We are planning on using the SPI_slave on the one of the McBSP channel(TMS320F28335). word length 16 bit and as per the McBSP user’s guide states that the maximum word length for the SPI on the McBSP is a frame-length of 1 serial word only. i.e. XFRLEN1 & RFRLEN1 must be 0 [I looked at Table 6-1 of the MCBSP user guide(SPRUFB7b)].
First i have tested single world per frame it is working fine and i tried to implement the continuous data (16 world per frame) receiving and transmitting in MCBSP_SPI_SLAVE mode, as per the Mcbsp user guide it is not possible because McBSP_SPI frame-length of 1 serial word only but i am surprised after testing i am able to receive continuous data 16 world/frame. still i am not convinced the result because as per the user guide is not possible but i am able to do that , now i am confused MCBSP_SPI_Slave mode able to receive 1 world/Frame or multiple world/Frame. Please can you clarify above the statement.
Regards,
M.Kannan