CXDB5CCBM-MA-A is part of the CXMT CXDB family.
Its series is described as follows: LPDDR4X reduces the I/O voltage further than LPDDR4, lowering power in mobile and embedded designs without changing the interface.
The part appears in smartphones and tablets.
What sets it apart is the density on that bus, which lets one device cover the storage the design needs.
Within the family, this ordering code is the one specified for 4 GB (32 Gbit) density.
For this ordering code the speed is 4266 Mbps per pin.