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Difference between revisions of "Myriad-RF 1 Connections"

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* [[RFDIO|RFDIO Interface]]
 
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* [https://myriadrf.org/projects/rdk/ Reference Development Kit Project Page]
 
* [https://myriadrf.org/projects/rdk/ Reference Development Kit Project Page]
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Latest revision as of 15:01, 15 September 2015

1 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..

2 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.

2.1 X2 - +5 V Supply Connector

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

2.2 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

2.3 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

2.4 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.

2.5 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.

2.6 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.

2.7 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

3 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

4 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.

5 See Also