I
NTEGRATED
C
IRCUITS
D
IVISION
UG-CPC5622-EVAL-600R - Rev A
www.ixysic.com
1
1. Introduction
Thank you for using IXYS IC Division’s
CPC5622-EVAL-600R evaluation board. The
evaluation board ships with the CPC5622A
LITELINK III and CPC5712U Voltage Monitor to
demonstrate the functionality of a PSTN terminating
two-wire interface that provides both the analog voice
transmission and signaling functions. The analog
interface is configured to provide a 600
resistive AC
impedance with 0dB gain in both the transmit and
receive directions. While the CPC5622A provides the
hook-switch and ringing detect signaling functions, the
CPC5712U is utilized to monitor and detect changes
in the DC line voltage to determine loop status and
signaling information sent by the network. Loop status
is given by the logic level outputs of the three
CPC5712U on-board detectors indicating Loop
Presence, Line In Use, and Loop Polarity.
CPC5622-EVAL-600R evaluation board top and
bottom views are shown in the following illustrations.
Figure 1. Evaluation Board Top View
Figure 2. Evaluation Board Bottom View
The printed-circuit board used for the
CPC5622-EVAL-600R evaluation board is a
multi-purpose board that facilitates prototyping of
many PSTN line interface configurations by simple
component changes. Specific evaluation board
models provided by IXYS IC Division can be identified
by the label appended to the core part number
“CPC5622-EVAL-”. The suffix label “600R” as shown
in
Figure 1
for this model indicates the two-wire AC
input impedance is 600
. For the 600R model, the
transmit and receive gains are 0dB.
•
600R = 600
resistive AC termination with 0dB
transmit and receive gains.
In addition to the model identification label some
boards may have a second label located just below
the evaluation board part number indicating the
evaluation board’s serial number.
CPC5622-EVAL-600R
LITELINK™ III Evaluation Board
User’s Guide
