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Detailed overview of GISMO digital receiver system components and configurations discussed in the kickoff meeting. Includes system block diagrams and specifications.
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GISMO Kickoff Meeting Digital Receiver & Processing System
RSS iRAP System Overview System Components • 3U Form Factor • 8 / 12 Slot Configurations • Conduction Cooled • Network Processor (NPM) • Switch Fabricate (SFM) • 8 FPGA Processor Slots • 2/4 Channel FPGA-based Digital Receiver (DARM) • FPGA-based Algorithm Processor (DARM) • FPGA-based Disk Striping CARD (DARM) • 3rd Party Cards • Ultra High Speed Communication Backplane (BRD) • Redundant Supplies GISMO Kickoff Meeting – 14 January 2009
DARM: Digital Receiver Module • Digital Receiver Configuration • Virtex 5 SX95T FPGA processor. • ADC Mezzanine Card. • Supports up to 4 IF signals. • Supports up to 18 bit ADCs. • Multi-Channel Digital Receiver • Provides support for 2 or 4 IF channels. • Up to 8 / 4 sub channels per IF. • Independent NCO, bandwidth and match filter per sub channel. • Up to 200 MHz bandwidth per IF. • Pre-summing capability (18 bit resolution). • Sub channels reconfigurable on the fly. System Block Diagram GISMO Kickoff Meeting – 14 January 2009
DARM: Digital Receiver (cont.) • Digital Receiver Data Bus • 10 Gb/s communications to NPM. • 6.4 Gb/s communications to each DARM • algorithm processor slot (up to four). • 6.4 Gb/s between adjacent receivers. • Supports PCIe communications. • Same card used as algorithm processor. • High Speed Digital Input Interface. • Conduction Cooled / High Altitude Operation System Block Diagram GISMO Kickoff Meeting – 14 January 2009
Switch Fabric Module SWITCH BOARD Power Conditioning / Distribution JTAG XJ 1 VddCore = 1 . 0 VddPE = 1 . 0 VddAPE = 1 . 0 VttPE = 1 . 5 SMBUS XJ 4 EPROM Clock Refernce pair CLK 0 - 4 associated with each L PCIe Interface e PCIe 1 I x 2 XJ 4 [ 1 : 0 ] 2 CLK 1 / 2 NC [ 3 : 2 ] PCIe 2 x 2 XJ 4 [ 1 : 0 ] 3 NC CLK 2 / 2 EP 0 [ 3 : 2 ] REFCLK - PCIe 3 Clock Circuitry XJ 4 x 2 [ 1 : 0 ] 4 CLK 3 / 2 NC [ 3 : 2 ] PCIe 4 x 2 XJ 4 [ 1 : 0 ] 5 CLK 4 / 2 NC [ 3 : 2 ] PCIe 5 x 2 XJ 2 [ 1 : 0 ] 6 CLK 5 / 2 NC PCIe Switch [ 3 : 2 ] PCIe 6 XJ 2 x 2 [ 1 : 0 ] 7 CLK 6 / 2 NC [ 3 : 2 ] PCIe 7 x 2 XJ 2 [ 1 : 0 ] 8 CLK 7 / 2 NC [ 3 : 2 ] PCIe 8 x 2 XJ 2 [ 1 : 0 ] 9 - NC CLK 8 / 2 [ 3 : 2 ] PCIe 9 x 2 XJ 5 [ 1 : 0 ] 10 EP N - 1 NC [ 3 : 2 ] CLK 9 / 2 Clock Reference pair PCIe 10 associated with each UpStream x 2 XJ5 [ 1 : 0 ] 11 PCIe Interface NC CLK 10 / 2 [ 3 : 2 ] 0 1 [ 3 : 0 ] [ 3 : 0 ] PCIe 0 x 8 XJ 3 CLK 0 / 2 NPM CLK uPC XJ 3 • SFM Features: • Implements PCI Express switch. • 12 ports, 48 lanes • x8 Root Complex • Provides communication to / from • processor slots: • 5 Gb/s data rate both ways. • Expandable to 10 Gb/s. . • Provides bus clocks. • Standard bus to support 3rd party cards. • Conduction cooled design. • Supports high altitude operations. GISMO Kickoff Meeting – 14 January 2009
Network Processor Module System Block Diagram • NPM Features: • Freescale MPC8548E Processor. • Supports: • 4 Gigabit Ethernet Engines. • x8 CompactPCIe Root Complex. • 4 SerDes (RocketIO). • I2C bus. • RS-232/RS-422. • Linux 2.6 Kernel. • Implements software layer • RSS System Object Language. • Conduction Cooled Design. • High Altitude Operations (70 Kft). Prototype / Development Board GISMO Kickoff Meeting – 14 January 2009
GISMO Nominal Configuration • Four Digital Receiver Cards (DARM) • Three cards dedicated to interferometric radar. • Four IF channels per digital receiver. • 40-60 MHz bandwidth per IF channel. • Four channel 12-bit ADC mezzanine card. • One card dedicated to WISE. • DARM or 3rd Party Card • SATA striping solution. • Network Processor / SFM • Communication to other subsystems, communication systems and users. • Future Expansion / Trade Space • Support up to 20 interferometer channels plus WISE. • Single cage or dual cage solution. • Real-time sequential and/or parallel processing and storage. GISMO Kickoff Meeting – 14 January 2009