CODEWITHSUNDEEP
clinux-device-driverembedded-linuxuart
ddpd
ddpd

Reputation: 603

How is full duplex transmission possible in OMAP4460 UART?

The base address for THR and RHR registers are same. So is it possible to transmit and receive at the same time?

Upvotes: 1

Views: 97

Answers (1)

Clifford
Clifford

Reputation: 93546

It is specific to your particular UART hardware implementation, but it is unlikely that they are in fact the same register. They are two registers that have the same address - one is read-only (RHR), the other write-only (THR), so they do not need separate addresses.

In the hardware logic the correct register will be selected depending on the state of the read/write logic state as if that were an additional address line.

So yes, full duplex operation will be supported. You should read the user manual and/or data sheet for your particular part.

Upvotes: 5

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