sdr experiments

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