Current Server Time: 21:35 (Central Europe)

#apertus IRC Channel Logs

2019/05/23

Timezone: UTC


00:42
futarisIRCcloud
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illwieckz_
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BAndiT1983|away
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futarisIRCcloud
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se6astian|away
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Nira|away
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Nira|awa`
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Nira|away
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BAndiT1983
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xfxf_
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Bertl_zZ
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07:47
Bertl
morning folks!
07:53
se6astian
good day
08:09
Nira
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se6astian
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se6astian|away
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BAndiT1983|away
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se6astian
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10:32
Bertl
off for now ... bbl
10:32
Bertl
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12:27
Y_G
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12:31
Y_G
Hi BAndiT1983
12:31
Y_G
Could you check the trello board whenever you have time
12:33
Y_G
Tried some test functionality with sysfsAdapter
12:43
BAndiT1983
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Nira|away
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Nira
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Nira
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13:27
Bertl_oO
Hey Nira! How is it going?
13:37
Nira
Good! Finally having some more time today :)
13:42
illwieckz
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13:42
Bertl_oO
glad to hear!
13:56
illwieckz
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se6astian
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BAndiT1983|away
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se6astian
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se6astian|away
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16:59
Davelister
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johnatha_
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20:21
Davelister
okay, it looks like I have understood the main things about the electronics :-)
20:21
Davelister
I now should be able to help on the interface board
20:25
se6astian
excellent!
20:26
Bertl_oO
Davelister: great! there are a few not so obvious details we should talk about
20:26
Davelister
and my bad, I had a look to the AC/DC switching specs for a Z7020 speed grade 1, it may be able to do it :-)
20:26
Davelister
(I got the wrong line, sorry)
20:26
Davelister
Bertl_oO: sure
20:27
Bertl_oO
if you look at the schematics of the main board and the sensor frontend
20:28
Bertl_oO
you can see that there are 'C' shaped brackets around the LVDS pairs of the connectors towards the interface board
20:28
Bertl_oO
(e.g. page 3 of the main board schematics)
20:28
Davelister
yes
20:29
Bertl_oO
in the middle, those 'C's become 'CC's
20:29
Bertl_oO
this means that the pairs connected there are clock capable
20:29
Davelister
for clocking compatible I suppose?
20:29
Davelister
great
20:30
Bertl_oO
correct, so those need to be addressed by the interface board, but it hasn't been decided how the smart interface board is structured in this regard
20:30
Bertl_oO
i.e. we can decide whether we want clock capable pairs to match up there or overlap
20:31
Bertl_oO
as they are only relevant for 'inputs' we have some flexibility
20:31
Davelister
ok
20:32
Bertl_oO
IO banks are something which also needs carefull consideration
20:33
Davelister
that what I was looking for
20:33
Bertl_oO
and we have a bunch of bus pins SPI/I2C/etc which are connected to the routing fabrics with their own voltage rails
20:34
Davelister
I suppose the "common" electrical signals between the interface and the main board/Zynq shall be dispatched over Bank 34 and 35?
20:35
Bertl_oO
the LVDS pairs are 'LVDS' so bank voltage is somewhat flexible there, but for other parts and interfaces it might matter to choose the 'right' bank voltage
20:35
Bertl_oO
in total we have 8 (eight) power rails for interface and sensor frontend
20:36
Bertl_oO
two of them are dedicated for the interface board
20:36
Bertl_oO
the other six are reserved for the sensor frontend and need to be passed through
20:37
Bertl_oO
they are designed for up to 3A each, but realistically the total power budget should be below 30W
20:37
Nira
changed nick to: Nira|away
20:38
Davelister
ok
20:39
Bertl_oO
there also is remote sensing for those power rails (which isn't used yet, but will be used in the power board v2.0)
20:41
Davelister
remote sensing such as "power monitoring"?
20:41
Davelister
or remote control?
20:41
Bertl_oO
note that the interface board interfaces are designed to be rotation symmetric
20:41
Bertl_oO
to mainly check and if necessary adjust the power rail
20:42
Bertl_oO
i.e. the rail is connected via headers (going through the main board)
20:43
Bertl_oO
and there is a kind of kelvin connection to the rail which feeds back to the power board
20:43
Bertl_oO
it is not part of the active regulation (yet) but it could be used to make minor adjustments
20:43
Davelister
I see
20:44
Bertl_oO
the sensor frontend is designed to provide over and under voltage signals to the power board
20:44
Bertl_oO
this is mainly to allow for flexible adjustments of the rails and verification via the sensor frontend
20:49
Davelister
that's noted Bertl_oO
20:49
Davelister
thank you for the introduction
20:50
Davelister
I am sorry, but tomorrow will be another harsh day
20:50
Davelister
have a good night everyone
20:50
Bertl_oO
no problem, if there are any questions (and I'm pretty sure there will be), just let me know
20:50
Bertl_oO
have a good night!
20:50
Davelister
thank you, you too!
20:50
Davelister
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21:02
se6astian
heading off too
21:02
se6astian
good night
21:03
se6astian
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BAndiT1983
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illwieckz
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johnathan
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