2: Description and Specifications
MatchPort b/g Pro Integration Guide
11
Ethernet LED Connections
The E_LINKLED and E_ACTLED signals are driven by the PHY. They are active low.
Recommended connections on the target board are shown below.
Figure 2-3. Recommended LED Connections
Warning:
The MatchPort b/g Pro has two 4.7K pull-ups on the E_LINKLED
and E_ACTLED signals to set up the PHY’s LED Indicator Mode as Ethernet
Link and Activities at Power On Reset (POR). Do not connect these two
signals with any pull-down resistors as they may corrupt the logic level on
these two signals at POR, causing undesired operation.
Wireless LED Connections
The W_LINKLED is driven by the Radio Module. Active low. Open drain. 10mA max.
Recommended connections on the target board are shown below.
The LED is activated when either the receiver or transmitter is active. With WLAN power
management disabled, the receiver is always active when the transmitter is not and thus
the LED always on when WLAN is the enabled interface. With WLAN power
management enabled, receiver and transmitter are turned on selectively and thus the
LED flickers.
Figure 2-4. Recommended LED Connections
Antenna Mating Connector
An antenna connection is made via the U.FL style connector on the MatchPort. Lantronix
offers two cable options, reverse-SMA to U.FL (P/N 500-180-R) or U.FL to U.FL (P/N
500-181-R).
Содержание MatchPort b/g Pro
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