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Timer event to request DMA on SPI peripheral

Question asked by Chin.Kenrick on Dec 20, 2011
I am using TIM2_CH3 configured for a DMA1 request on Stream1_Channel3. On Output Compare I would like TIM2_CH3 to trigger SPI1 to begin a DMA2 request on Stream5_Channel3.

How do I associate the TIM2_CH3 event with SPI1 DMA2 using Stream5_Channel3 (for example)?

I don't understand the usage of TIM-DMABase in TIM_DCR register. Is this only to perform a DMA between a TIM register and memory?