XECOM XE056J Datasheet

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XE056J

7/99

Slim-Link R PLCC DAA for 56kBPS Data Transfer

Description

The XE056J is a complete DAA supporting 56 KBPS data transfer in a compact, surface-mount package. It is an alternative to discrete DAA’s for high-speed communications. The XE056J replaces 25 to 30 discrete components with a single, assembled unit. The XE056J package fits a 68 pin PLCC socket permitting automated, high-volume assembly.

The XE056J does not sacrifice performance for small size and surface-mount convenience. The wide bandwidth, low distortion design supports analog data transfer to 56 KBPS.

Features

*Modified 68-Pin PLCC package for high-volume assembly

*Meets line interface requirements for reliable 56 Kbps modems;

*High Performance: Typical Total Harmonic Distortion -85 dB ;

*FCC Part 68 Compliant;

*Integrated Low-Distortion Telephone Line Transformer

*Ring Detection, active high and active low options available;

*Operates on a Single +5 Volt or + 3 Volt Power Supply;

Like all Xecom DAA's the XE056J is a complete DAA. It includes the telephone line transformer, loop current holding circuit, hookswitch and ring indicator. The XE056J complies with FCC Part 68 rules for direct connection to the telephone line.

*Solid-State Hookswitch Control, active high and active low options available;

*Internal metallic surge protection provided;

*Extended Temperature Ranges available;

XE056J BLOCK DIAGRAM

/MUTE

 

 

Low Imped-

 

 

 

 

 

 

 

 

ance Dialing

 

 

 

 

 

 

L1

 

 

 

 

 

 

 

 

 

 

 

 

 

L2

 

 

 

 

 

 

 

T1

 

Line Current

BillingTone

Tip

 

LineTrans-

 

T2

Holding Cir-

Filter

Ring

former

 

cuit

(Optional)

 

 

 

 

 

 

 

metallic

OH

 

 

 

surge sup-

 

 

Hookswitch

pression

 

 

 

 

 

 

 

RI

 

 

 

Ring De-

 

 

 

 

 

 

 

 

tector

XECOM

(1)

XE056J

XE056J Ordering Information

The standard version of the XE056J is the XE056JLHGU. The L indicates that the off-hook control is an active low; the H indicates that the Ring Indicate output is an active high; the G indicates General Purpose feature set, and the U indicates the North American country configuration.

There are a number of variations of the XE056J which can be provided on special order. We offer a choice in the polarity of the Ring Indicate and Off-Hook signals plus variations for many different countries. We also anticipate adding many new features and options in future versions of this product. Please contact your Xecom sales representative for the correct model number when ordering any of these special versions of the XE056J.

XE056J Mechanical Specifications

 

 

 

 

 

 

 

 

 

 

 

 

a

h x 45 degrees

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(3 Places)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

(top)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D3

 

 

 

 

 

 

 

 

 

b

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D2

e

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Inches

Millimeters

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Dim

 

 

Min

Max

Min

 

Max

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9

10

 

 

 

 

 

 

 

 

A

 

0.280

0.300

7.11

 

7.62

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A1

 

 

 

0.020 REF

0.508 REF

 

Index Corner

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

b

 

0.017

0.021

0.432

0.533

 

J x 45 degrees

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(bottom)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D

 

0.985

0.995

25.02

 

25.27

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D1

 

 

 

0.952 REF

24.18 REF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D2

 

 

 

0.800 REF

20.32 REF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D3

 

0.910

0.930

23.11

 

23.62

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

e

 

 

 

0.100 BSC

2.54 BSC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

h

 

 

 

0.010 TYP

0.254 TYP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J

 

 

 

0.045 Typ

1.15 TYP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

a

 

 

 

 

45o TYP

45o TYP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D1

 

 

 

 

 

 

Coplanarity

 

 

 

0.004 Max

0.10 MaxA1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

XECOM

(2)

XE056J

XE056J Pin Descriptions

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N/C

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18

 

 

RI

 

 

 

 

 

 

 

 

 

XE056J

 

 

 

Ring

 

 

2

 

 

 

17

 

 

N/C

 

 

 

 

Tip

 

 

3

 

 

(top)

 

16

 

 

N/C

 

 

 

 

N/C

 

 

4

 

 

 

 

15

 

 

T1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L1 (Opt)

 

 

5

 

 

 

 

14

 

 

T2

 

 

 

 

 

 

 

 

 

 

 

 

L2 (Opt)

 

 

6

 

 

 

 

13

 

 

Mute

 

 

 

 

 

 

 

 

 

 

 

 

N/C

 

 

7

 

 

 

 

12

 

 

OH

 

 

 

 

 

 

 

 

 

 

 

 

N/C

 

 

8

 

 

 

 

11

 

 

VCC

 

 

 

 

 

 

 

 

 

 

 

 

N/C

 

 

 

9

 

 

 

 

10

 

 

Gnd

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 4: XE056J Pin Configuration

Pin Name

Description

1

N/C

No Connection

2

Ring

Ring is one wire of the two-wire telephone line

 

 

connection

(RJ11 Pin 4). FCC Part 68 Rules

 

 

require a 1500 volt isolation barrier between

 

 

the telephone line and all other circuits. This

 

 

isolation must be preserved throughout the

 

 

system. Xecom recommends 0.100 inch

 

 

spacing between traces connected to Ring and

 

 

all other conductors to preserve this isolation.

3

Tip

Tip is one wire of the two-wire telephone line

 

 

connection

(RJ11 Pin 3). The telephone

 

 

company places a DC "Battery" voltage across

 

 

Tip and Ring on all public switched telephone

 

 

lines. The XE056J accept this line battery

 

 

voltage without regard to its polarity.

4

N/C

No Connection

5, 6

L2

L1 and L2 provide the points to connect a five

 

 

millihenry inductor. This inductor completes

 

 

the 16 KHz German billing tone filter.

7-9

N/C

No Connection

10

GND

Ground connection to the XE056J. This signal

 

 

provides the reference for the OH output and RI

 

 

input. This pin should be connected to the

 

 

systems digital ground.

11

VCC

+5 or +3 Volt power source for the XE056J.

 

 

VCC powers the RI and OH control lines.

Pin

Name

Description

 

12

OH

Switch-hook control to the modem.

OH is

 

 

normally an active low input. OH is available

 

 

as an active high input by special order.

 

 

Activating OH closes the switch-hook causing

 

 

the XE056J to seize the local telephone line.

 

 

The telephone line connection is dropped when

 

 

OH is deactivated.

 

 

 

The host can pulse OH to simulate rotary

 

 

dialing. The pulse rate in the US is ten pulses

 

 

per second. Each digit is dialed as a series of

 

 

pulses created by closure of the hook-switch.

 

 

(one pulse for the digit one to ten pulses for the

 

 

digit zero) The pulses must be asymmetrical so

 

 

that the hook-switch is closed for thirty-one

 

 

milliseconds and open for sixty-nine

 

 

milliseconds. An inter-digit delay of at least

 

 

one hundred milliseconds is required.

 

13

Mute

Mute is an optional signal on the XE056J.

 

 

Countries which require low impedance

 

 

dialing, such as Italy, use the Mute signal to

 

 

pulse dial.

 

14

T2

T2 in conjunction with T1 provides the

 

 

differential input/output for the analog signal.

 

 

T2 connects directly to the secondary side of

 

 

the line transformer embedded into the

 

 

XE056J. To match the impedance of the DAA

 

 

to the 600 ohm telephone line, a 280 ohm

 

 

resistor is required on T1 or T2.

 

15

T1

T1 in conjunction with T2 provides the

 

 

differential input/output for the analog signal.

 

 

T1 connects directly to the secondary side of

 

 

the line transformer embedded into the

 

 

XE056J. To match the impedance of the DAA

 

 

to the 600 ohm telephone line, a 280 ohm

 

 

resistor is required on T1 or T2.

 

16-17 N/C

No Connection

 

18

RI

Ring Indicate output from the modem. RI is

 

 

normally active high. RI is available as an ac-

 

 

tive low output by special order. RI provides

 

 

a square wave representation of the Ring sig-

 

 

nal present across Tip and Ring. This permits

 

 

intelligent monitoring of the incoming

ring.

 

 

The XE056J recognizes ring voltages of thirty-

 

 

eight to one hundred fifty volts RMS in the

 

 

frequency range of sixteen to sixty-eight

 

 

Hertz.

 

XECOM

(3)

XE056J

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