Myriad-RF 1 Connections

Basic Connections
The Myriad-RF 1 Board can be used as a standalone board or in conjunction with the DE0-Nano Interface Board or Zipper Interface Board for connection to a compatible FPGA development system.. The Myriad-RF board is connected to the interface board via a standard Hirose FX10A-80P connector, connecting its digital interface to the development kit. The following sections describe the Myriad-RF 1's on-board connections..

Myriad-RF 1 Board Connections
The analogue differential IQ interface is also available on Myriad-RF board and provided via X3 and X4 connectors. X6 and X7 are the RF connection for receive input and transmitter output on the RF board, see figure 3. The RF board is tuned to support band 1 (Tx 2140 MHz and Rx 1950 MHz) and broadband operation. The front end switches are configurable for selected receiver input and transmitter output via GPIOs. The GPIOs are controlled by the FPGA module.



The following table describes the pin assignment for each connector on the Myriad-RF 1 board.

X2 - +5 V Supply Connector
The pin header type connector used to supply +5 V to the Myriad-RF 1 board in standalone mode.

X3 - Digital IO Connector
The Myriad-RF board X3 connector (type FX10A-80P0) is pin compatible with the J1 connector on interface board. It provides the digital and SPI interface for the LMS6002DFN together with the supply voltage and GPIO control for the RF switches for the Myriad-RF 1 board. The pin descriptions on this connector are given in the table below:

X4 and X5 - Analogue IQ Connectors
Pin header type connectors on the Myriad-RF 1 board, providing analogue IQ signal I/O.



X6 and X7 - RF Input and Output
The X6 and X7 are SMA type connectors which provide Receive input and Transmit output to the LMS6002DFN, respectively. These are generally used to connect to antenna or test equipment.

X8 - External CLK Connector
The X8 is a micro miniature coaxial connector (MMCX8400). It is optional and used to supply external clock in standalone mode.

X9 - External SPI Connector
This is a pin header type connector used for SPI interface to LMS602DFN. This is optional, if the board is used in standalone mode.

SPI Options
The Myriad-RF 1 board offers two options for SPI communications: SPI communication is established via the FPGA and USB microcontroller located on the interface board; or SPI communication is established via the Myriad-RF 1's own USB microcontroller. In order to ensure stable SPI communication for your chosen option, the interface board may require a component change. Please note that NF denotes that component is not fitted:

GPIO Control Truth Table
The RF switches on the RF board are controlled via the GPIO0-2 logic signals, provided by the FPGA module on the interface board. This enables the user to choose RF input/output depending on the operation frequency. The truth table of the GPIO0-2 settings is shown below:

Standalone Mode
The Myriad-RF board can operate in standalone mode. Setup for standalone mode is as follows: In this mode you are able to fully control the LMS6002DFN chip register and perform some basic RF measurements using IQ analogue inputs/outputs.
 * Connect +5 V power supply to X2 connector on the Myriad-RF board.
 * Connect SPI control to X9 connector.
 * Connect wanted reference clock to X8 connector. Fit R49 resistor.