PC16552D datasheet(1/21 Pages) NSC

부품명	PC16552D

상세설명	Dual Universal Asynchronous Receiver/Transmitter with FIFOs

PDF	21 Pages

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제조업체	NSC [National Semiconductor (TI)]

홈페이지	http://www.national.com

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TLC9426

June 1995

PC16552D

Dual Universal Asynchronous

ReceiverTransmitter with FIFOs

General Description

The PC16552D is a dual version of the PC16550D Universal

Asynchronous ReceiverTransmitter (UART) The two serial

channels are completely independent except for a common

CPU interface and crystal input On power-up both channels

are functionally identical to the 16450

Each channel can

operate with on-chip transmitter and receiver FIFOs (FIFO

mode) to relieve the CPU of excessive software overhead

In FIFO mode each channel is capable of buffering 16 bytes

(plus 3 bits of error data per byte in the RCVR FIFO) of data

in both the transmitter and receiver All the FIFO control

logic is on-chip to minimize system overhead and maximize

system efficiency

Signalling for DMA transfers is done through two pins per

channel (TXRDY and RXRDY) The RXRDY function is mul-

tiplexed on one pin with the OUT 2 and BAUDOUT func-

tions The CPU can select these functions through a new

register (Alternate Function Register)

Each channel performs serial-to-parallel conversion on data

characters received from a peripheral device or a MODEM

and parallel-to-serial conversion on data characters re-

ceived from the CPU The CPU can read the complete

status of each channel at any time Status information re-

ported includes the type and condition of the transfer opera-

tions being performed by the DUART as well as any error

conditions (parity overrun framing or break interrupt)

The DUART includes one programmable baud rate genera-

tor for each channel Each is capable of dividing the clock

input by divisors of 1 to (216 b 1) and producing a 16 c

clock for driving the internal transmitter logic Provisions are

also included to use this 16 c clock to drive the receiver

logic The DUART has complete MODEM-control capability

and a processor-interrupt system Interrupts can be pro-

grammed to the user’s requirements minimizing the com-

puting required to handle the communications link

The DUART is fabricated using National Semiconductor’s

advanced M2CMOSTM

Features

Y

Dual independent UARTs

Y

Capable of running all existing 16450 and PC16550D

software

Y

After reset all registers are identical to the 16450 reg-

ister set

Y

Read and write cycle times of 84 ns

Y

In the FIFO mode transmitter and receiver are each

buffered with 16-byte FIFOs to reduce the number of

interrupts presented to the CPU

Y

Holding and shift registers in the 16450 Mode eliminate

the need for precise synchronization between the CPU

and serial data

Y

Adds or deletes standard asynchronous communication

bits (start stop and parity) to or from the serial data

Y

Independently controlled transmit receive line status

and data set interrupts

Y

Programmable baud generators divide any input clock

by1to(216 b 1) and generate the 16 c clock

Y

MODEM control functions (CTS RTS DSR DTR RI

and DCD)

Y

Fully programmable serial-interface characteristics

5- 6- 7- or 8-bit characters

Even odd or no-parity bit generation and detection

1- 1

- or 2-stop bit generation

Baud generation (DC to 15M baud) with 16 c clock

Y

False start bit detection

Y

Complete status reporting capabilities

Y

TRI-STATE

TTL drive for the data and control buses

Y

Line break generation and detection

Y

Internal diagnostic capabilities

Loopback controls for communications link fault

isolation

Break parity overrun framing error simulation

Y

Full prioritized interrupt system controls

Can also be reset to 16450 Mode under software control

Note This part is patented

TRI-STATE

is a registered trademark of National Semiconductor Corporation

M2CMOSTM is a trademark of National Semiconductor Corporation

C1995 National Semiconductor Corporation

RRD-B30M75Printed in U S A

유사한 부품 번호 - PC16552D

제조업체	부품명	데이터시트	상세설명
Texas Instruments	PC16552D	335Kb / 24P	Dual Universal Asynchronous Receiver/Transmitter with FIFOs
	PC16552D	335Kb / 24P	PC16552D Dual Universal Asynchronous Receiver/Transmitter with FIFOs?
	PC16552DV/NOPB	335Kb / 24P	PC16552D Dual Universal Asynchronous Receiver/Transmitter with FIFOs?
	PC16552DVX	335Kb / 24P	Dual Universal Asynchronous Receiver/Transmitter with FIFOs
	PC16552DVX/NOPB	335Kb / 24P	PC16552D Dual Universal Asynchronous Receiver/Transmitter with FIFOs?

More results

유사한 설명 - PC16552D

제조업체	부품명	데이터시트	상세설명
National Semiconductor ...	PC16550D	344Kb / 22P	PC16550D Universal Asynchronous Receiver/Transmitter with FIFOs
	PC16552C	827Kb / 22P	Dual Universal Asynchronous Receiver/Transmitter with FIFOs
	PC16553	1Mb / 37P	Dual Universal Asynchronous Receiver/Transmitter with FIFOs plus High Performance Parallel Interface
NXP Semiconductors	SC26C92	203Kb / 31P	Dual universal asynchronous receiver/transmitter DUART 2000 Jan 31
NXP Semiconductors	SC28L202	531Kb / 77P	Dual universal asynchronous receiver/transmitter DUART 2000 Feb 10
IMP, Inc	IMP16C554	510Kb / 20P	Quad Universal Asynchronous Receiver/Transmitter (UART) with FIFOs
Exar Corporation	ST162552	121Kb / 28P	DUAL ASYNCHRONOUS RECEIVER/TRANSMITTER WITH FIFOs
Texas Instruments	NS16C552	335Kb / 24P	PC16552D Dual Universal Asynchronous Receiver/Transmitter with FIFOs?
Exar Corporation	XR88C192IV-F	185Kb / 32P	DUAL UNIVERSAL ASYNCHRONOUS RECEIVER AND TRANSMITTER
Texas Instruments	PC16552DVX	335Kb / 24P	Dual Universal Asynchronous Receiver/Transmitter with FIFOs

More results

PC16552D 데이터시트(PDF) 1 Page - National Semiconductor (TI)

PC16552D 데이터시트(HTML) 1 Page - National Semiconductor (TI)

유사한 부품 번호 - PC16552D

유사한 설명 - PC16552D

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