Project

General

Profile

Sfp-breakout » History » Version 5

laforge, 03/05/2019 01:56 PM

1 5 laforge
{{>toc}}
2
3 1 laforge
h1. sfp-breakout
4
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.
6
7
You can use it for e.g.
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.
9
* attach some I2C adapter to the I2C pins of the SFP module in order to re-program it
10
11
The SFP transceivers exhibit a symmetric/differencial interface for Rx and Tx.  Each of them is exposed as a pair
12
of SMA connectors, using differential traces between the SMA connectors and the transceiver module.
13
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.
15
16 1 laforge
h2. Schematics / Design files
17
18
The schematics / design files are kept in git at https://git.osmocom.org/osmo-small-hardware/tree/sfp-breakout
19
20 2 laforge
You can see the design discussion in #3313 and notes from board-bringup at #3524
21
22 1 laforge
h2. Photos
23
24 3 laforge
h2. Availability
25 1 laforge
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.
27
28
Assembled boards will be made available via the "sysmocom webshop":https://shop.sysmocom.de/ during March 2019.
29 3 laforge
30
h2. Errata
31
32
h3. sfp-breakout v1
33
34
The v1 boards that don't have the 3v3 connected on the bottom pin header.
35
36
Eagle schematic and board file have been fixed in git, gerber files will only be re-generated once v2 is released.
Add picture from clipboard (Maximum size: 48.8 MB)