co661al-s Connect One Ltd., co661al-s Datasheet - Page 11

• Manufacturer Part Number: co661al-s
• Description: The Co661al-s Ichip? Internet Controller? Is Part Of A Family Of Intelligent Peripheral Devices That Provides Internet Connectivity Solutions To A Myriad Of Embedded Devices.
• Manufacturer: Connect One Ltd.

Functional Description
3 Functional Description
3.1 Overview
Connect One’s iChip Internet Controller is an integrated, firmware-driven, self-contained
Internet engine that is available in a 68-pin PLCC package. iChip accepts simple ASCII
commands from a host CPU via a serial or parallel communication channel and manages
an Internet communication session through a PSTN or cellular modem. iChip supports
commands to communicate via TCP and UDP sockets; to send and receive Email, Web
and WAP pages/files; utilize FTP and Telnet; or to serve as a serial-to-Internet router.
iChip CO661AL-S contains non-volatile flash memory to store its firmware and Internet-
related configuration parameters. Remote firmware and parameter updates are supported
through the local host link, by Email, using a Web browser or by direct modem
communications.
3.2 Technical Specifications
3.2.1 General
iChip constitutes a complete Internet messaging solution for non-PC embedded devices.
It acts as a mediator device to completely offload the host processor of Internet-related
software and activities. An industry-standard asynchronous serial link connects iChip to
the host processor. Programming, monitoring and control are fully supported using
Connect One’s AT+i extension to the standard AT command set.
An additional industry-standard asynchronous serial link connects iChip CO661AL-S to a
standard serial modem. iChip supports transparent direct host-to-modem operations using
the standard AT command set.
3.2.2 Operation
All iChip Internet and parameter operations are controlled by AT+i commands.
3.2.2.1 Transparent Mode
iChip CO661AL-S 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 CO661AL-S transparently echoes the AT commands to the modem, as
well as echoing the modem responses back to the host. In addition, hardware flow control
signals are emulated on the host side to reflect the levels set by the modem and vice-
versa. iChip CO661AL-S 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.
iChip CO661AL-S Datasheet
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