m4ssi has quit [Remote host closed the connection]
emeb_mac has joined ##openfpga
dj_pi has joined ##openfpga
gsi__ has joined ##openfpga
gsi_ has quit [Ping timeout: 245 seconds]
dj_pi has quit [Ping timeout: 244 seconds]
dj_pi has joined ##openfpga
dj_pi has quit [Ping timeout: 245 seconds]
flea86 has joined ##openfpga
Bike has quit [Quit: Lost terminal]
jevinskie has joined ##openfpga
flea86 has quit [Quit: Goodbye and thanks for all the dirty sand ;-)]
jevinskie has quit [Quit: Textual IRC Client: www.textualapp.com]
rohitksingh has joined ##openfpga
_whitelogger has joined ##openfpga
sgcarnaval has joined ##openfpga
emeb_mac has quit [Ping timeout: 272 seconds]
_whitelogger has joined ##openfpga
Asu has joined ##openfpga
Asu` has joined ##openfpga
Asu has quit [Ping timeout: 248 seconds]
gsi__ is now known as gsi_
edmund_ has joined ##openfpga
Asu` has quit [Remote host closed the connection]
Asu has joined ##openfpga
Asu has quit [Remote host closed the connection]
Asu has joined ##openfpga
Asu has quit [Remote host closed the connection]
Asu has joined ##openfpga
Asu has quit [Remote host closed the connection]
Asu has joined ##openfpga
Asu has quit [Read error: Connection reset by peer]
Asu has joined ##openfpga
Bike has joined ##openfpga
edmund_ has quit [Ping timeout: 248 seconds]
Dolu1 has joined ##openfpga
dj_pi has joined ##openfpga
rohitksingh has quit [Ping timeout: 272 seconds]
dj_pi has quit [Quit: Leaving]
dj_pi has joined ##openfpga
cr1901_modern has quit [Read error: Connection reset by peer]
cr1901_modern has joined ##openfpga
emeb has joined ##openfpga
<pointfree> "...Access to this documentation on the infineon website is only granted after accepting a NDA like license. This license forbids publishing any information from these documents, except where one can prove that this information was previously published."
<pointfree> Infineon's aquisition of Cypress does not bode well for PSoC
pie_ has quit [Ping timeout: 258 seconds]
<hl> oh god they acquired cypress? fuck
<hl> better start archiving datasheets
<cr1901_modern> YIKES
Dolu1 has quit [Ping timeout: 244 seconds]
<hl> i really feel that there should be a 'wikileaks for datasheets', but I guess people ideologically pissed off about this stuff and who actually have access to them is not a large domain ;)
<pointfree> libgen/scihub should do datasheets too
<pointfree> I'm going to suck down all of cypress.com with wget tomorrow. Someone with a cypress forum account could be of help (more access to the website). I'll likely put up a tarball, torrent, or download listing on psoctools.org later.
OmniMancer has joined ##openfpga
<hl> i don't think libgen prohibits datasheets as such but it's definitely not its focus/intent
<hl> and then there's paywalled standards, which we don't really have a scihub for
<hl> (although, scihub does work for IEEE standards if you point it at ieeexplore.ieee.org)
cr1901_modern1 has joined ##openfpga
cr1901_modern has quit [Ping timeout: 258 seconds]
rohitksingh has joined ##openfpga
Bike has quit [Quit: Lost terminal]
<mwk> hey, suppose you're making a configurable output buffer for a silicon chip
<mwk> with configurable slew rate
<mwk> how would you implement that in hardware? three different output transistors with some kind of differing physical characteristics?
* mwk looking at configuration bits for a certain FPGA and trying to make heads or tails of them
<sorear> that sounds like a detail that’s probably in a patent
<mwk> ah huh, good idea
<tnt> or not, I was duped by the title
<mwk> that's drive strength, not slew rate
<mwk> drive strength is simple... they just have 6 or 7 output transistors with varying size/strength and enable a subset of them
dj_pi has quit [Ping timeout: 258 seconds]
<mwk> slew rate appears to be controlled by an entirely independent set of bits, though
<mwk> or rather, two sets, one for P and one for N
<tnt> Oh ... maybe add capacitance on the gate ?
pie_ has joined ##openfpga
<mwk> hmm... would have to be a lot of capacitance to affect it substantially, no?
<mwk> and, won't the effect be flattened be the transistor being basically a two-state device?
<mwk> sorry, /me kinda knows shit about electronics
<tnt> Well, it's not a two state device, it has a linear region during the transition.
emily has quit [Ping timeout: 250 seconds]
<tnt> Here https://patents.google.com/patent/US5877647A/ they seem to basically drive the multiple output transistor in 'time delayed' sequence to control slew.
<mwk> heh, not capacitance, serial resistance actually
<mwk> I think that's what I was looking for
<tnt> Ah well, same idea, delaying the rise of the output transistor gate voltage :) I guess adding a series resistor is easier. But same principle, you have a RC created by the pre-driver output impedance and output driver gate capacitance.
<mwk> hm... so if I disable all slew rate bits, I end up with no voltage on that thing and output doesn't work at all
<mwk> that's an easy enough theory to test
Dolu1 has joined ##openfpga
cr1901_modern1 has quit [Quit: Leaving.]
cr1901_modern has joined ##openfpga
edmund_ has joined ##openfpga
indy has quit [Ping timeout: 272 seconds]
edmund_ has quit [Ping timeout: 244 seconds]
pie_ has quit [Remote host closed the connection]
pie_ has joined ##openfpga
rohitksingh has quit [Ping timeout: 250 seconds]
rohitksingh has joined ##openfpga
OmniMancer has quit [Quit: Leaving.]
Miyu has joined ##openfpga
Xark has joined ##openfpga
hackkitten has quit [Ping timeout: 258 seconds]
Asu has quit [Quit: Konversation terminated!]
Asu has joined ##openfpga
emily has joined ##openfpga
AndrevS has joined ##openfpga
Dolu1 has quit [Ping timeout: 272 seconds]
indy has joined ##openfpga
Dolu1 has joined ##openfpga
balrog has joined ##openfpga
mnr has joined ##openfpga
rohitksingh has quit [Ping timeout: 250 seconds]
Asu` has joined ##openfpga
Asu has quit [Ping timeout: 246 seconds]
AndrevS has quit [Remote host closed the connection]
AndrevS has joined ##openfpga
Dolu1 has quit [Quit: Leaving]
ewen has joined ##openfpga
cr1901_modern has quit [Ping timeout: 246 seconds]
Asu` has quit [Ping timeout: 245 seconds]
Asu` has joined ##openfpga
AndrevS has quit [Remote host closed the connection]
bluezinc_ has joined ##openfpga
<sorear> azonenberg_work: implementing register files for dual-issue RISC on FPGAs has just come up in #yosys
Asu` has quit [Quit: Konversation terminated!]
azonenberg_mobil has joined ##openfpga
azonenberg_mobil has quit [Read error: Connection reset by peer]
azonenberg_mobil has joined ##openfpga
azonenberg_mobil has quit [Ping timeout: 272 seconds]
balrog has quit [Ping timeout: 248 seconds]
azonenberg_mobil has joined ##openfpga
balrog has joined ##openfpga
azonenberg_mobil has quit [Read error: Connection reset by peer]
cr1901_modern has joined ##openfpga