Sfp-breakout » History » Version 5
laforge, 03/05/2019 01:56 PM
1 | 5 | laforge | {{>toc}} |
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3 | 1 | laforge | h1. sfp-breakout |
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5 | 4 | laforge | The Osmocom SFP breakout board is exactly what the name implies: A small break-out board for transceivers in "SFP":https://en.wikipedia.org/wiki/Small_form-factor_pluggable_transceiver form factor. |
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7 | You can use it for e.g. |
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8 | * transmitting your own signals / waveforms (not restricted to Ethernet or CPRI) over fiber optics. This is e.g. useful if you need galvanic isolation between digital circuits, or need long-distance transmission e.g. between FPGA LVDS interfaces. |
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9 | * attach some I2C adapter to the I2C pins of the SFP module in order to re-program it |
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11 | The SFP transceivers exhibit a symmetric/differencial interface for Rx and Tx. Each of them is exposed as a pair |
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12 | of SMA connectors, using differential traces between the SMA connectors and the transceiver module. |
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14 | If you're interested in transmitting single-ended signals, please see the [[sfp-experimenter]] board instead. It's like the SFP breakout board, but contains differential transmitter + receivers. |
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16 | 1 | laforge | h2. Schematics / Design files |
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18 | The schematics / design files are kept in git at https://git.osmocom.org/osmo-small-hardware/tree/sfp-breakout |
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20 | 2 | laforge | You can see the design discussion in #3313 and notes from board-bringup at #3524 |
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22 | 1 | laforge | h2. Photos |
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24 | 3 | laforge | h2. Availability |
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26 | 5 | laforge | As this is an Open Source Hardware design, you can simply go ahead and build the boards yourself using the design files we released. |
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28 | Assembled boards will be made available via the "sysmocom webshop":https://shop.sysmocom.de/ during March 2019. |
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30 | h2. Errata |
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32 | h3. sfp-breakout v1 |
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34 | The v1 boards that don't have the 3v3 connected on the bottom pin header. |
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36 | Eagle schematic and board file have been fixed in git, gerber files will only be re-generated once v2 is released. |