... | @@ -20,67 +20,10 @@ Projects](https://www.ohwr.org/project/fmc-projects). |
... | @@ -20,67 +20,10 @@ Projects](https://www.ohwr.org/project/fmc-projects). |
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## Main Features - *Under discussion*
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## Main Features - *Under discussion*
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- [Specification gathering discussion](specgather)
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- [Specification gathering discussion](specgather) - a list of wish
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- [Feature Alternatives](FeatureAlternatives)
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items
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- [Feature Alternatives](FeatureAlternatives) - boiling down to a few
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<!-- end list -->
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alternatives
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- Optimised for performance or cost?
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- High-pin count FMC, better oscillators, lower jitter, more PCB
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layers, larger FPGA than those on SPEC?
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- *SPEC was optimised for simplicity and cost*
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- *If go for performance, the expected cost will be twice or three
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times of SPEC*
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- 4-lane PCIe
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- 1x Xilinx handling PCIe interface and user gateware
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- Xilinx Kintex-7: XC7K160T in FBG676 package (XC7K160T-2FBG676C)
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- FMC slot with high pin count (HPC) connector
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- Not full HPC connectivity (not all high-speed serial lines)
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- Vadj adjustable **
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- Dedicated clock signals from Carrier to FMC (available on HPC
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pins) ?
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- Clocking resources
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- 1x 10-280 MHz I2C Programmable XO Oscillator, starts up at 100
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MHz (Silicon Labs Si570, freely usable)
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- 1x 25 MHz TCXO with adjustable frequency (<s>AD5662</s>, used by
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[White Rabbit PTP
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core](https://www.ohwr.org/project/wr-cores/wikis/Wrpc-core))
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- 1x 20 MHz VCXO with adjustable frequency (<s>AD5662</s>, used by
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[White Rabbit PTP
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core](https://www.ohwr.org/project/wr-cores/wikis/Wrpc-core))
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- 1x low-jitter frequency synthesizer (<s>TI CDCM61004</s>, fixed
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configuration, Fout=125 MHz, used by [White Rabbit PTP
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core](https://www.ohwr.org/project/wr-cores/wikis/Wrpc-core))
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- On board memory
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- 1x 2Gbit (256 MByte) DDR3 (?)
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- 1x SPI flash PROM for multiboot FPGA powerup configuration,
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storage of the FPGA firmware or of critical data
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- Miscellaneous
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- on-board thermometer IC (DS18B20U+)
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- unique 64-bit identifier (DS18B20U+)
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- Front panel containing
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- 1x Small Formfactor Pluggable (SFP) cage for fibre-optic
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transceiver
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([WhiteRabbit](https://www.ohwr.org/project/white-rabbit)
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support). 1.25 and 2.5 Gbps.
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- Programmable Red and Green LEDs
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- FMC front panel
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- Internal connectors
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- 1x JTAG header for Xilinx programming during debugging
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- 2x SATA connector
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- 1x mini USB AB (USB-UART bridge)
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- 1x connector for optional cooling fan
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- FPGA configuration. The FPGA can optionally be programmed from:
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- JTAG header
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- SPI Flash PROM
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- Partial reprogramming via PCIe
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- Stand-alone features
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- External 12V power supply connector
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- mini USB connector
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- 4 LEDs
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- 2 buttons
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- Power consumption: 5-12 Watt, depending on application
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- Optional cooling [fan](Fan-Design) for the mezzanine.
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-----
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-----
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... | @@ -122,10 +65,14 @@ Projects](https://www.ohwr.org/project/fmc-projects). |
... | @@ -122,10 +65,14 @@ Projects](https://www.ohwr.org/project/fmc-projects). |
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<td>12-01-2018</td>
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<td>12-01-2018</td>
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<td>Main specifications collected. [Discussion points documented](/specgather).</td>
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<td>Main specifications collected. [Discussion points documented](/specgather).</td>
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</tr>
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</tr>
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<tr class="even">
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<td>29-01-2018</td>
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<td>Specifications taking shape: <a href="specgather">Specification gathering discussion</a> - a list of wish items & <a href="FeatureAlternatives">Feature Alternatives</a> - boiling down to a few alternatives</td>
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</tr>
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</tbody>
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</tbody>
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</table>
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</table>
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-----
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-----
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22 January 2018
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29 January 2018
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