SC28L92A1B Ver la hoja de datos (PDF) - Philips Electronics

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SC28L92A1B

3.3V–5.0V Dual Universal Asynchronous Receiver/Transmitter (DUART)

Philips Electronics 

Philips Semiconductors

3.3V–5.0V Dual Universal Asynchronous

Receiver/Transmitter (DUART)

Product specification

SC28L92

8

D0–D7

R/WN

IACKN

CEN

4

A0–A3

RESETN

INTRN

DACKN

X1/CLK

X2

BUS BUFFER

OPERATION CONTROL

ADDRESS

DECODE

R/W CONTROL

INTERRUPT CONTROL

IMR

ISR

IVR

TIMING

BAUD RATE

GENERATOR

CLOCK

SELECTORS

COUNTER/

TIMER

XTAL OSC

CSRA

CSRB

ACR

CTL

CTU

CHANNEL A

16 BYTE TRANSMIT

FIFO

TRANSMIT

SHIFT REGISTER

16 BYTE RECEIVE

FIFO

WATCH DOG TIMER

RECEIVE SHIFT

REGISTER

MRA0, 1, 2

CRA

SRA

CHANNEL B

(AS ABOVE)

INPUT PORT

CHANGE OF

STATE

DETECTORS (4)

IPCR

ACR

OUTPUT PORT

FUNCTION

SELECT LOGIC

OPCR

OPR

Figure 2. Block Diagram (68XXX mode)

TxDA

RxDA

TxDB

RxDB

6

IP0-IP5

8

OP0-OP7

VCC

VSS

SD00694

2000 Jan 21

7

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