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

• Manufacturer Part Number: co661al-l
• Description: The Co661al-l Ichip Lan? 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 LAN Internet Controller is an integrated, firmware-driven, self-
contained Internet engine that is available in a 68-pin PLCC package. iChip LAN accepts
simple ASCII commands from a host CPU via a serial or parallel communication channel
and manages an Internet communication session through an Ethernet LAN connection.
For 10BaseT Ethernet applications, iChip LAN CO661AL-L includes the firmware and
pin-out necessary to drive an external Crystal LAN CS8900A. For 10/100BaseT Ethernet
applications, iChip LAN includes the firmware and pin-out necessary to drive an external
SMSC LAN91C111 or ASIX AX88796L LAN controller.
iChip LAN 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 LAN CO661AL-L 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 or using its configuration Web site.
3.2 Technical Specifications
3.2.1 General
iChip LAN 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 or 8-bit
parallel BUS (with some external circuitry) connects iChip LAN to the host processor.
Programming, monitoring and control are fully supported using Connect One’s AT+i
extension to the standard AT command set.
3.2.2 Operation
All iChip LAN Internet and parameter operations are controlled by AT+i commands.
3.2.2.1 Command Mode
iChip LAN commands are implemented using the AT+i command set. Command flow
exists only on the host serial channel between the host and iChip LAN.
3.2.2.2 Internet Mode
iChip LAN enters Internet mode after being issued an Internet command such as to send
or receive an Email message, open a socket, etc. While in this mode, AT+i commands are
supported to monitor and control the process when needed.
iChip LAN CO661AL-L Datasheet
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