Performance SDMA transfer

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Performance SDMA transfer

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larstraeger
Contributor II

Hello community,

i'd like to know which type of " uart 2 external memory" sdma transfer is faster. Should i use a shared Uart connect to SDMA via SPBA or is the access over the Functional Unit Peripheral/Burst Units for "normal" Uarts faster.

thanks and regards

Lars

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JerryFan
NXP Employee
NXP Employee

SPBA bus is preferred, since it is dedicated to SDMA, and thus bus swithch, bus competition(specailly for IP bus which connected with a lot of peripheral), if Functional Unit Peripheral used,  can be avoided.  

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JerryFan
NXP Employee
NXP Employee

SPBA bus is preferred, since it is dedicated to SDMA, and thus bus swithch, bus competition(specailly for IP bus which connected with a lot of peripheral), if Functional Unit Peripheral used,  can be avoided.  

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