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.

Myriad-RF 1 connectors, top side

Myriad-RF 1 connectors, bottom side

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

Connector	Name	Description
X2	+5 V supply	External +5 V supply.
X3	Digital IO	The FX10A-80P is a standard connector used to interface the RF board directly to the interface board or any other baseband board.
X4	TX Analogue I/Q	Connector used to supply Transmit analogue I/Q signals.
X5	RX Analogue I/Q	Connector used to measure Receive analogue I/Q signals.
X6	RXTEST	SMA connector providing connection to low band or high band RX input. Requires preselected RF switch configuration.
X7	TXTEST	SMA connector that provides conection to low band or high band TX output. Requires preselected RF switch configuration.
X8	Ext-CLK	Connector used to supply PLL clock externaly. Please refer to the GPIO Control Truth Table for more information.
X9	Ext-SPI	Connector used to control LMS6002DFN SPI registers externally. SPI registers are controlled via X3 connector. Please refer to SPI Options for more information.

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:

Pin Nr	Function	Type	Description
1	+5 V	In DC	+5 V power supply
2	+5 V	In DC	+5 V power supply
3	+5 V	In DC	+5 V power supply
4	+5 V	In DC	+5 V power supply
5	GND		Ground pin
6	GND		Ground pin
7	+3.3 V	In DC	+3.3 V power supply, optional
8	+3.3 V	In DC	+3.3 V power supply, optional
9	+3.3 V	In DC	+3.3 V power supply, optional
10	+3.3 V	In DC	+3.3 V power supply, optional
11	GND		Ground pin
12	GND		Ground pin
13	-		Not used
14	-		Not used
15	-		Not used
16	-		Not used
17	GND		Ground pin
18	GND		Ground pin
19	TXIQSEL	In CMOS	TX digital interface IQ flag
20	-		Not used
21	-		Not used
22	-		Not used
23	TXD0	In CMOS	DACs digital input, bit 0 (LSB)
24	TXD1	In CMOS	DACs digital input, bit 1
25	TXD2	In CMOS	DACs digital input, bit 2
26	TXD3	In CMOS	DACs digital input, bit 3
27	GND		Ground pin
28	GND		Ground pin
29	TXD4	In CMOS	DACS digital input, bit 4
30	TXD5	In CMOS	DACS digital input, bit 5
31	TXD6	In CMOS	DACS digital input, bit 6
32	TXD7	In CMOS	DACS digital input, bit 7
33	TXD8	In CMOS	DACS digital input, bit 8
34	TXD9	In CMOS	DACS digital input, bit 9
35	TXD10	In CMOS	DACS digital input, bit 10
36	TXD11	In CMOS	DACS digital input, bit 11
37	GND		Ground pin
38	GND		Ground pin
39	RXIQSEL	Out CMOS	RX digital interface IQ flag
40	-		Not used
41	-		Not used
42	-		Not used
43	RXD0	Out CMOS	ADCs digital output, bit 0 (LSB)
44	RXD1	Out CMOS	ADCs digital output, bit 1
45	RXD2	Out CMOS	ADCs digital output, bit 2
46	RXD3	Out CMOS	ADCs digital output, bit 3
47	GND		Ground pin
48	GND		Ground pin
49	RXD4	Out CMOS	ADCs digital output, bit 4
50	RXD5	Out CMOS	ADCs digital output, bit 5
51	RXD6	Out CMOS	ADCs digital output, bit 6
52	RXD7	Out CMOS	ADCs digital output, bit 7
53	RXD8	Out CMOS	ADCs digital output, bit 8
54	RXD9	Out CMOS	ADCs digital output, bit 9
55	RXD10	Out CMOS	ADCs digital output, bit 10
56	RXD11	Out CMOS	ADCs digital output, bit 11
57	GND		Ground Pin
58	GND		Ground Pin
59	RXCLK	In CMOS	RX digital interface clock
60	TXCLK	In CMOS	TX digital interface clock
61	-		Not used
62	-		Not used
63	GND		Ground pin
64	GND		Ground pin
65	GPIO0
66	RESET	In CMOS	Hardware reset, active low
67	GPIO1
68	SPI_MOSI	Out CMOS	Serial port data out
69	GPIO2
70	SPIO_MISO	In/Out CMOS	Serial port data in/out
71	-		Not used
72	SPI_CLK	In CMOS	Serial port clock, positive edge sensitive
73	GND		Ground pin
74	SPI-NCSO	In CMOS	Serial port enable, active low
75	CLK_IN	In CMOS	PLL reference clock input
76	-		Not used
77	GND		Ground pin
78	-		Not used
79	TXEN	In CMOS	Transmitter enable, active high
80	RXEN	In CMOS	Receiver enable, active high
81	GND		Ground pin
82	GND		Ground pin
83	GND		Ground pin
84	GND		Ground pin
85	GND		Ground pin
86	GND		Ground pin
87	GND		Ground pin
88	GND		Ground pin

X4 and X5 - Analogue IQ Connectors

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

Myriad-RF 1 X4 and X5 connectors

X4		X5
Pin Nr	Function	Pin Nr	Function
1	TXININ	1	RXOUTIN
2	TXINIP	2	RXOUTIP
3		3
4	TXINQP	4	RXOUTQN
5	TXINQN	5	RXOUTQP

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:

SPI Options
Components	SPI via FPGA	SPI via USB controller
R48	NF	0 Ohm
R58	NF	0 Ohm
R51	NF	0 Ohm
R46	NF	0 Ohm
R52	NF	0 Ohm

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:

LMS6002D RF Input/Output	GPIO0	GPIO1	GPIO2	Description
TX Out 1	X	X	0	High band output (1500 - 3800 MHz)
TX Out 2	X	X	1	Broadband output
RX In 1	1	1	X	Low band input (300 - 2200 MHz)
RX In 2	0	1	X	High band input (1500 - 3800 MHz)
RX In 3	0	0	X	Broadband input

Standalone Mode

The Myriad-RF board can operate in standalone mode. Setup for standalone mode is as follows:

• 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.

In this mode you are able to fully control the LMS6002DFN chip register and perform some basic RF measurements using IQ analogue inputs/outputs.

See Also

• Myriad-RF 1
• DE0-Nano Interface Board
• Zipper Interface Board
• RFDIO Interface
• Reference Development Kit Project Page