SX-550-0700 Silex Technology, SX-550-0700 Datasheet - Page 24

• Manufacturer Part Number: SX-550-0700
• Description: WiFi / 802.11 Modules & Development Tools Wired Internal OEM 10/100 Serial Server
• Manufacturer: Silex Technology

Specifications of SX-550-0700

• Interface Type: RS-232, SPI
• Security: 802.1x
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Additional OEM Interface Signals
The output LED signals ORLED-, GRLED- and YELED- represent the state of the LEDs on the module.
Logic 0 indicates the LED is on, and Logic 1 indicates the LED is off. Buffers are recommended if LEDs
are to be driven on the end-user side.
The SWITCH signal is connected to a momentary pushbutton switch (Test Button) on the Evaluation
Daughtercard and is in the normally open position. Depressing the switch causes a short to ground. A
4.7 K-ohm pull-up resistor to +3.3 VDC is connected. The module’s processor monitors this signal. The
end-user can drive or use open-collector to this signal to either logic level or can monitor this signal as an
input. The Test Button is normally used either to send configuration information to a printer (button
momentarily pressed) or to reset the SX-550 to its default configuration (button held down for more than 5
seconds).
Part Number 40183-101
Pin
1
6
2
3
4
7
8
5
Table 10 RS-232 Cable Pinout Description
Silex SX-550 Developer's Guide
DTR (Data Terminal Ready) Output
DCD (Data Carrier Detect) Input
RTS (Request To Send) Output
DSR (Data Set Ready) Input
TxD (Transmit Data) Output
CTS (Clear To Send) Input
RxD (Receive Data) Input
Description
Ground
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