co561ad-d Connect One Ltd., co561ad-d Datasheet - Page 13

• Manufacturer Part Number: co561ad-d
• Description: The Co561ad-d Ichip Plus? Internet Controller? Is A Low-cost Intelligent Peripheral Device That Provides Internet Connectivity Solutions To A Myriad Of Embedded Devices.
• Manufacturer: Connect One Ltd.

Functional Description
3.2.5 Host Serial Connection
iChip Plus supports a full-duplex, TTL-level serial communications link with the host
processor. Full EIA-232-D hardware flow control, including Tx, Rx, CTS, RTS, DTR,
and DSR lines, is supported.
3.2.6 Serial Connection to Analog Modem
iChip Plus CO561AD-D supports a full-duplex, TTL-level serial communications link
with the modem device. Full EIA-232-D hardware flow control, including Tx, Rx, CTS,
RTS, DTR, DSR and CD lines, is supported. It does not support the RI line.
3.2.7 Hardware and Software Flow Control
Hardware flow control is supported between the host CPU and iChip Plus and between
iChip Plus and the modem. Flow control is programmed via the AT+iFLW command.
The default flow control methods are set to “Wait/Continue” software flow control
between iChip Plus and the host. This method is similar to XON/XOFF software flow
control.
The hardware flow control method frees the host CPU from monitoring and handling the
software flow control. The host can program iChip Plus to either use hardware flow
control or to use “Wait/Continue” software flow control between iChip Plus and the host
CPU. The flow control mechanism is based on the RTS/CTS signals.
3.2.8 Local BUS Connection to Ethernet Controller
iChip Plus directly supports a Crystal LAN CS8900A or Realtek RTL8019AS IEEE
802.3 Ethernet controller in 16-bit memory mode. The Interrupt signal is directly
connected to a dedicated input pin.
iChip CO561AD-D Datasheet
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