co711ag Connect One Ltd., co711ag Datasheet - Page 13

• Manufacturer Part Number: co711ag
• Description: Ichip? Co710ag And Ichipsec? Co711ag Internet Controllers? Are High-performance, Firmware-based Intelligent Peripheral Devices That Provide Internet Connectivity Solutions For A Wide Range Of Embedded Devices.
• Manufacturer: Connect One Ltd.

Connect One
Functional Description
iChip connects to serial modems and to an Ethernet controller for Internet access. An
AT+i command is provided to switch between the serial modem and Ethernet.
4.2.2 Operation
All iChip Internet and parameter operations are controlled by AT+i commands.
4.2.2.1 Transparent Mode
In modem communications mode, iChip defaults to Transparent mode, allowing the
host to control the modem device directly. Control is implemented by issuing standard
AT commands to iChip. In this mode, iChip transparently echoes the AT commands
to the modem, as well as echoing the modem responses back to the host. iChip
supports interlacing AT+i and AT commands while the modem is in Command mode.
When the modem is put into Data mode by issuing a dial command, Transparent
mode is sustained throughout the Data mode session.
4.2.2.2 Command Mode
iChip commands are implemented using the AT+i command set. Command flow
exists only on the host serial link between the host and iChip.
4.2.2.3 Internet Mode
iChip enters Internet mode after being issued an Internet command such as to send or
receive an email message, open a socket, etc. iChip attempts to establish an Internet
connection and carry out the required activity through the communication platform
link. While in this mode, AT+i commands are supported to monitor and control the
process when needed.
4.2.2.4 Direct Modem Firmware Update Mode
In a modem configuration, issuing an AT+iFU command enters this mode. iChip
monitors the modem for an incoming call by detecting the ‘RING’ response. When
called, iChip instructs the modem to answer the call and assumes a YMODEM
session to receive a file containing a firmware update. The incoming file contents are
downloaded and authenticated. If the new firmware image checks out, the existing
firmware is replaced in the on-chip flash memory and iChip is reinitialized.
4.2.2.5 SerialNET Mode
iChip SerialNET mode extends a local asynchronous serial link to a TCP or UDP
socket across a LAN or Internet. Its main purpose is to allow simple devices, which
normally interact over a serial line, to interact in a similar fashion across a network,
without requiring any changes in the device itself. iChip contains a set of associated
operational parameters which define the nature of the desired network connection.
iChip supports both Server and Client modes in SerialNET mode. AT+i commands
are not required to operate SerialNET mode. Thus, SerialNET mode may be used in
existing systems with little or no need to modify the application program.
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iChip CO710AG/iChipSec CO711AG Data Sheet