SP504AN

SP504 Application Note

© Copyright 2000 Sipex Corporation

1

Typical Environment Using Frame Relay and X.25 Systems

Multi-

Protocol

Router

Frame

Relay

Switch

X.25

Switch

FRAD

&

X.25

Switch

Workstations

Workstations

PCs

PCs

Mainframe

Mainframe

Mainframe

Workstations

Workstation

Workstation

PC

PC

PCs

2.1Mb/s

1.5Mb/s

Corporate Office

Engineering/Manufacturing

Remote Office

Branch Office

56kb/s

56/64kb/s

Frame

Relay

The introduction of our SP502 transceiver paved

the way for a new generation of multi-mode

transceivers that are being designed into next

generation networking products. The SP504

multi-mode transceiver is the latest member of

the family and offers: reduced external V.35

termination; V.36 & EIA-530A modes; and

receiver tri-state and fail-safe ability.

As with the SP502 and SP503, the SP504 can be

programmed via software to the different avail-

able physical protocols and is also drop-in com-

patible with its predecessors.

The versatility of the SP504 is ideal for multi-

protocol applications such as Frame Relay sys-

tems, X.25 routers/switches and multi-protocol

routers. These multi-protocol systems will usu-

ally contain multiple ports to accommodate the

different interfaces. The SP504 can support all

the ports through software and provide conve-

nient DTE or DCE functionality to the port. DTE

and DCE configuration is provided on the next

page and also in the SP504 data sheet.

The designer can evaluate the SP504 with

our SP504 Evaluation Board. This evaluation

board basically allows the user to access the

pins directly through probe points on the board.

The designer can also access the device by

software through the three serial port connec-

tors on the board. Details on the evaluation

board can be found in the SP504 data sheet.

SP504

Application Note

®