co711ag Connect One Ltd., co711ag Datasheet - Page 26

• Manufacturer Part Number: co711ag
• Description: Ichip? Co710ag And Ichipsec? Co711ag Internet Controllers? Are High-performance, Firmware-based Intelligent Peripheral Devices That Provide Internet Connectivity Solutions For A Wide Range Of Embedded Devices.
• Manufacturer: Connect One Ltd.

Connect One
6.2.3 Host Serial Interface Signals
TXDH
RXDH
-CTSH/PIBF
-RTSH/-PERR
-DSRH/-PRES
iChip CO710AG/iChipSec CO711AG Data Sheet
Signal
Type Pin No.
O
O
I
I
I
D11
E10
J10
D9
D8
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 not used, this pin should be connected to VDDi/o.
Must be connected to ABDD (H10) pin to support auto
baud rate.
In Serial mode, 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.
In Parallel mode, Parallel Input Buffer Full: when
HIGH, indicates that the host has sent a data byte
which has not yet been read.
In Serial mode, 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.
In Parallel mode, Parallel Error: When LOW,
indicates to the host that an error has occurred in the
parallel interface circuit.
In Serial mode, 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.
In Parallel mode, Parallel Reset: when LOW,
generates a reset to the parallel interface.
Description
Pin Descriptions
6-7