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

• Manufacturer Part Number: co661al-d
• Description: Co661al-d Ichip Plus? 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 Plus Internet Controller is an integrated, firmware-driven, self-
contained Internet engine that is available in a 68-pin PLCC package. iChip Plus accepts
simple ASCII commands from a host CPU via a serial communication BUS and manages
an Internet communication session to send and receive Email and Web and WAP
pages/files, utilize FTP and Telnet, serve as a serial-to-Internet router, or to manipulate
sockets through a linked modem or Ethernet communications platform.
For 10BaseT Ethernet applications, iChip Plus CO661AL-D includes the firmware and
pin-out necessary to drive an external Crystal LAN CS8900A. For 10/100BaseT Ethernet
applications, iChip Plus includes the firmware and pin-out necessary to drive an external
SMSC LAN91C111 or ASIX AX88796L Ethernet LAN controller.
iChip Plus contains a non-volatile FLASH memory to store its firmware and Internet-
related operational parameters. Remote firmware and parameter updates are supported
through the local host link, by Email, using a Web browser or directly through the
communications platform.
3.2 Technical Specifications
3.2.1 General
iChip Plus 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 Plus to the host processor. Programming, monitoring and control are fully
supported using Connect One’s AT+i extension to the standard AT command set.
iChip Plus 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.
3.2.2 Operation
All iChip Plus Internet and parameter operations are controlled by AT+i commands.
3.2.2.1 Transparent Mode
In modem communications mode, iChip Plus defaults to Transparent mode, allowing the
host to control the modem device directly. Control is implemented by issuing standard
AT commands to iChip Plus. In this mode, iChip Plus transparently echoes the AT
commands to the modem, as well as echoing the modem responses back to the host. iChip
Plus 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 Plus CO661AL-D Datasheet
3-1