XECOM XEISDNB Datasheet

XECOM (1) XEISDNB

XEISDNB

2/99

Description

The XEISDNB 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 on-board serial TTL level interface and link to
the ISDN subscriber line U interface with its integrated
NT1.

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.

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 XEISDNB 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 Processor with RISC controller. 128K x
16 SRAM, 256K x 16 Flash Memory and
8K x 8 EEPROM included

· ISDN line U interface (integrated NT1) with
2B1Q encoding (ANSI T1.601) for North
American usage

· V.120 rate adaptation, point to point protocol
(PPP), Multi-link PPP, Asynchronous Inverse
Multiplexing (AIM), and synchronous
BONDING protocol

· ISDN control program allows connection
with AT&T 5ESS, Northern Telecom DMS
100 and National ISDN-1 central office
switches

· 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 downloading and system debugging

· Jumper configurable memory addressing al­lows easy change from Development to Ap­plication mode (using built-in ISDN control
program or user developed program)

ISDN Terminal Adapter with NT1 and Channel Bonding

XECOM (2) XEISDNB

XEIS D N B

DMA

(1)

68000

Core

T imers

(3)

DMA

(6)

512 KB

Flash

memory

1152 Byte

Dual port

RAM

SM Cs (2)

and

SCP

SCCs

(3)

256 KB

SRAM

8 KB

EEPROM

U

Interfac e

I/O p orts

RISC

C ontr oller

POTS Data RS-232 -T TL POTS Control

ISDN
Local
Loop

IDL B U S

SCC

(1)

DMA

(2)

XEISDNB Block Diagram

Mechanical Specifications

INCHES METRIC (MM)

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) XEISDNB

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

TI

2

TD TTL

D

TOUT2

RD TTL

T

TTL

T

LK TTL

D

R TTL

R

r

RI TTL

R

TBT

M

LK TTL

R

r

D

T

R

r

D

L

i

E

R

r

LK

DTMF RDY

DI

P

R

TRL

RI

E

RT

TRL

D4

D
D7

D

R

r

Pin Configuration

Pin Descriptions

Pin Name Pin # Direction Description

TIN1 1 ISDN U transformer primary A
TIN2 2 ISDN U transformer primary B
No Pin 3 N/A No pin
TOUT1 4 ISDN U transformer secondary A
TOUT2 5 ISDN U transformer secondary B
Reserved 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-pro-

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

high.
TD_TTL 11 Input RS-232C, Transmitted Data, TTL Level
RD_TTL 12 Output RS-232C, Received Data, TTL Level

Reserved

FSX