GISMO Kickoff Meeting

1
GISMO Kickoff Meeting

• Digital Receiver Processing System

2
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

3
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
4
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
5
Switch Fabric Module

• 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.

6
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
7
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.