OX16C954 Просмотр технического описания (PDF) - Unspecified

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OX16C954

High Performance Quad UART with 128-byte FIFOs Intel / Motorola Bus Interface

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OXFORD SEMICONDUCTOR LTD.

2 BLOCK DIAGRAM

OX16C954 rev B

A[2:0]

D[7:0]

CS0# / CS#

CS1# / A[3]

CS2# / A[4]

CS3#

I/M#

IOR#

IOW# / R/W#

VDD

GND

FIFOSEL

RESET / RESET#

RXRDY#

TXRDY#

XTLI

XTLO

CLKSEL

Intel &

Motorola

Bus

Interface

2

Power

4

supply

Control

and DMA

Interface

Clock &

Baud Rate

Generator

INTEN#

VDETECT*

5v / 3.3v

IO Buffer Control

SERIAL CHANNEL n ( 1 of 4 shown )

Transmitter

128 Byte

FIFO

Control

and

Status

Registers

Receiver

128 Byte

FIFO

Modem

Control

Interface

Interrupt

Control

Logic

Figure 1: OX16C954 Block Diagram

NOTE : VDETECT pin is only available on the 80pin TQFP package option

SOUTn

SINn

RTSn#

DTRn#

OUT1n

OUT2n

CTSn#

DSRn#

DCDn#

RIn#

INTn

Data Sheet Revision 1.0

Page 7

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