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On
TCP is connected
LINK
On
EZL-80C is connected to the WLAN
RXD
Blinks
Receiving data from the serial
TXD
Blinks
Transmitting data to the serial
LAN_
RXD
Blinks
Receiving data from the WLAN
LAN_
TXD
Blinks
Transmitting data to the WLAN
RTS
On
There are enough rooms to receive data
Off
There aren‟t enough rooms to receive
data
CTS
On
Counterparts‟ buffer is enough to receive
data
Off
Counterparts‟ buffer isn‟t enough to
receive data
ISP
/Serial
Config
mode
PWR
On
EZL-80C is in the ISP
/ Serial Config mode
STS
Blinks rapidly
LINK
Off
3.2.4.
wireless LAN Interface
EZL-80c, a modular product, requires a CF wireless LAN card.
For the wireless LAN card, use a CF card, compatible with Intersil‟s Prism 2.5 or
Prism 3.0.
3.3.
Serial Interface
The serial port is implemented on 3.3V TTL level and can communicate with a UART
(Universal Asynchronous Receiver and Transmitter).
3.3.1.
RTS/CTS Flow Control
RTS/CTS hardware flow control is used to avoid loss of data if there is an excessive
amount of data. For instance, if the network causes delay in data transmission when the
user device sends a large amount of data continuously, the buffer in the serial port may
