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#apertus IRC Channel Logs

2018/07/10

Timezone: UTC


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Bertl
off to bed now ... have a good one everyone!
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Bertl
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se6astian
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Bertl_zZ
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11:24
Bertl
morning folks!
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se6astian|away
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RexOrCine|away
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12:38
felix_
anuejn: should be quite easy to make a board with two sata-3 connectors
12:39
felix_
basically remove the sdi chips, the sync seperator, swap the si5342 for a fixed frequency oscillator and it should be ready to go. not sure though if the sata gateware needs external ddr3 ram
12:39
felix_
if it needs external ram, things will get much more complicated, but if it isn't needed, it's mostly remving components and adding the sata connectors
12:42
felix_
the fpga would have enough transceivers for quad sata, but it might be difficult to squeeze 4 connectors on the board and SFF8087 isn't that commonly used
12:43
felix_
for the dp++ output boad i'd keep the si5342 chip in the design, since a fixed frequency isn't sufficient for the hdmi conpatibility mode
12:45
Bertl
there are dual SATA connectors btw
12:46
felix_
also vertically stacked?
12:46
Bertl
http://img.weiku.com/waterpicture/2011/10/19/3/SATA_Connector_Dual_7P_2_7P_Receptacle_DIP_type_634545929859247914_2.jpg
12:46
Bertl
http://img.weiku.com/waterpicture/2011/10/19/3/SATA_Connector_Dual_7P_2_7P_Receptacle_DIP_type_634545929859247914_3.jpg
12:46
felix_
those seem to be useful
12:47
Bertl
but SFF8087 is easy/simple too (except for the larger size)
12:47
Bertl
there are plenty of good (high quality) SAS (SFF8087) to 4 SATA cables
12:48
felix_
_florent_: does litesata require having external (ddr3) ram on the fpga or does it work well without external ram too?
12:48
Bertl
they are used in all the SAS enclosure solutions without fixed backplanes
13:52
_florent_
felix_: no, you don't need ram on the board to use litesata
13:57
Bertl
can litesata do sata 6G?
13:58
Bertl
and what is required for OOB signalling?
14:00
Bertl
ah, I see, 6G is supported (from the LiteSATA pages
14:02
_florent_
yes, it can do 1.5/3/6G
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se6astian
sounds promising
14:43
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15:08
felix_
yep, sounds good
15:11
felix_
if there will be some completely new camera generation in a few years, it would be good to have gtp/gtx/... lanes on the extension connectors so not every extension module that need fast signals needs its own fpga
15:13
felix_
and for the dp++/sata boards i'd suggest to wait until the sdi board is ready and at least partially tested and then fork those from the sdi board design
15:36
se6astian
of course
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BAndiT1983|away
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se6astian
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16:58
Kjetil
For a new generation it should probably also have 10G SFP+ ports
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BAndiT1983
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Bertl
Kjetil: as soon as Xilinx updates the Artix7 we'll do that :)
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RexOrCine
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17:48
Kjetil
:)
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felix_
a xc7k70t-2fbg484 would be another option
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felix_
the 10cx085 is cheaper though and supports up to 12gbit/s
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