Datasheet > 微控制器和处理器 > 串行 IO/通信控制器> TL16C554I

TL16C554I

更新时间： 2024-11-21 22:42:11

品牌	Logo	应用领域
德州仪器 - TI		通信
页数	文件大小	规格书
33页	477K
描述
ASYNCHRONOUS COMMUNICATIONS ELEMENT

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TL16C554I 数据手册

TL16C554, TL16C554I

ASYNCHRONOUS COMMUNICATIONS ELEMENT

SLLS165D – JANUARY 1994 – REVISED JULY 1998

Integrated Asynchronous Communications

Element

Fully Programmable Serial Interface

Characteristics:

– 5-, 6-, 7-, or 8-Bit Characters

– Even-, Odd-, or No-Parity Bit

– 1-, 1 1/2-, or 2-Stop Bit Generation

– Baud Generation (DC to 1-Mbit Per

Second)

Consists of Four Improved TL16C550 ACEs

Plus Steering Logic

In FIFO Mode, Each ACE Transmitter and

Receiver Is Buffered With 16-Byte FIFO to

Reduce the Number of Interrupts to CPU

False Start Bit Detection

In TL16C450 Mode, Hold and Shift

Registers Eliminate Need for Precise

Synchronization Between the CPU and

Serial Data

Complete Status Reporting Capabilities

Line Break Generation and Detection

Internal Diagnostic Capabilities:

– Loopback Controls for Communications

Link Fault Isolation

Up to 16-MHz Clock Rate for up to 1-Mbaud

Operation

– Break, Parity, Overrun, Framing Error

Simulation

Programmable Baud Rate Generators

Which Allow Division of Any Input

Reference Clock by 1 to (2 –1) and

Fully Prioritized Interrupt System Controls

Generate an Internal 16 × Clock

Modem Control Functions (CTS, RTS, DSR,

DTR, RI, and DCD)

Adds or Deletes Standard Asynchronous

Communication Bits (Start, Stop, and

Parity) to or From the Serial Data Stream

3-State Outputs Provide TTL Drive

Capabilities for Bidirectional Data Bus and

Control Bus

Independently Controlled Transmit,

Receive, Line Status, and Data Set

Interrupts

description

The TL16C554 and the TL16C554I are enhanced quadruple versions of the TL16C550B asynchronous

communications element (ACE). Each channel performs serial-to-parallel conversion on data characters

received from peripheral devices or modems and parallel-to-serial conversion on data characters transmitted

bytheCPU. ThecompletestatusofeachchannelofthequadrupleACEcanbereadatanytimeduringfunctional

operation by the CPU. The information obtained includes the type and condition of the operation performed and

any error conditions encountered.

The TL16C554 and the TL16C554I quadruple ACE can be placed in an alternate FIFO mode, which activates

the internal FIFOs to allow 16 bytes (plus three bits of error data per byte in the receiver FIFO) to be stored in

both receive and transmit modes. To minimize system overhead and maximize system efficiency, all logic is on

the chip. Two terminal functions allow signaling of direct memory access (DMA) transfers. Each ACE includes

a programmable baud rate generator that can divide the timing reference clock input by a divisor between 1 and

(2 –1).

The TL16C554 and the TL16C554I are available in a 68-pin plastic-leaded chip-carrier (PLCC) FN package and

in an 80-pin (TQFP) PN package.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...33

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与TL16C554I相关器件

型号	品牌	获取价格	描述	数据表
TL16C554IFN	TI	获取价格	ASYNCHRONOUS COMMUNICATIONS ELEMENT
TL16C554IFNG4	TI	获取价格	ASYNCHRONOUS COMMUNICATIONS ELEMENT
TL16C554IFNR	TI	获取价格	ASYNCHRONOUS COMMUNICATIONS ELEMENT
TL16C554IFNRG4	TI	获取价格	ASYNCHRONOUS COMMUNICATIONS ELEMENT
TL16C554IPN	TI	获取价格	ASYNCHRONOUS COMMUNICATIONS ELEMENT
TL16C554IPNG4	TI	获取价格	ASYNCHRONOUS COMMUNICATIONS ELEMENT
TL16C554IPNRG4	TI	获取价格	IC 4 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, PQFP80, GREEN, TQFP-80, Serial IO/Communi
TL16C554PN	TI	获取价格	ASYNCHRONOUS COMMUNICATIONS ELEMENT
TL16C554PNG4	TI	获取价格	ASYNCHRONOUS COMMUNICATIONS ELEMENT
TL16C554PNR	TI	获取价格	ASYNCHRONOUS COMMUNICATIONS ELEMENT

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