XE1401B datasheet, PDF - EEWORLD Datasheet

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XE1401B: DescriptionMulti-National 14,400 BPS Embeddable Modem; File Size62KB，18 Pages; ManufacturerETC

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XE1401B Overview

Multi-National 14,400 BPS Embeddable Modem

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XE1401

4/99

Multi-National 14,400 BPS Embeddable Modem

Description

Xecom's XE1401 is a complete 14,400 bps modem in a

single component. It is available for use in many

countries throughout the world. Xecom offers versions

for North America and Japan, Germany, France, Italy,

and the United Kingdom.

The XE1401 is a complete modem including the DAA.

XE1401 users do not need to add RAM, ROM, Crystals,

transformers, or switches to complete the modem de-

sign. The user only needs to provide the TTL level,

serial interface and the telephone jack.

The XE1401 is a full-featured modem. Besides the

14,400 bps data transfer, the XE1401 supports data

compression, error correction and fax transfer. The

XE1401 also inlcudes NVRAM for permanent storage of

the modem configuration.

The XE1401 is pin compatible with Xecom's XE2401L

and XE3301 modems. This family of modems permits a

simple upgrade path from 2400 bps to 33,600 bps.

Features

Models for North America, Japan, and Europe

Country

Canada

Japan

France

Germany

Italy

USA

Model

XE1401

XE1401F

XE1401G

XE1401I

XE1401B

XE1401

Small Size: 2.75 inches by 1.38" by 0.42"

UL1459 Recognized

Modem Protocols: V.32bis (14,400 bps), V.32,

V.22bis, V.22, V.21, Bell 212A and 103

Fax Protocols: V.17 (14,400 bps), V.29, V.27ter, and

V.21 channel 2

Error Correction; V.42, MNP2-4 and MNP10

Data Compression; V.42bis and MNP5 provides a

maximum effective data rate of 57,600 bps.

Pin compatible with Xecom's XE2401L and XE3301

modems

(user transferable FCC Registration)

Serial I/O

/DTR

/RTS

/CTS

/DSR

TXD

RXD

/DCD

Block Diagram

ROM

Modem

Controller

NVRAM

Analog

Front

End

DAA

Tip

Ring

Auxiliary I/O

RESET

/LCS

XECOM

(1)

XE1401

XE1401 Pin Descriptions

PIN NAME

RESET

DESCRIPTION

Hardware reset pin, Input, active High, TTL. A high on Pin 1 initiates a hardware reset. An

external reset is not required or recommended. The Reset pulse must be a minimum of 100

milliseconds long.

No Internal Connection

Received Data, Output, TTL. Serial data output to the host. A logic "High" on RXD rep-

resents a "mark" and a logic "Low" represents a "space".

Data Terminal Ready, Input, active Low, TTL. The "AT&D" command sets the function of

\DTR. The default, AT&D2, requires the host to assert \DTR to permit a modem link. The

modem drops the call in progress if \DTR is revoked and will not connect until \DTR is re-

asserted.

Loop Current Sense, active Low Input, TTL. A low on \LCS tells the modem that loop

current is flowing through Tip and Ring. This feature is used only in the XE1401B version.

Clear to Send, Output, active Low, TTL/CMOS. \CTS is used as a Flow Control output

from the modem. The modem revokes \CTS with hardware flow control active to signal the

host that the modem's input buffer is full. The modem reasserts \CTS when the buffer can

accept more data without a buffer overflow.

Off-Hook, Output, active High. OH indicates the modem's hookswitch relay is closed.

Hookswitch closure connects the modem to the telephone line.

Transmit Data, Input, TTL. Serial data input from the host. A logic "High" represents a

"mark" and a Low represents a"space", TTL.

Request to Send, input, active LOW, TTL. The XE1401 uses \RTS for hardware flow con-

trol. When \RTS is revoked and hardware flow control is enabled, the modem will not place

data on RXD.

No Internal Connection

Ring Indicator, Output, active Low, TTL. When low indicates the modem is receiving a ring

signal.

Tip connection to the phone line (RJ11 pin3) from the internal DAA. The XE1401 is not

sensitive to the battery voltage polarity across Tip and Ring.

Ring connection to the phone line (RJ11 pin4) from the internal DAA.

Ground (0 volts)

Audio Output function is set by L & M commands and the value in register S22. This output

can drive a minimum load of 300 ohms.

N/C

RXD

\DTR

\LCS

\CTS

TXD

\RTS

\RI

TIP

RING

GND

AMP

XECOM

(3)

XE1401

XE1401B Related Products

	XE1401B	XE1401	XE1401F	XE1401I
Description	Multi-National 14,400 BPS Embeddable Modem	Multi-National 14,400 BPS Embeddable Modem	Multi-National 14,400 BPS Embeddable Modem	Multi-National 14,400 BPS Embeddable Modem

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