IMP16C552 datasheet(8/34 Pages) IMP

Part #	IMP16C552

Description	Dual Universal Asynchronous Receiver/Transmitter (UART) with 16-BYTE FIFO & Parallel Printer Port

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Manufacturer	IMP [IMP, Inc]

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MASTER RESET

A low level input on RESET* pin reset both serial channels and parallel port and forces internal

register and output pins as shown in Table 1.

TABLE1-Reset Configuration of Registers and Output signal for serial channel

Register/signal

Reset control

Reset state

Interrupt Enable register

Interrupt Identification

Register

Line Control Register

Mode Control Register

Line Status Register

Mode Status Register

SOUT

INTRPT(RCVR ERRS)

INTRPT(RCVR DATA READY)

INTRPT(THRE)

RTS*

DTR*

RCVR FIFO

Master Reset

MODEM Signal Inputs

Master Reset

Master Reset/Read LSR

Master Reset /Read RBR

Master Reset /Read II/write

THR

Master Reset

All bits low-bits(4-7)are

Permanently low

Bit

0is

forced

high

and

bits(1-3),6,7are

Forced

low-bits

4and

5are

permanently Low

All bits low

All bits low-bits (5-7) are

permanently Low

All

bits

low-except

nits

5.6which are high

Bits(0-3) low

Bits(4-7)follow input signals

High

Low

High

Undefined data

8

408-432-9100/www.impweb.com

Operational Description

IMP16C552

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