ISUAL AEP Data Processing Unit DPU C Ingraham

DPU Functions • • • NCKU Receives Commands Sends Status Manages Mass Memory Manages

DPU Block Diagram Spacecraft Interface DPU Board 8085 CPU To Imager MCP, Imager Phosphor,

DPU Interfaces • • • NCKU Science Telemetry (from MM) to S/C Commands from

DPU Development Status (1) • Breadboard Unit (BB) Built and Working: – CPU, PROM,

DPU Development Status (2) • • NCKU CMD, SOH, TLM Functioning with GSE AEP

DPU Development Status (3) • Released Drawings: – – – NCKU UCB AEP Bus

DPU Schematic (1 of 4) NCKU UCB Tohoku CDR 9 July, 2001 Data Processing

DPU Schematic (2 of 4) NCKU UCB Tohoku CDR 9 July, 2001 Data Processing

DPU Schematic (3 of 4) NCKU UCB Tohoku CDR 9 July, 2001 Data Processing

DPU Schematic (4 of 4) NCKU UCB Tohoku CDR 9 July, 2001 Data Processing

ISDPGLU Actel Pinout NCKU UCB Tohoku CDR 9 July, 2001 Data Processing Unit C.

ISDPPWR Actel Pinout NCKU UCB Tohoku CDR 9 July, 2001 Data Processing Unit C.

DPU Printed Circuit Board NCKU UCB Tohoku CDR 9 July, 2001 Data Processing Unit

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ISUAL AEP Data Processing Unit (DPU) C. Ingraham NCKU UCB Tohoku CDR 9 July, 2001 Data Processing Unit C. Ingraham

DPU Functions • • • NCKU Receives Commands Sends Status Manages Mass Memory Manages Power System Controls Telemetry from Mass Memory Controls Imager Controls Spectrophotometer Commands Array Photometer Manages Instrument Heaters UCB Tohoku CDR 9 July, 2001 Data Processing Unit C. Ingraham 2

DPU Block Diagram Spacecraft Interface DPU Board 8085 CPU To Imager MCP, Imager Phosphor, SP 1 -6 HVPS HV Control (FPGA) (RS-422) Science Telemetry SOH Telemetry Daylight Sensor Diag. Port (EGSE) To Imager To AP, SP To DCM, PC Command Rx CDI Sender Time Rx STIM 32 KB PROM To DCM Handshake 128 KB RAM To Mass Memory I/F 128 KB EEPROM To Imager To SP NCKU UCB Tohoku CDR 9 July, 2001 Data Processing Unit 4 PR 1 PR Sci Telem Command Sts. Commands PPS C. Ingraham 3

DPU Interfaces • • • NCKU Science Telemetry (from MM) 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 UCB Tohoku CDR 9 July, 2001 Data Processing Unit C. Ingraham 4

DPU Development Status (1) • Breadboard Unit (BB) Built and Working: – CPU, PROM, SRAM, EEPROM, Debug Port – Spacecraft Interface: • Command, Status • PPS, Science Telemetry Simulator – CDI Command/Data Interface • Engineering Model (EM) Built • Functions to be Implemented in FPGA: – HV Control, Some LVPS Controls – MM Interface, Stim NCKU UCB Tohoku CDR 9 July, 2001 Data Processing Unit C. Ingraham 5

DPU Development Status (2) • • NCKU CMD, SOH, TLM Functioning with GSE AEP Bus and Instrument Harness Defined In Test with Power Controller & LVPS EM PCB Designed and Built All EEE Parts Selected and Ordered Most EEE Parts Received Remaining Flight Parts to be Received by August UCB Tohoku CDR 9 July, 2001 Data Processing Unit C. Ingraham 6

DPU Development Status (3) • Released Drawings: – – – NCKU UCB AEP Bus Definition (8662) Instrument Harness Definition (8580) DPU EM Schematic (8503) DPU EM BOM (8504) DPU PCB Design (8497) ISDPGLU Actel Package (8509) Tohoku CDR 9 July, 2001 Data Processing Unit C. Ingraham 7

DPU Schematic (1 of 4) NCKU UCB Tohoku CDR 9 July, 2001 Data Processing Unit C. Ingraham 8

DPU Schematic (2 of 4) NCKU UCB Tohoku CDR 9 July, 2001 Data Processing Unit C. Ingraham 9

DPU Schematic (3 of 4) NCKU UCB Tohoku CDR 9 July, 2001 Data Processing Unit C. Ingraham 10

DPU Schematic (4 of 4) NCKU UCB Tohoku CDR 9 July, 2001 Data Processing Unit C. Ingraham 11

ISDPGLU Actel Pinout NCKU UCB Tohoku CDR 9 July, 2001 Data Processing Unit C. Ingraham 12

ISDPPWR Actel Pinout NCKU UCB Tohoku CDR 9 July, 2001 Data Processing Unit C. Ingraham 13

DPU Printed Circuit Board NCKU UCB Tohoku CDR 9 July, 2001 Data Processing Unit C. Ingraham 14