Novena DVT Issue Log

Hardware Bringup Notes

• The DDR3 timing has shifted with the new PCB vendor. The hard-coded timings for Micron memories probably needs to be recalibrated.
• R20S/C16S needs tuning, for sure. The default values break Gbit ethernet. Simply removing R20S does restore bandwidth, but the matter warrants further investigation.
• The heartbeat LED D14D is installed 90 degrees rotated. It still lights, it just fires downwards instead of to the side.
• Y10U/Y11U are missing per factory notes. They must be hand-installed for USB to work.
• C11M, C30M, C18M, C52C C45M capacitor is 1210 instead of 1206. Factory has been notified of the mis-ordering of the part.
• R57B 100 ohm -> move to DNP because there is on-chip termination for the FPGA

Quick Tests

• Memory tester: http://memtester.sourcearchive.com/downloads/4.2.2-1/memtester_4.2.2.orig.tar.gz
• wget large file from bunniefoo on all active interfaces: curl -o /dev/null http://bunniefoo.com/bunnie/test.bin
• mass storage on both USB ports

Helpful: stty rows 72 columns 132

Distribution Log

SN001: bunnie

• first time pass

SN002: xobs

• first time pass

SN003: bn.d

• ASIX chip has bad solder joints; now fixed, runs at 8428kiB
• Gbit: 3685kiB
• 2GB single-rank Crucial SO-DIMM
• USB ok

SN004: ra.e

• Gbit: 8600kiB (limited by hub)
• ASIX: 8400kiB
• 4GB dual-rank Crucial SO-DIMM
• USB ok

SN005: te.r

• 4GB dual-rank PNY SO-DIMM
• Gbit: 3700kiB
• ASIX: 8319kiB
• USB ok