Hardware/CubeSat Gumstix
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! Type || FPGA Rack || Schematic || UCF || Description | ! Type || FPGA Rack || Schematic || UCF || Description | ||
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− | | 2015 | + | | 2015 |
− | + | | [[File:FPGA cubesat gumstix 2015.png|200px|FPGA + Gumstix 2015]] | |
+ | | [[Media:FPGA Gumstix 2015 schema.pdf|FPGA + Gumstix 2015 schematic]]<br /><br />[[Media:FPGA Gumstix 2015 top view.pdf|top view]] | ||
+ | | [[Media:FPGA Gumstix 2015.ucf| FPGA + Gumstix 2015 UCF]] | ||
+ | | FPGAs: Spartan 6 XC6SLX45, XC6SLX100 or XC6SLX150<br /><br />SPI flash: M23P64-ME | ||
|} | |} | ||
Revision as of 16:06, 7 October 2015
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This board is the result of a diploma work. It is meant to be a first evaluation version of a Cubesat image processing board.
Type | FPGA Rack | Schematic | UCF | Description |
---|---|---|---|---|
2015 | ![]() |
FPGA + Gumstix 2015 schematic top view |
FPGA + Gumstix 2015 UCF | FPGAs: Spartan 6 XC6SLX45, XC6SLX100 or XC6SLX150 SPI flash: M23P64-ME |
Components
Camera
The camera interface connector comprises:
- a 3.3 V power supply
- a 2-line serial interface (UART or I2C)
- <fval, lval dval>
- a pixel clock (PCLK)
- 12 data bits (D11 ÷ D0)
- 4 control lines (CC1 ÷ CC4)
ADC
The board hosts a ADS8028 12-bit, 1 MSPS, 8-channel analog-to-digital converter.
The voltage reference input connects to the analog power supply via jumper J5. Inputs AIN0 to AIN4 are used to monitor the board's power supplies. Inputs AIN5 to AIN7 are sourced by connector J9.
Power supplies
The board receives a 5 V power input. 4 DC/DC converters provide power for different components.
FPGA supply
On the FPGA:
- VCC33 is used by the FPGA for VCCAUX, the SPI flash, the JTAG connector, bank 0 and bank 3
- VCC18/33 is used for FPGA bank 1
- VCC25/33 is used for FPGA bank 2
- VCC12 is used for the FPGA core
Bank 0 connects to the camera and the ADC
Bank 1 is connected to the Gumstix and 1.8 V should be used. The Gumstix board could be replaced by a memory board which might require 3.3 V signalling
Bank 2 connects to the On-Board Computer (OBC)
Bank 3 connects to the spare connectors on the side of the board.