DVK-WLM400 Laird Technologies, DVK-WLM400 Datasheet - Page 9

• Manufacturer Part Number: DVK-WLM400
• Description: DEVELOPMENT KIT WISM+
• Manufacturer: Laird Technologies
• Type: Transceiverr

Specifications of DVK-WLM400

• Frequency: 2.4GHz
• Processor Series: WISM+
• Silicon Manufacturer: Laird Technologies
• Kit Application Type: Communication & Networking
• Application Sub Type: Wi-Fi Intelligent Serial
• Kit Contents: PCB, 2x Antennas, Power Adapter, USB Cable, RS-232
• Rohs Compliant: Yes
• For Use With/related Products: WLM400
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

2.2 Host Interfaces
2.2.1 Host Com Port
This is a DCE COM port which operates at RS-232 levels. It is a male DB9 connector which is meant to be connected
to a PC serial port via the serial cable (female to female) provided with the Dev Kit.
DB9
PIN#
© Laird Technology 2010
1
2
3
4
5
6
7
8
9
PIN NAME
DB9_DCD
DB9_TXD
DB9_RXD
DB9_DTR
GROUND
DB9_DSR
DB9_RTS
DB9_CTS
DB9_RI
DB9
I/O
O
O
O
O
0
-
I
I
I
WISM+
PIN #
59
12
10
6
9
8
7
-
-
UART_TXD
UART_RXD
CONNECTED
UART_DTR
DSR_READY
UART_RTS
UART_CTS
PIN NAME
WISM+
-
-
DESCRIPTION
The WISM+ CONNECTED
232 levels (and drives pin 1 of the DB9) and indicates
to the PC that we have joined a network. When
“connected” WISM+ drives pin 59 pin low and is level
translated to a positive RS-232 level at the DB9.
This pin is transmit data from the WISM+ back to the
PC driven through a RS-232 level translator.
This is receive data from the PC to the WISM+. An
RS-232 receiver converts RS-232 levels at the
connector to CMOS levels for WISM+.
This is an output from the PC and is converted to
CMOS levels to drive the WISM+ UART_DTR
CURRENTLY THIS PIN HAS NO FUNCTION.
This is tied to Dev Kit GROUND.
When the WISM+ cannot take any more data (all
buffers are full) it will assert DSR_READY
low—which is translated to a high on DB9 pin 6. -
This pin becomes DTR at the PC-
This is converted to CMOS levels to drive the WISM+
WISM+ from transmitting serial data when
asserted- ONLY IF FLOW CONTROL IS ENABLED
ON WISM+.
WISM+ UART_CTS
translator to signal the host that it is ready to accept
serial data. WISM+ drives this pin low when it can
accept serial input from the host (creating a
positive RS-232 level voltage to the PC). If WISM+
cannot accept serial input, it drives the pin high
(creating a negative RS-232 voltage).
This pin should be ignored at the host.
UART_RTS
input. The host can hold off the
Version 1.00
WISM+ DVK MANUAL
pin drives an RS-232 level
pin is translated to RS-
pin
Page 4
input.