DMA in UART .

HI,

I am using 16550 compatible UART. While this UART supports max speed of
about 11.5 Kbps which is connected to a V92 dialup modem supporting
speeds upto 64Kbps .

I want to know the logic behind using DMA inside the UART for
transmission to the FIFOs
Is this really required for such low speeds .


Regards in anticipation of replies,
Sikandar

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