Kontron SMARC Evaluation Carrier - Manual (Page 48)

User’s Guide
48 www.kontron.com
12 MMC Mezzanine
The eMMC Mezzanine is a 29.5mm x 32mm board that allows eMMC devices of various capacities and from various
vendors to be prototyped with the SMARC Evaluation Carrier board.
Vendor Vendor P/N Connector type Kontron PN
Hirose FX12B-40P-0.4SV SMARC carrier connector 1051-1278
Hirose FX12B-40S-0.4SV eMMC Mezzanine Module connector 1051-1279
The separation between the SMARC Evaluation Carrier top side and the eMMC Mezzanine PCB bottom side is 1.5mm.
Standoffs with threads for M2.5 hardware are present on the Evaluation Carrier. There are no parts on the Evaluation
Carrier in the shadow of the eMMC Mezzanine, except for the mating Hirose connector and the standoffs. Hence parts
up to 1.3mm tall may be placed on the bottom side of the eMMC Mezzanine PCB.
The Kontron eMMC Mezzanine cards fabricated to date have all the eMMC Mezzanine card parts on the bottom of the
eMMC Mezzanine card, facing the Evaluation Carrier PCB top side. There are no parts on the top side of this card. This
was done to allow a 4 layer PCB and to have a lower fabrication cost by having all parts on one side of the PCB. This is
evident in the following figure. The left photo shows the bottom of the eMMC Mezzanine card, that mates with the
Evaluation Carrier. The right photo shows the top of the card.
Figure 12. eMMC Mezzanine Card