have any of you seen an Ethernet PHY in a 100 pin dual row QFN package? I'm coming up blank for now
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 12:08:57 JST ✧✦Catherine✦✧
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 12:16:26 JST ✧✦Catherine✦✧
looks like this
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 12:32:30 JST ✧✦Catherine✦✧
actually that seems to be a 96 lead package?
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 12:43:48 JST ✧✦Catherine✦✧
maybe its a 100 pin package with leads in corners that are supposed to not have footprint pads?..
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 12:55:40 JST ✧✦Catherine✦✧
almost but no dice
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 13:29:53 JST ✧✦Catherine✦✧
@jpm brilliant, that's exactly it!
I owe you a drink of your choice, I think
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Joel Michael (jpm@aus.social)'s status on Friday, 23-May-2025 13:29:54 JST Joel Michael
@whitequark Possibly 88E1111?
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 13:30:49 JST ✧✦Catherine✦✧
it's almost certainly Marvell 88E1111!!
thanks to Joel Michael @jpm who identified it, it's a perfect match footprint wise, let me probe it
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 13:57:10 JST ✧✦Catherine✦✧
perfect match by pinout!
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 14:46:51 JST ✧✦Catherine✦✧
not quiiiiite this jack
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 14:50:14 JST ✧✦Catherine✦✧
@jpm yeah I don't know how I missed it... I certainly tried all of these terms in four different search engines
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Joel Michael (jpm@aus.social)'s status on Friday, 23-May-2025 14:50:15 JST Joel Michael
@whitequark The biggest hint was it is 96 DQFN, combined with “ethernet” and the first search hit was it. Appears that pin 1 is marked by a dot on the board, and the data lines on the chip appear to be pointed towards the DNP 8P8C socket on the left edge of the board, so that was enough for me to suggest it.
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 14:50:35 JST ✧✦Catherine✦✧
what's this coax connector called?
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 14:50:51 JST ✧✦Catherine✦✧
@jpm haha, works ^^
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Joel Michael (jpm@aus.social)'s status on Friday, 23-May-2025 14:50:52 JST Joel Michael
@whitequark Of you ever make it to .au, or if I make it to .uk again, you’re on (but I owe you at least that for making Amaranth and Glasgow)
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 14:54:33 JST ✧✦Catherine✦✧
not this jack either
i have 25 more pages of them to go T___T
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Dr. ir. Brian R. Pauw (doc@mastodon.social)'s status on Friday, 23-May-2025 15:01:49 JST Dr. ir. Brian R. Pauw
@whitequark these? https://en.wikipedia.org/wiki/Hirose_U.FL?wprov=sfti1
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AlexB (vmp_@mastodon.social)'s status on Friday, 23-May-2025 15:02:03 JST AlexB
@whitequark MMCX? /guess
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 15:02:40 JST ✧✦Catherine✦✧
@doc nope, the ones on the board protrude 5.3mm up
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 15:03:08 JST ✧✦Catherine✦✧
@vmp_ MMCX has a beveled edge, this one is just a tube
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 15:56:09 JST ✧✦Catherine✦✧
@jpm yeah
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Joel Michael (jpm@aus.social)'s status on Friday, 23-May-2025 15:56:10 JST Joel Michael
@whitequark It’s 14-pin so that would narrow the search space a bit? That would probably be a pair of dual-colour LEDs
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 17:59:48 JST ✧✦Catherine✦✧
@jpm ... it would really help if LCSC had "pin count" as a search criterion
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 18:23:49 JST ✧✦Catherine✦✧
@jpm tbf mouser does that too
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Joel Michael (jpm@aus.social)'s status on Friday, 23-May-2025 18:23:50 JST Joel Michael
@whitequark Oof yeah the LCSC parametric search, where your options are sometimes “-“, “no”, “plugin”, and “yellow/尿”
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 18:24:02 JST ✧✦Catherine✦✧
oh FINALLY i got it
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 18:40:30 JST ✧✦Catherine✦✧
very nice of the board manufacurers to depop the crystal and phy, but leave all the other passives required to run them
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 19:00:50 JST ✧✦Catherine✦✧
@hennichodernich how the hell did you figure it out?
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Henning Paul DC4HP (hennichodernich@radiosocial.de)'s status on Friday, 23-May-2025 19:00:52 JST Henning Paul DC4HP
@whitequark Still reversing the Shahed? 😉
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 19:27:16 JST ✧✦Catherine✦✧
@hennichodernich right. well, yeah. I think I can turn the CRPA subsystem into a pretty good 4T4R phase coherent SDR, which is simply not something that is currently available on the market; best you got is ADALM PLUTO (which has a very similar architecture but is 2T2R)
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Henning Paul DC4HP (hennichodernich@radiosocial.de)'s status on Friday, 23-May-2025 19:27:17 JST Henning Paul DC4HP
@whitequark I can tell from the pixels and the fact that I've seen quite lot of Shaheds in my life[1].
[1] On Twitter. From Ukrainian accounts.
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 19:39:33 JST ✧✦Catherine✦✧
@hennichodernich this thing has two AD9361s, so you get 4 inputs, no?
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Henning Paul DC4HP (hennichodernich@radiosocial.de)'s status on Friday, 23-May-2025 19:39:34 JST Henning Paul DC4HP
@whitequark But doesn't the AD9361S still only have 2 Rx and 2 Tx chains? It does have twice as many outputs and thrice as many inputs, but those can't be used simultaneously, right?
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 19:48:33 JST ✧✦Catherine✦✧
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F4GRX Sébastien (f4grx@chaos.social)'s status on Friday, 23-May-2025 19:48:35 JST F4GRX Sébastien
@whitequark @vmp_ cheap chinese mmcx?
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 19:49:15 JST ✧✦Catherine✦✧
the coax connector appears to match MMCX when measured; very similar to MMCX-J-P-H-ST-TH1
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 19:58:08 JST ✧✦Catherine✦✧
@hennichodernich I haven't gotten down to that detail on the RF chain but given that the original purpose of the device is phase coherent reception from 4 antennas, they must have
let me check the ASIC that I think is the clock source
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Henning Paul DC4HP (hennichodernich@radiosocial.de)'s status on Friday, 23-May-2025 19:58:09 JST Henning Paul DC4HP
@whitequark Ah, ok, thanks for the clarification. Do they have somehow coupled the LOs in order to get them coherent? Because usually that's the tricky part. AD's "standalone" modulators and demodulators have dedicated LO inputs and outputs so you can daisy-chain them. I always wanted to build a MIMO SDR with them, too.
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Friday, 23-May-2025 19:58:21 JST ✧✦Catherine✦✧
@hennichodernich do you have Signal or Matrix?
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Saturday, 24-May-2025 00:56:30 JST ✧✦Catherine✦✧
@karotte @hennichodernich it's really weird, isn't it? iirc you can do up to about 60 Msps
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Lukas (karotte@chaos.social)'s status on Saturday, 24-May-2025 00:56:32 JST Lukas
@hennichodernich @whitequark I'm a bit stumped that I can't find the DAC/ADC sample rate prominently listed in the datasheet.
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Saturday, 24-May-2025 00:59:12 JST ✧✦Catherine✦✧
@hennichodernich @karotte this device doesn't use the S, it's the AD9361BBCZ, normal commercial version
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Henning Paul DC4HP (hennichodernich@radiosocial.de)'s status on Saturday, 24-May-2025 00:59:14 JST Henning Paul DC4HP
@karotte @whitequark The AD9361S seems to be heavily NDA'ed. The AD9361 datasheet is publicly available.
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Henning Paul DC4HP (hennichodernich@radiosocial.de)'s status on Saturday, 24-May-2025 01:04:16 JST Henning Paul DC4HP
@whitequark @karotte Oh, okay, so I was on the wrong track.
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✧✦Catherine✦✧ (whitequark@mastodon.social)'s status on Saturday, 24-May-2025 01:13:33 JST ✧✦Catherine✦✧
@hennichodernich @karotte yeah the entire thing is built with commercial grade components (I haven't found even a single industrial grade one, at least in this subassembly)
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