Sdr p

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sdr experiments

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Sdr p

  1. 1. Software Defined Radio Platform Elements Universal digital modulator for multichannel, wideband and phased array applications Cross Connect Switch (CPLD) Digital Transmit Processor (AD6622) Cross Connect Switch (CPLD) Cross Connect Switch (CPLD) Digital Transmit Processor (AD6622) 14-Bit DAC (AD9772) Cross Connect Switch (CPLD) Digital Transmit Processor (AD6622) Programmable output crossconnect implemented in CPLD Digital Transmit Processor (AD6622) 14-Bit DAC (AD9772) Universal digital modulator card with Xilinx XC2S50 FPGA, AD6622 digital up-converter, XC95144XL CPLD based crossconnects and AD9772A interpolating DACs 14-Bit DAC (AD9772) 14-Bit DAC (AD9772) Integrated digital modulator for multichannel and phased array applications: The modulator could be used as mezzanine card on DSP board This integrated digital modulator board is the first step towards the universal SDR platform elements contains technology enhancements including: •FPGA firmware update trough the serial control interface •On-board power regulator and clock oscillator •Universal, programmable output cross-connects •Interleaving modulation for wideband applications •Board stacking (mezzanine) capability to DSP board Desktop PCI based universal AD and DA converter card The first PCI based IO card (DCU-202) with one input and one output channels using up to 80MHz sampling clock and slave mode PCI interface Dynamic range performance ADC: 40MHz sampling clock, 8192points FFT Internally generated spurious signals are below -90dBFS Control EEPROM FPGA JTAG PROM JTAG RS-232 serial control interface I2C Different front-end configurations FPGA CFG Control BUS Front-end BUS SCLK OSC CLK DRV /2, /4 X2, X4 www.sagax . www.sagax.hu Dedicated data connection FPGA LOGIC and DSP resource PCI HOST Interface Clock lines External TRG in/out External CLK in/out Config EEPROM MCU Sampling CLK Local CLK PCI BUS LCLK OSC Technology enhancements include: •FPGA firmware booting from EEPROM •Using slave mode PCI interface chip •Local bus logic implementation in FPGA •Deep FIFO memory for samples •External bus connection capability •External triggering and clocking The development of universal converter desktop PCI card family continued on this architecture Sagax, Ltd. Sagax, Ltd. Haller u. 11-13. 1096 Budapest, HUNGARY

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