXD, RXD, IRTXD, DTRD#,
DSRD#, RTSD#, CTSD#,
CDD#, RID#, OP2D#
相關(guān)PDF資料
PDF描述
XRT16L2552 2.25V TO 5.5V DUART WITH 16-BYTE FIFO
XRT3591 SINGLECHIP V. 35 TRANSCEIVER
XRT3591B SINGLECHIP V. 35 TRANSCEIVER
XRT3591BID SINGLECHIP V. 35 TRANSCEIVER
XRT3591BIP SINGLECHIP V. 35 TRANSCEIVER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT16L2552 制造商:EXAR 制造商全稱:EXAR 功能描述:2.25V TO 5.5V DUART WITH 16-BYTE FIFO
XRT2588CN 制造商:Exar Corporation 功能描述:
XR-T2713CP 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Subscriber Line Metering/Monitoring Circuit
XR-T3588 制造商:EXAR 制造商全稱:EXAR 功能描述:V.35 Interface Receiver/Transmitter
XR-T3588-89ES 制造商:EXAR 制造商全稱:EXAR 功能描述:XR-T3588/89 Evaluation System
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*