STM32F303 SPI3 DMA2 negeneruje TC flag

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Zdravim konferenci
Uz sa peknych par hodin trapim z nasledovnym problemom.
Potrebujem po odvysielani (a prijati) dat cez SPI nahodit CS. Chcel som 
pouzit TC flag DMA na RX SPI.
Ak mam zapnute inkrementovanie pamate vsetko funguje dobre. Ak vsak 
chcem vysielat a na prijimanych datach nezalezi je inkrementovanie RAM 
vypnute. A v tomto pripade STM negeneruje TC flag. Pokusal som sa o 
workarround s tym ze pockam na TC flag od zapisu do SPI a potom na RNXE 
od SPI periferie, zial bez uspechu.
Na STM32F103 som na tento problem nenarazil aj ked DMA periferia je 
velmi podobna tej z F303.
Stretol sa s tym niekto?
Nastavenie DMA:

    DMA_InitStructure.DMA_PeripheralBaseAddr     = 
(uint32_t)(&(SPIMMC->DR));
    DMA_InitStructure.DMA_PeripheralInc         = DMA_PeripheralInc_Disable;
    DMA_InitStructure.DMA_PeripheralDataSize     = 
DMA_PeripheralDataSize_Byte;
    DMA_InitStructure.DMA_MemoryDataSize         = DMA_MemoryDataSize_Byte;
    DMA_InitStructure.DMA_Mode                     = DMA_Mode_Normal;
    DMA_InitStructure.DMA_Priority                 = DMA_Priority_High;
    DMA_InitStructure.DMA_M2M                    = DMA_M2M_Disable;
    /* DMA_SPI_RX */
    DMA_InitStructure.DMA_MemoryBaseAddr     = (uint32_t)(&rw_dummybyte);
    DMA_InitStructure.DMA_DIR                 = DMA_DIR_PeripheralSRC;
    DMA_InitStructure.DMA_MemoryInc             = DMA_MemoryInc_Disable;
    DMA_Init(SPIMMC_DMA_CHANNEL_RX, &DMA_InitStructure);

    /* SPI_DMA_TX */
    DMA_InitStructure.DMA_MemoryBaseAddr     = (uint32_t)buff;
    DMA_InitStructure.DMA_DIR                  = DMA_DIR_PeripheralDST;
    DMA_InitStructure.DMA_MemoryInc             = DMA_MemoryInc_Enable;
    DMA_Init(SPIMMC_DMA_CHANNEL_TX, &DMA_InitStructure);
    DMA_Cmd(SPIMMC_DMA_CHANNEL_RX, ENABLE);
    DMA_Cmd(SPIMMC_DMA_CHANNEL_TX, ENABLE);
/*--------------------------------------------------------------------*/
/* DMA TC flag nenastavi a program zamrzne v nasledovnom riadku */
while (DMA_GetFlagStatus(SPIMMC_DMA_FLAG_RX_TC) == RESET) { ; }

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