Tx register buffered data transmission, Rf12 – Rainbow Electronics RF12 User Manual

Page 24

RF12

TX REGISTER BUFFERED DATA TRANSMISSION

In this operating mode (enabled by bit el, the Configuration Control Command) the TX data is clocked

into one of the two 8-bit data registers. The transmitter starts to send out the data from the first register

(with the given bit rate) when bit et is set with the Power Management Command. The initial value of the

data registers (AAh) can be used to generate preamble. During this mode, the SDO pin can be monitored

to check whether the register is ready (SDO is high) to receive the next byte from the microcontroller.

TX register simplified block diagram (before transmit)

TX register simplified block diagram (during transmit)

Typical TX register usage

Note:

The content of the data registers are initialized by clearing bit et.

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