XECOM XEISDNS Datasheet

XECOM (1) XEISDNS

XEISDNS

1/99

ISDN Terminal Adapter Module with S/T Interface and Channel Bonding

Description

The XEISDNS integrated ISDN Terminal
Adapter offers an easy to use, high performance,
component-level solution for equipment designs
needing access to ISDN service. The module can
directly connect to a host processor through its on­board serial TTL level interface and link to the
ISDN subscriber line S/T interface which is stan­dard in most European countries.

The device is designed for the ISDN Basic Rate
Interface (BRI) which consists of two 64 k bps
bearer (B) channels for data or voice and one delta
(D) channel for signaling. The module can provide
a full 128k bps synchronous data channel by com­bining the two bearer channels.

Alternatively, one 64k bps channel can be
dedicated to data while the other can be made
available for analog phone/fax/modem calls with
the addition of the XEISDNP Analog Telephone
(POTS) Equipment Interface. Together these pro­vide the user with a complete ISDN terminal
adapter function in two compact modules.

XEISDNS is designed to accommodate a wide
range of software and protocols. It adapts to both
single-link and multi-link Point-toPoint Protocol
(PPP), as well as Asynchronous Inverse Multiplex­ing (AIM) up to 115.2k bps, and to synchronous
BONDING to 128k bps.

Built-in ISDN control firmware supports all the func­tions necessary for setup and configuration of the terminal
adapter and the ISDN line. Configuration can be accom­plished via an extended AT command set, a menu-driven
setup utility, or factory default/user stored configuration
profiles.

The built-in ISDN Monitor firmware has fifteen com­mands supporting customer program development and
download. The 256Kx16 Flash memory is designed to
support custom control program downloading. By changing
a configuration pin the XEISDNS can boot-up from the
ISDN-Monitor or a user developed program as well as the
built-in ISDN control program.

Features

· Small size: 2.75" x 1.38" x 0.42"

· Motorola MC68302 Integrated Multi-protocol Proces-

sor with RISC controller. 128K x 16 SRAM, 256K x

16 Flash Memory and 8K x 8 EEPROM included

· ISDN Basic Rate Interface ETS 300 012 compliant, “S/

T” reference point.

· V.110 and V.120 rate adaptation, point to point protocol

(PPP), Multi-link PPP, Asynchronous Inverse Multi-

plexing (AIMux), and synchronous BONDING protocol

· Switch compatibility with ETSI (Euro ISDN). Layer 1:

ETS 300 012, Layer 2: ETS 300 125, Layer 3 ETS 300

102-1 and 102-2

· EIA-232E/V.24 ready serial interface at TTL levels (RS-

232-TTL)

· 300 to 115,200 bps asynchronous, 1200 to 64,000 bps

synchronous data rate; up to 128k bps with BONDING

protocol

· Menu-driven and stored configurations

· Control outputs to interface with XEISDNP Analog

Telephone (POTS) Equipment Interface module

· On-board ISDN Monitor supports user program down-

loading and system debugging

· Jumper configurable memory addressing allows easy

change from Development to Application mode (using

built-in ISDN control program or user developed pro-

gram)

XECOM (2) XEISDNS

XEISDNS Block Diagram

XEISDNS

DMA

(1)

68000

Core

Timers

(3)

DMA

(6)

512 KB

Flash

memory

1152 Byte

Dual port

RAM

SM Cs (2)

and

SCP

SCCs

(3)

256 KB

SRA M

8 KB

EEPROM

S/T

Interfa ce

I/O ports

RISC

Controller

POTS Data RS-232 -TT L POTS Control

ISDN
Local
Loop

IDL B U S

SCC

(1)

DMA

(2)

Mechanical Specifications

INCHES METRIC(MM)

Dim MIN MAX MIN MAX

A 2.740 2.760 69.60 70.10
B 1.370 1.390 34.80 35.31
C 0.420 0.430 10.67 10.92
D 1.190 1.210 30.23 30.73
E 2.290 2.310 58.17 58.67
F 0.125 0.200 3.18 5.08
G 0.080 0.100 2.03 2.54
H 0.215 0.235 5.46 5.97
I 0.090 0.110 2.29 2.79

J 0.020 0.025 0.51 0.64

Denotes Pin 1

A

B

C

FJ

HI H

E

GG

D

XECOM (3) XEISDNS

2

6

5

4

3

8

7

12

11

10

9

14

13

18

17

16

15

20

19

24

23

22

21

47

48

43

44

45

46

41

42

37

38

39

40

35

36

31

32

33

34

29

30

25

26

27

28

R

r

R

r

R

r

Rx

TD TTL

D

TxN

RD TTL

T

TTL

T

LK TTL

D

R TTL

R

r

RI TTL

R

TBT

M

LK TTL

R

r

DOUT

R

r

DI

DCL

is

p

EN

R

r

SCLK

DTMF RDY

DI

PWR CTRL

RI

E

RT CTRL

D4

PDI

D
D7

D

R

r

Pin Configuration

Pin Descriptions

Pin Name Pin # Direction Description

RxP 1 ISDN S interface transformer Rx+
RxN 2 ISDN S interface transformer Rx­Reserved 3 N/A No user connection allowed
TxP 4 ISDN S interface transformer Tx+
TxN 5 ISDN S interface transformer Tx­Reserved 6 N/A No user connection allowed
Reserved 7 N/A No user connection allowed
Reserved 8 N/A No user connection allowed
GND 9 Ground Power & signal ground
CFG/SDO 10 Input/Output Configuration setup. See Modes of Operation. When re-program-

ming the In-System Programmable (ISP) CPLD, this pin is used
for the cascade connections and should not be pulled low or high.

FSX