![]() ![]() LimeSDR-USB 1v4 Development Board Connectorsīoard components description listed in the Table 1 and Table 2. There are three connector types – data and debugging (USB3.0, FPGA GPIO and JTAG), power (DC jack and external supply pinheader) and high frequency (RF and reference clock).įigure 3. LimeSDR-USB board version 1.4 picture with highlighted major connections presented in Figure 3. Programmable clock generator for the FPGA reference clock input or LMS PLLs.Possibility to lock VCTCXO to external clock or tune VCTCXO by onboard DAC. ![]() 30.72MHz VCTCXO (precision: ☑ ppm initial, ±4 ppm stable).FPGA and FX3 JTAG connectors (0.05” pitch).microUSB3.0 (type B) connector or USB3.0 (type A) plug.2 x 128K (16K x 8) EEPROMs for LMS MCU firmware, LMS MCU data.Possibility to update FPGA gateware by using FX3 (USB). ![]()
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