Yokemate of Keyboards
Posts: 11207 from 2003/5/22
>> According to the block diagram, there's SATA2 connected (for whatever reason)
>> and the 4 PCIe controllers are configured with 9 lanes as x4-gen3 (MXM/GPU)
>> x2-gen2 (4×SATA3) x2-gen2 (MiniPCIe/LTE/WiFi) x1-gen2 (4×USB3).
>> I just had a closer look at the SerDes lane assignment options of the
>> T2080: [...] To me it seems the T2080 offers three better PCIe options,
>> so that only the fourth-best option would be the one chosen by ACube:
>> 14 PCIe lanes (x4 x4 x4 x2) without SATA2 (using 0xBC + 0x1F config)
>> 12 PCIe lanes (x4 x4 x2 x2) with SATA2 (using 0xBC + 0x15/0x16 config)
>> 11 PCIe lanes (x4 x4 x2 x1) without SATA2 (using 0xC8/0xD6 + 0x1F config)
>> 09 PCIe lanes (x4 x2 x2 x1) with SATA2 (using 0xC8/0xD6 + 0x15/0x16 config)
> Thanks, good analysis. I'll relay it.
According to the most recent block diagram
, it seems ACube switched to the "11 PCIe lanes (x4 x4 x2 x1) without SATA2" option, configured as x4-gen3 (MXM/GPU) x4-gen2 (LTE/WiFi) x2-gen2 (4×SATA3) x1-gen2 (2×USB3).