© Copyright 2013 Zephyr Engineering, Inc
UDPSDR-
HF1 User’s Manual
4
Version 1.1
– 16 September 2013
1.2.1.1 USB Connector (X201)
The USB connector is used to program both the FPGA configuration RAM and the
BeMicroSDK configuration flash memory. The BeMicroSDK appears to the host PC as
an Altera Byte Blaster.
The USB connector can also be used to power the SDRstick
TM
HF1 when it is
connected to a port that can supply sufficient power. USB 2.0 ports, USB 3.0 ports and
powered hubs can power this 400mA load. A 5V well regulated power supply on J3 (or
J2) can be used instead of the BeMicroSDK USB connector.
WARNING: NEVER APPLY EXTERNAL POWER TO J3/P1 WHILE PLUGGED INTO
ANY USB PORT! THIS CAN DAMAGE YOUR USB PORT!
Note
: In order to get the SDRstick
TM
HF1 to power up from a Windows PC USB port, the
Altera Byte Blaster driver must be installed. A Byte Blaster driver is not needed for PCs
running Linux in order to power up the SDRstick
TM
HF1.
1.2.1.2 Ethernet Connector (X602)
The Ethernet connector (X602) is a standard RJ-45 connector. The BeMicroSDK
supports 10/100Mbps Ethernet, but 100Mbps is required for SDRstick
TM
HF1. This
connection is used for the receive data stream to a host PC or network switch.
1.2.1.3 MEC Edge connector (X701)
The 80-contact MEC-style edge connector plugs into the UDPSDR-HF1 front-end
board. All of the digital signals between the HF1 and the BeMicroSDK use this
connector. Pin 1 is clearly marked on both the BeMicroSDK and the HF1 board.
Note
: The pin numbering is different than that shown on the Samtec connector data
sheet. Be sure to only plug the boards together in the orientation shown in Figure 2.
1.2.2 BeMicroSDK LEDs
There are two groups of LEDs on the BeMicroSDK: a group of 3 status LEDs below the
RJ-45 connector and a group of 8 user LEDs alongside the MEC connector.
1.2.2.1 Status LEDs (V701, V703, V704)
The leftmost status LED (V701) is the green power indicator LED. The middle status
LED (V703) is yellow, and is lit when the FPGA CONF_DONE pin goes high. The
rightmost status LED (V704) is red and lights when pin 4 of the MEC connector is pulled
low (PWREN2# asserted). Since HF1 never drives this pin low, this LED should never
be lit. See Figure 5 for the status LED locations.
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