Datasheet

271
AT32UC3A
Figure 25-13. Transmit and Receive Frame Format in Edge/Pulse Start Modes
Note: 1. Example of input on falling edge of TX_FRAME_SYNC/RX_FRAME_SYNC.
Table 25-3. Data Frame Registers
Transmitter Receiver Field Length Comment
TFMR RFMR DATLEN Up to 32 Size of word
TFMR RFMR DATNB Up to 16 Number of words transmitted in frame
TFMR RFMR MSBF Most significant bit first
TFMR RFMR FSLEN Up to 16 Size of Synchro data register
TFMR DATDEF 0 or 1 Data default value ended
TFMR FSDEN Enable send TSHR
TCMR RCMR PERIOD Up to 512 Frame size
TCMR RCMR STTDLY Up to 255 Size of transmit start delay
DATNB
DATLEN
Data
DataData
Data
Data Data Default
Default
Sync Data
Sync Data
Ignored
From DATDEF
Start
From DATDEF
DATLEN
To RHRTo RHR
From THR
From THR
From THR
From THR
From DATDEF
From DATDEF
Ignored
Default
Default
Sync Data
To RSHR
From TSHR
FSLEN
Start
TX_FRAME_SYNC
/
RX_FRAME_SYNC
TX_DATA
(If FSDEN = 1)
TX_DATA
(If FSDEN = 0)
RX_DATA
STTDLY
Sync Data
PERIOD
(1)
32058K
AVR32-01/12