SD card/SDIO 3.0 level translation solution

[asmi]

1. You an preload stuff on eMMC prior to soldering it, there are affordable devices which can do that.
2. You can have both SD and eMMC! You will need to route eMMC through EMIO to PL pins.
3. NVT4858HK is in QFN16 package with 0.4 mm pitch, which is very doable without any special processing.

[KreAture]

Next ZYnq design, I might use an eMMC in 4 bit mode

It is (in Zynq) compatible with the SDIO controller meant for SD cards. IE eMMC/ microSD card- doesnt care,

although :
eMMC solution :
- the eMMC though is huge 14 x 18mm.  but wont need 1.8V logic translator (runs on 1.8V)   252mm2
(- needs USB or BT interface to load SW and talk to the outside work. at least 4x4 QFN for FTDI USB)
- and USB Type C socket (9.6 x 7.6) 73mm2  +FTDI 4x4 chip =16mm2  total 89mm2,  Or Bluetooth solution 8x 12 = 96mm2
- FSBL bootflash 6x 5 = 30mm2

microSD card  solution :
board area : 14.5 x 15.6  (226mm2)
3.3V <> 1.8V translator  (4 x 4 QFN) (16mm2)
no FSBL bootflash

microSD still wins on simplicity.
can quite follow it but did we find a translator with 0.5mm pitch or above ? none of this 0.35mm pitch QFN, please.
-TXS02612 looks workable.

I am receiving NVT4858HKZ in XQFN today as I too want to avoid the 0.35 BGA's. It's 1.8x2.6mm aka 4.48mm2 but require a bit more for footprint.
(2.3x3.15 = 7.245mm2 occupied area.) I am mostly looking to verify actual power draws signaling at 1.8v->3.3v vs using native 1.8v on card via LVS detection init.