SC16C2550 datasheet(15/46 Pages) PHILIPS

Part #	SC16C2550

Description	Dual UART with 16 bytes of transmit and receive FIFOs and infrared (IrDA) encoder/decoder

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Manufacturer	PHILIPS [NXP Semiconductors]

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Philips Semiconductors

SC16C2550

Dual UART with 16 bytes of transmit and receive FIFOs and IrDA

encoder/decoder

Product data

Rev. 03 — 19 June 2003

15 of 46

9397 750 11621

data that is then made available at the user data interface D0-D7. The user optionally

compares the received data to the initial transmitted data for verifying error-free

operation of the UART TX/RX circuits.

In this mode, the receiver and transmitter interrupts are fully operational. The Modem

Control Interrupts are also operational.

Fig 6.

Internal loop-back mode diagram.

TRANSMIT

FIFO

REGISTER

TXA, TXB

RECEIVE

SHIFT

REGISTER

RECEIVE

FIFO

REGISTER

RXA, RXB

SC16C2550

TRANSMIT

SHIFT

REGISTER

MODEM

CONTROL

LOGIC

CLOCK AND

BAUD RATE

GENERATOR

XTAL2

XTAL1

DATA BUS

AND

CONTROL LOGIC

D0–D7

IOR

IOW

RESET

A0–A2

CSA, CSB

REGISTER

SELECT

LOGIC

INTA, INTB

TXRDYA, TXRDYB

RXRDYA, RXRDYB

INTERRUPT

CONTROL

LOGIC

002aaa120

MCR[4] = 1

CTSA, CTSB

RTSA, RTSB

DSRA, DSRB

DTRA, DTRB

RIA, RIB

(OP1A, OP1B)

CDA, CDB

(OP2A, OP2B)

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Manufacturer	Part #	Datasheet	Description
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