DMA Request Select register

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Thu, 2012-07-26 02:33
John Sinclair
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Joined: 2012-07-26

Hello,

did I understand right:
With the LPC1778 I can't use a DMA with peripheral UART0 (transmit) and UART3 (transmit) at the same time?
Thanks for answer

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Thu, 2012-07-26 06:46
#1
John Sinclair
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Joined: 2012-07-26

incredible but true! A lot of combinations of DMA requests are not possible because always two requests share one bit!
Why? I don't know, in this register are 16 bits reserved!
Very bad design! The DMA loss a lot of his power!

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