Brought a PCIe x1 to SATA & mSATA controller card for Jetson TX2, but it was not working reliably. Amazon: qobobo® SuperSpeed PCI-E to mSATA3.0 1-Port and SATA 3.0 1-Port Express Card
The card would randomly stop working during intensive disk operations, or after being online for about one day: [code]ata3.00: exception Emask 0x10 SAct 0xffc00 SErr 0x400000 action 0x6 frozen ata3.00: irq_stat 0x08000000, interface fatal error ata3: SError: { Handshk } ata3.00: failed command: WRITE FPDMA QUEUED ata3.00: cmd 61/38:50:c8:3c:96/13:00:05:00:00/40 tag 10 ncq 2519040 out res 40/00:98:38:ef:7a/00:00:00:00:00/40 Emask 0x10 (ATA bus error) ata3.00: status: { DRDY } ata3.00: failed command: WRITE FPDMA QUEUED ata3.00: cmd 61/00:58:00:50:96/18:00:05:00:00/40 tag 11 ncq 3145728 out res 40/00:98:38:ef:7a/00:00:00:00:00/40 Emask 0x10 (ATA bus error)[/code]
From the confidential(!) datasheets, the core voltage of the ASM1061 controller should be 1.25V (Min. 1.20V; Max. 1.30V). However, the resistor values on the PCB (R4 = 40.2kΩ, R15 = 30kΩ) suggests it was configurated as 1.05V for some unknown reason: 0.6 / 40.2k * (30k + 40.2k) = 1.05V Resistor 59C
After change both of the resistors to 20kΩ (core voltage 1.20V), the card works a lot more reliably, no more crashes happened yet.
Datasheets: ASM1061_DataSheet_R1_8 ASM1061 reference schematic APE1501 bulk regulator