The LimeSDR-QPCIe board provides a hardware platform for developing and prototyping high-performance and logic-intensive digital and RF designs using Intel’s Cyclone V FPGA and Lime Microsystems transceivers.
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FPGA Features
- Cyclone V, 5CGXFC7D7F31C8N device in 896-pin FBGA package
- 150’000 logic elements
- 6860 Kbits embedded memory
- 312 embedded 18x18 multipliers
- 7 PLLs
- 9 Transceivers (2.5Gbps)
- PCIe Hard IP Blocks
- 2 Hard Memory Controllers
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RF
- 2x LMS7002M, FPRF transceivers
- Onboard RSSI measurement circuits
- Onboard loopback control switches
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DACs and ADCs
- 2x DAC5672A, dual, 14-bit, Digital-To-Analog converters
- 1x ADS424, Dual-Channel, 14-bit, Analog-To-Digital converter
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Memory Devices
- 4 x 2Gbit DDR3 SDRAM (128M x 16)
- 4Mbit flash for FX3 firmware
- 128Mbit flash for FPGA gateware
- 2 x 128Kbit and 2 x 512Kbit EEPROMs for LMS MCU firmware, LMS MCU data
- 1 x 128K EEPROM for FX3 or FPGA data
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Connections
- microUSB3.0 (type B) connector
- PCIe edge connector
- Coaxial RF (U.FL) connectors
- 2x PMOD header (0.1” pitch)
- FPGA (0.1” pitch) and FX3 (0.05” pitch) JTAG connectors
- 12V DC power jack and pinheader
- LVDS connector (0.05” pitch)
- Fan connector (12V/5V)
- PCIe 6-pin power connector
- Holder for coin cell CR1220 battery
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Clock System
- 30.72MHz VCTCXO (precision: ±1 ppm initial, ±4 ppm stable).
- Possibility to lock VCTCXO to external clock using ADF4002 or tune VCTCXO by onboard DAC (AD5662)
- Programmable clock generator for the FPGA reference clock input or LMS PLLs
- VCTCXO clock output for external device synchronization.
- 1x 100 MHz, 4 x 125MHz crystal oscillators for FPGA
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Miscellaneous devices
- LM75 Digital temperature sensor with 2-Wire Interface.
- DS3231 real-time clock.
- M0578-A3 GPS/GNSS module receiver
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Board Size 190mm x 106.7mm (7.48” x 4.20”)
The directory structure is as follows:
hardware/<version>/
Libraries/ - Component Libraries
OutputJobs/ - Output jobs
PCB/ - PCB design
Project Outputs/ - BOM, rule check reports, Gerbers, pick & place files, PDFs
Schematics/ - Schematic diagrams
The hardware designs are licensed under a Creative Commons Attribution 3.0 Unported licence.