Cermetek CH2124 Manual

High speed internet modem, send/retrieve email 2 i/o ports 2400bps/v.90

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CH2124
CH2160
FEATURES
Replaces conventional modems using the world
wide web for communication.
Transparent internet operations of Point-to-Point
Protocol (PPP), Password Authentication Protocol
(PAP) and Challenge Authentication Protocol
(CHAP) to connect to the Internet.
Built-in TCP/IP and SMTP to send emails, TCP/IP
and POP3 to retrieve and/or delete emails.
On Demand and I/O pin event driven email
transmission and retrieval.
Send/Retrieve email.
Retrieve select individual message.
Programmable using serial interface.
Remote programming using PSTN.
Resident modem supports: V.90, V.34bis, V.34,
V.22bis, V.22A/B V.23, V.21, Bell 212A and 103,
(depending on model) and can be used in
conventional modem mode.
Error correcting: V.42 LAPM, MNP 2-4 and MNP10
(CH2160).
Automatic baud rate adaptability utilizing speed
sensing, flow control and data buffers.
Serial interface, V.24 (EIA 232-E), 5 volts.
NVRAM for stored modem (S-Registers) profiles.
®
Cermetek @T
AT-like Commands.
Built-in DAA with 1500 VAC RMS isolation 2122V
peak surge protection.
UL 1950 and CSA C22.2 950 (Third Edition) Listed,
reference UL File E104957.
FCC Part 68 Approved/Industry Canada CS-03 Part
I approvable.
Pin-for-Pin compatible family.
+5 Volt operation.
Small size: 1.35" x 1.97" x 0.55" (nominal).
Low Cost 2400bps version (CH2124).
Use with any Non-proprietary commercial or private
ISP.
Cermetek's iModem Network ISP has 1000s of
local access numbers world wide.
Failsafe back up 1-800 access number, auxiliary
and alternative telephone numbers available.
1 year free trial subscription to iModem Network
ISP provided with each iModem.
®
iNetWizard
Windows based programming aid
available free-of-change.
2005 Cermetek Microelectronics, Inc.
HIGH SPEED INTERNET MODEM FAMILY
-
Send/Retrieve Email. 2 I/O Ports 2400bps.
-
Send/Retrieve Email. 2 I/O Ports, V.90.
INTRODUCTION
Direct machine-to-machine interaction represents the
next logical extension of the internet. Cermetek internet
modem (iModem) products are designed to exploit the
internet to facilitate the utilization of machine-to-
machine interactions.
easily be transferred between systems and can be
transmitted/retrieved at will. Internet email provides low
cost,
near
real
Replacing conventional modems and long distance
telephone lines with local access internet connections
reduces fixed asset and maintenance costs, limits
communication expenses and saves money.
USER FRIENDLY INTERFACE LAYER
All Cermetek iModem products contain a user friendly
interface layer that provides the user transparent
access to the internet. This interface layer, consisting
®
of various @T
macro commands, has the look and feel
of conventional modem AT commands. With the @T
macro commands the user can direct the iModem to
compose, edit/modify, send, retrieve and delete email
messages. Internet and email activity status is reported
via the iModem's V.24 (EIA 232-E) serial interface.
The CH2124/60 products are the first generation
internet enabled devices.
sending and retrieving modest amounts of data. Email
messages of approximately 125 ASCII characters in
length can be stored in internal Flash ROM for later
transmission. Emails of larger length can be retrieved.
The CH2124/60 products are ideal for very low cost
controller applications and in applications where limited
data transfer is required.
OVERVIEW OF THE CH21XX iMODEM
A conceptual representation of the iModem in an
embedded environment is presented in Figure 1. As
can be seen in this figure, the iModem requires the
input of various internet parameters to function properly:
user name, user ID, user password, ISP telephone
number, ISP mail server address/name, local email
address/name, destination email address and user
specified email message/input port status.
Page 1
Using email, information can
time
multi-path
communication.
These products excel at
Document No. 607-0017 Revision I1 (05/05)
®

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Summary of Contents for Cermetek CH2124

  • Page 1 Emails of larger length can be retrieved. • UL 1950 and CSA C22.2 950 (Third Edition) Listed, The CH2124/60 products are ideal for very low cost reference UL File E104957. controller applications and in applications where limited •...
  • Page 2 • Delete email Functions Performed 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 internet email transceiver or as a high reliability analog ability to assign a unique unit name to each iModem modem.
  • Page 3 Host Supervised Control. This method is the most email depending on the command/status flag received. flexible, but requires issuance by the host processor of For CH2124/60 products, see Table 1 for a summary of ® the necessary @T commands in the required order ®...
  • Page 4: Key Feature

    Ring EIA-232-E or UART MODEM INTERFACE Figure 2. Functional Block Diagram of Cermetek CH2124/60 iModem Products. DESCRIPTION OF FUNCTIONAL BLOCKS AND a TTL LOW Pulse to Pin 8 indicating that the ISP Mail Server has accepted the email message. DISCUSSION OF BASIC OPERATIONS...
  • Page 5: Important Notice

    CH21XX DTE Speed. AS DELIVERED FROM THE FACTORY, the CH2160 iModem will only communicate IMPORTANT NOTICE with the DTE at 57.6kbps and the CH2124 at 2400bps. user wants change DTE/Host However, the user may modify the DTE speed with the communication speed to any speed other than the ®...
  • Page 6 Cermetek Microelectronics, Inc. High Speed Internet Modem Family ® Table 1. Summary of CH2124/60 Allowed @T Commands. Command Notes Description @T[A1][=n] 1,2,3,4 Enter destination email address, n. Maximum length is 34 ASCII characters. @T[D][] 1,2,7,12 Dialup ISP and send pre-configured Input Port Status email. Message type sent is specified by @TJn command or by K8 parameter for firmware versions 1.262 or greater.
  • Page 7 Select DTE baud rate 38400. n=12 Disabled. n=13 Select DTE baud rate 9600. n=14 Select DTE baud rate 4800. n=15 Select DTE baud rate 2400. (Default CH2124) n=16 Disabled. @T[K11][=n] 1,2,6,9, Enable/Disable Remote Dial-up Access. For n greater than 00, Remote Dial-up Access is enabled and n specifies the number of rings required before iModem will answer the incoming call.
  • Page 8 If TK5=02 and TK1=01, the email message will be sent using the Back Channel feature on the first dial attempt. Must set K11=00 to allow the CH2124/60 product to answer as a remote modem. This disables the Remote Dial-up Access feature.
  • Page 9 Cermetek Microelectronics, Inc. High Speed Internet Modem Family  Table 2. Summary of CH2124/60 iModem @T Result Messages. Result Message Explanation of Result Message BAD MESSAGE NUMBER 1. Occurs during retrieval (@TGn command) or during deletion (@TDKn command) when message number specified does not exist on POP3 server.
  • Page 10 Display iModem product type and firmware revision. Displays ISP configuration profile and User Defined email message. @TV0 Displays ISP configuration profile and User Defined email message. @TV1 Displays Input Port Status message. 2005 Cermetek Microelectronics, Inc. Page 10 Document No. 607-0017 Revision I1 (05/05)
  • Page 11: Fcc Registration

    3 or as described in applicable documents to the regulatory agency. more detail in Cermetek Application Note # 126, Cermetek offers a list of consultants to assist with this Supplemental PSTN Line Protection. process.
  • Page 12 (insert your company address). telephone company will give the user notice, in writing, to allow the users to make any changes necessary to maintain uninterrupted service. 2005 Cermetek Microelectronics, Inc. Page 12 Document No. 607-0017 Revision I1 (05/05)
  • Page 13: Data Set Ready

    REQUEST TO SEND. Active Low. Used for flow control. Should be tied Low when using SEND pin and when using @T commands for CH2160 only. DO NOT CONNECT for CH2124. 2005 Cermetek Microelectronics, Inc. Page 13 Document No. 607-0017 Revision I1 (05/05)
  • Page 14 B. In most environments, 2 terminal surge also survive FCC Part 68 surge testing. Refer to suppressors are adequate. For severe Cermetek Application Note #126, Supplemental environments, use an external 3 terminal PSTN Line Protection, for more details. Refer to device with an earth ground.
  • Page 15 4.7KΩ 10µf 300Ω CH21XX 74LS74 74HCT74 SENT Figure 4. Example Circuit for illumination of Email Accepted LED for CH2124/60. This circuit is not needed for the CH2165 product. 2005 Cermetek Microelectronics, Inc. Page 15 Document No. 607-0017 Revision I1 (05/05)
  • Page 16 Capacitive Load (TXD, DTR, RTS) Capacitive Load (RTS) IMPORTANT NOTE Cermetek recommends a minimum of 50ms inter-character delay when sending commands to the CH2124/60 iModem. Failure to do so could result in unpredictable performance. 2005 Cermetek Microelectronics, Inc. Page 16...
  • Page 17 Between all AT commands Minimum Reset Pulse msec If user supplied Note: 1. All CH2124 iModem devices perform an internal self-check upon reset and will not respond to commands issued during this self-check sequence. Table 7B. CH2160 iModem Electrical Specifications. Parameter Minimum...
  • Page 18 Cermetek reserves the right to make changes in specifications at any time and without notice. The information furnished by Cermetek in this publication is believed to be accurate and reliable. However, Cermetek assumes no responsibility for its use, or for any infringements of patents or other rights of third parties resulting from its use.

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Ch2160

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