co561ad-d Connect One Ltd., co561ad-d Datasheet - Page 21

• 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.

Signal
-RIH/-SER
-DTRH/DMSEL
iChip CO561AD-D Datasheet
Type Pin No.
O
O
20
63
In dial-up mode, this pin functions as –RIH. In
LAN mode, it functions as –SER.
Ring Indicator Host: This pin indicates to the
host that the modem communication device
detects a Ring signal.
Serial Indicator Host: When LOW, indicates that
iChip Plus may receive a legal character from the
host.
During firmware update, -CDH and -RIH are
used to display the firmware update status.
After reset, this pin’s functionality is DMSEL.
During normal operation, this pin acts as
–DTRH.
Data Terminal Ready Host: When -DTRH is
LOW, it indicates to the host that iChip Plus is
attached and ready to communicate. When this
pin is held LOW during power up for at least 1
second, and no longer than 5 seconds, iChip Plus
will enter auto baud rate mode. When this pin is
held LOW during power up for more than 5
seconds, iChip Plus will automatically enter
firmware update mode.
Description
Pin Descriptions
5-6