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1745D–ATARM–04-Nov-05
AT91M55800A
27.6 SPI in Slave Mode does not Work
In transmission, the data to be transmitted (written in SP_TDR) is transferred in the shift
register and, consequently, the TDRE bit in SP_SR is set to 1. Though the transfer has not
begun, when the following data are written in SP_TDR, they are also transferred into the
shift register, crushing the precedent data and setting the bit TDRE to 1.
Problem Fix/Workaround
No problem fix/workaround to propose.
27.7 V
DDBU
Consumption is not Guaranteed
The battery supply voltage consumption is not guaranteed in the case of internal peripheral
accesses.
Problem Fix/Workaround
The user should minimally access the Advanced Peripheral Bus by using an interrupt-driven
driver rather than polling methods.