0hmX/am3352-ddr-track-a-local-dfm-wip-20261007

docs/routing-240-snapshot.md

# Routing checkpoint: 240/251 nets

This is a snapshot import of the accepted saved board, not the later unfinished cleanup candidate. Historical source commit: `7726b29681d2ef220b87284d479f2cad632ab845` (not imported as a git object). Archive SHA256: `ea3dd7de7af531f212751aa06af3bda36ccaf9346db071a823db742f9c530a59`.

Saved validation reports 240/251 named nets connected, 11 remaining, no independent export shorts, and 46 DDR routes with 68 signal vias (12 zero-via, 34 two-via). Accepted production native SHA256: `70fb4ae799459e3f372182cd3883c089684986c228d157380827dfbf461c1787`.

Open: 24 copper-only and 24 post-drill DDR reference findings; seven intermediate signal transitions; nine off-pad power joins; D12 RAM supply PDN/current-capacity qualification. Remaining nets: HDMI_D0, HDMI_D11, HDMI_D15, HDMI_D17, HDMI_D2, HDMI_D20, HDMI_D5, HDMI_D8, SYSBOOT10, SYSBOOT2, SYSBOOT6.

Saved receipts were inspected, but routing checks were not rerun during publication. This is not SI/PI, impedance, timing, ampacity, fabrication or boot signoff. Later candidate results are excluded.