Cermetek Microelectronics, Inc.
High Speed Internet Modem Family
2005 Cermetek Microelectronics, Inc.
Page 2
Document No. 607-0017 Revision I1 (05/05)
Figure
1. Conceptualized Block Diagram illustrating the Cermetek CH21XX iModem product family
performing the embedded internet application function.
Cermetek’s iModem products provide the user with the
ability to assign a unique unit name to each iModem
thereby creating a customized identity for each system
containing an iModem product.
Each iModem device stores the user-supplied
parameters in internal memory. These parameters are
retained when power is removed. The user supplied
parameters are loaded into the iModem via the
iModem’s serial interface port utilizing either
Cermetek’s
iNetWizard
®
telecommunications software
package or, alternatively, one of a variety of
commercially available terminal emulation software
packages.
iNetWizard
®
is available free of charge and
runs on any standard PC operating Microsoft Windows.
Internet Connectivity.
The CH21XX iModem uses the
user supplied parameters to establish an internet
connection and then send, retrieve and/or delete email.
After completion of the required internet activities, the
iModem terminates the internet connection.
Send, Retrieve and Delete Email.
The CH2124/60
products send and retrieve email of modest length. The
pre-stored message length is approximately 125 ASCII
characters. Messages are stored in Flash ROM.
Streaming email is not supported in the CH2124/60
iModem products.
Refer to Cermetek Application Note # 155,
@T
®
Command Set Description and Usage For CH2124/60
iModems, for more details.
iModem Hardware Configuration.
Each CH2160
(CH2124) iModem contains a fully functional 56kbps
(2400bps) modem and the hardware and firmware
needed to provide the internet capability. Because of
the unique architecture of Cermetek iModems, these
iModems have the ability to operate as either an
internet email transceiver or as a high reliability analog
modem. Additionally, the CH2124/60 products support
user remote access which can be used to reprogram or
reconfigure an iModem deployed in the field.
The iModem Family of products are pin compatible with
the CH179X and CH2056 modem products. Referring
to Figure 2, the CH21XX iModem Family consists of an
industrial grade high speed modem module and a µP
controller with associated internal logic. The µP
controller and the logic provide all the functions
required for internet communication via standard PSTN
telephones lines. All CH21XX iModem products utilize
TCP/IP, PPP, PAP, CHAP, SMTP and POP3 internet
protocols.
Remote Access.
Required External Connections.
The iModem
requires an external RJ-11C jack for the PSTN line
connection. An ITU-T V.24 serial interface is required
when host processor control of the iModem is required
in the specific application. All retrieved emails are
presented to the host system for further processing
and/or retention via the serial interface.
Approvals.
The CH21XX iModem Family is FCC Part
68 approved, UL 1950 and CSA C22.2 950 (Third
Edition) listed and Industry Canada CS-03 Part I
registered.
Physical Dimensions.
The modules are designed for
PCB through-hole mounting and are 1.35” x 1.97” x
0.55” in size.
•
User
Name
•
Password
•
ISP Telephone Number
•
Server
Address/Name
•
Local Email Address
•
Destination
Address
•
User Specified Email
Message/Input Port Status
•
User
ID
User Supplied Parameters
•
Send
•
Retrieve
•
Delete
Functions Performed
CH21XX
iModem
Product
Family
Internet
(PPP, SMTP, TCP/IP,
POP3)
