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C. Ingraham5-7 March 2001Data Processing Unit IFR1NCKU UCB Tohoku ISUAL Data Processing Unit (DPU) C. Ingraham.

Published byDennis Miles Modified over 8 years ago

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Presentation on theme: "C. Ingraham5-7 March 2001Data Processing Unit IFR1NCKU UCB Tohoku ISUAL Data Processing Unit (DPU) C. Ingraham."— Presentation transcript:

1 C. Ingraham5-7 March 2001Data Processing Unit IFR1NCKU UCB Tohoku ISUAL Data Processing Unit (DPU) C. Ingraham

2 5-7 March 2001Data Processing Unit IFR2NCKU UCB Tohoku DPU Functions Receives Commands Sends Status Sends Telemetry Manages Mass Memory Manages Power System Controls Imager Controls Spectrophotometer Commands Array Photometer Manages Instrument Heaters

3 C. Ingraham5-7 March 2001Data Processing Unit IFR3NCKU UCB Tohoku DPU Block Diagram HV Control (FPGA) Diag. Port (EGSE) CDI Sender STIM DCM Handshake Mass Memory I/F 8085 CPU Science Telemetry SOH Telemetry Command Rx Time Rx 16 KB PROM 128 KB RAM 128 KB EEPROM Sci Telem Command Sts. Commands PPS 4 PR 1 PR Spacecraft Interface (RS-422) DPU Board To Imager MCP, Imager Phosphor, SP1-6 HVPS Daylight Sensor To Imager To AP, SP To DCM, PC To Imager To SP To DCM To Mass Memory

4 C. Ingraham5-7 March 2001Data Processing Unit IFR4NCKU UCB Tohoku DPU Interfaces Science Telemetry to S/C Commands from S/C SOH to S/C PPS from S/C CDI Commands to Instruments, PC, MM Stim Pulses to Instruments Mass Memory Read/Write HV Control (8 Supplies) Power from PC

5 C. Ingraham5-7 March 2001Data Processing Unit IFR5NCKU UCB Tohoku DPU Development Status (1) Breadboard Unit (BB) Built Functions Implemented and Working: –CPU, PROM, SRAM, EEPROM, Debug Port –Spacecraft Interface: Command, Status PPS, Science Telemetry Simulator –CDI Command/Data Interface Functions to be Implemented: –HV Control, Some LVPS Controls –MM Interface, Stim

6 C. Ingraham5-7 March 2001Data Processing Unit IFR6NCKU UCB Tohoku DPU Development Status (2) Baseline Functioning with GSE AEP Bus and Instrument Harness Defined Ready for Test with Power Controller & LVPS PCB Mechanical Outline Complete PCB Design to start 1 April All EEE Parts Selected Most EEE Parts Ordered and Received Remaining Flight Parts to be Ordered by 1 April

7 C. Ingraham5-7 March 2001Data Processing Unit IFR7NCKU UCB Tohoku DPU Development Status (3) Released Drawings: –AEP Bus Definition (8662) –Instrument Harness Definition (8580) –DPU Breadboard Schematic (8578) –DPU Breadboard BOM (8581) –DPU PCB Outline (8505) –ISDPGLU Actel Package (8509)

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