XR68C192(2005) Просмотр технического описания (PDF) - Exar Corporation

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XR68C192
(Rev.:2005)

DUAL UNIVERSAL ASYNCHRONOUS RECEIVER AND TRANSMITTER

Exar Corporation 

Block Diagram

D0-D7

R/-W

-DTACK

-IACK

-RESET

A0-A3

-CS

-INT

XTAL1

XTAL2

Rev. 1.33

XR68C92/192

Channel A

Transmit

FIFO

Registers

Transmit

Shift

Register

Flow

Control

Logic

Receive

FIFO

Registers

Receive

Shift

Register

Flow

Control

Logic

Watch

Dog

Timer

Channel B

Transmit

FIFO

Registers

Transmit

Shift

Register

Flow

Control

Logic

Receive

FIFO

Registers

Flow

Control

Logic

Receive

Shift

Register

Watch

Dog

Timer

Multi-

Purpose

I/O

Control

Logic

TXA

RXA

TXB

RXB

OP0-OP7

IP0-IP5

3

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