Datasheet

VS1053b Datasheet
7 SPI BUSES
MSb or LSb first, depending of contents of SCI_MODE (Chapter 8.7.1).
The firmware is able to accept the maximum bitrate the SDI supports.
7.4.2 SDI in VS1002 Native Modes (New Mode)
In VS1002 native modes (SM_NEWMODE is 1), byte synchronization is achieved by XDCS.
The state of XDCS may not change while a data byte transfer is in progress. To always main-
tain data synchronization even if there may be glitches in the boards using VS1053b, it is
recommended to turn XDCS every now and then, for instance once after every disk data block,
just to make sure the host and VS1053b are in sync.
If SM_SDISHARE is 1, the XDCS signal is internally generated by inverting the XCS input.
For new designs, using VS1002 native modes are recommended.
Version: 1.13, 2011-05-27 17