Retina Chip Wiki mediawiki3 https://wiki3.rohmega.com/wiki/Main_Page MediaWiki 1.43.9 first-letter Media Special Talk User User talk Retina Chip Wiki Retina Chip Wiki talk File File talk MediaWiki MediaWiki talk Template Template talk Help Help talk Category Category talk 0 1 27 2 2026-09-04T09:13:30Z Ronald 1 add clickable block diagram 27 wikitext text/x-wiki __NOTOC__ '''Retina Chip Documentation System''' — the live, present-state knowledge base for the high-channel-count implantable neural-interface ASIC. The diagram below is the retina chip signal chain. '''Click any block''' to open its wiki page. <imagemap> File:Retina-chip-signal-chain.svg|980px|center|Click any block to open its wiki page desc none rect 40 270 160 340 [[Blocks|Electrode (goes to AFE)]] rect 230 270 360 340 [[Block:AFE Gm-C|AFE Gm-C integrator]] rect 420 270 550 340 [[Block:SC LPF|Switched-cap LPF]] rect 610 270 730 340 [[Block:SAR ADC|SAR ADC]] rect 790 270 930 340 [[RC2.0|Wireless / UWB (RC2.0)]] rect 420 420 550 490 [[Block:EDO Attenuator|EDO attenuator]] rect 610 420 730 490 [[Block:Stimulator|Current-steering stimulator]] rect 250 90 400 160 [[Block:Bias Bandgap|Bias / bandgap]] </imagemap> == About this wiki == This wiki follows two hard rules: * '''Two genres, never merged''' — the [[Timeline]] is an immutable, append-only chronological record of ''what was believed on a date''. Wiki pages are statements of ''what is true now''. They are never merged. * '''Durable vs instance''' — every block splits into a '''durable''' page (what the block is, design equations, budgeting procedure — true independent of any chip) and '''instance''' pages (component values, sizing, post-PEX numbers, errata for a specific silicon). A chip page is a thin manifest linking to its instances. == The chips in scope == {| class="wikitable" |- ! Chip !! Node !! Role |- | [[RC1.9]] || TSMC 28nm HPC+ || 1024-channel wired AFE redesign; taped out |- | [[RC2.0]] || TSMC 28nm HPC+ || wireless variant (UWB); currently active |- | [[PMU1]] || 180nm || power-management test chip — does '''not''' inherit 28nm defaults |- | RC3.0 / RC3.1 || 28nm || future, scaled toward 10k+ channels |} == Start here == * [[Blocks]] — the signal-chain building blocks (durable theory + per-chip instances) * [[Decisions]] (ADRs) — the load-bearing record of what was chosen and why * [[Methods]] — cross-cutting, chip-independent procedures * [[Timeline]] — the immutable weekly slides & meeting minutes archive kodjzmi5yq30zmc9isfngb4pa2ayyq9