Rainbow Electronics AT91CAP9S250A User Manual

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587

6264A–CAP–21-May-07

AT91CAP9S500A/AT91CAP9S250A

A start can be programmed in the same manner on either side of the Transmit/Receive Clock
Register (RCMR/TCMR). Thus, the start could be on TF (Transmit) or RF (Receive).

Moreover, the Receiver can start when data is detected in the bit stream with the Compare
Functions.

Detection on TF/RF input/output is done by the field FSOS of the Transmit/Receive Frame Mode
Register (TFMR/RFMR).

Figure 36-10. Transmit Start Mode

Figure 36-11. Receive Pulse/Edge Start Modes

(Input)

(Output)

STTDLY

Start = Falling Edge on TF

Start = Rising Edge on TF

Start = Low Level on TF

Start = High Level on TF

Start = Any Edge on TF

Start = Level Change on TF

(Input)

STTDLY

Start = Falling Edge on RF

Start = Rising Edge on RF

Start = Low Level on RF

Start = High Level on RF

Start = Any Edge on RF

Start = Level Change on RF