User confirmed TLV62568 (U1) outputs 1.1V, explaining the +1V1 label
found near the VCCAUX ferrite (L2) during the schematic review: it
belongs to U1's own real output net, merely nearby on the page layout,
not routed through the ferrite. VCCAUX remains 2.5V as required by the
real Lattice datasheet.
All three schematic "open items" from the earlier review are now
resolved: TLV62568 EN (R3=499k, confirmed via BOM), the +1V1 label
(false alarm, explained above), and the JTAG pull-up array (confirmed
8 discrete 0402 parts via BOM, not a bussed package -- no polarity
limitation). Only the boot-flash net-name typo (FGPA/FPGA + SCLK/CLK)
remains as a real, open schematic fix, and the FPGA grade discrepancy
(8BG381I vs 8BG381C) remains to be confirmed.
Compiled clean (47 pages, 0 errors).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013xXuuRUWZScuo1DeYJxs3v
micheleandClaude Sonnet 5
a3ba8f93ac