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

• Manufacturer Part Number: co561ad-s
• Description: The Co561ad-s, Ichip? Internet Controller?, Is Part Of A Family Of Intelligent Peripheral Devices That Provide Internet Connectivity Solutions To A Myriad Of Embedded Devices.
• Manufacturer: Connect One Ltd.

11-3500-00
5.2.3 Host Interface Signals
Signal
TXDH
RXDH
-CTSH
-RTSH
-DSRH
-DTRH
iChip CO561AD-S Datasheet
Type
O
O
O
I
I
I
Pin no.
26
30
59
58
15
63
Transmit Data Host: This pin supplies asynchronous
serial transmit data to the host.
Receive Data Host: This pin supplies asynchronous
serial receive data from the host.
When this pin is not used, connect it to VCC.
Clear-to-Send Host: -CTSH is active only when host
hardware flow control is enabled.
When -CTSH is LOW, flow control is enabled for the
host serial port, i.e., iChip may transmit to the host.
When -CTSH is HIGH, the iChip transmitter holds its
data in the serial port transmit register.
-CTSH is sampled only at the beginning of a frame
transmission. If -CTSH is raised while a character
frame is being transmitted, that frame will be
completed.
Connect -CTSH to -RTSH when not in use.
Ready to Send Host: -RTSH is active only when host
hardware flow control is enabled.
When -RTSH is LOW, flow control is enabled for the
host serial port, i.e., the host may transmit to iChip.
When -RTSH is HIGH, iChip indicates that its receiver
is busy and cannot receive data from host.
Connect -RTSH to -CTSH when not in use.
Data Set Ready Host: When -DSRH is LOW, it
indicates that the host is attached and ready to
communicate with iChip.
Connect -DSRH to GND when not in use.
Data Terminal Ready Host: When -DTRH is LOW, it
indicates to the host that iChip is attached and ready to
communicate.
Description
Pin Descriptions
5-6