SAM3X8E Atmel Corporation, SAM3X8E Datasheet - Page 601

• Manufacturer Part Number: SAM3X8E
• Manufacturer: Atmel Corporation

Figure 30-8. Transmitter Block Diagram
30.7.3
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
SSC_TCMR.STTDLY != 0
Receiver Operations
SSC_RCMR.START
SSC_TFMR.DATLEN
SSC_TFMR.FSDEN
RXEN
TX Start
RF
RC0R
Selector
Start
A received frame is triggered by a start event and can be followed by synchronization data
before data transmission.
The start event is configured setting the Receive Clock Mode Register (SSC_RCMR).
“Start” on page 602.
The frame synchronization is configured setting the Receive Frame Mode Register
(SSC_RFMR).
The receiver uses a shift register clocked by the receiver clock signal and the start mode
selected in the SSC_RCMR. The data is transferred from the shift register depending on the
data format selected.
When the receiver shift register is full, the SSC transfers this data in the holding register, the sta-
tus flag RXRDY is set in SSC_SR and the data can be read in the receiver holding register. If
another transfer occurs before read of the RHR register, the status flag OVERUN is set in
SSC_SR and the receiver shift register is transferred in the RHR register.
TXEN
RX Start
RF
SSC_TCMR.START
SSC_THR
Selector
Transmit Shift Register
Start
See “Frame Sync” on page 604.
0
TX Start
SSC_TCMR.STTDLY
SSC_TFMR.FSDEN
SSC_TFMR.DATNB
SSC_TFMR.DATDEF
SSC_TFMR.MSBF
1
SSC_TSHR
TX Controller counter reached STTDLY
SSC_TFMR.FSLEN
SSC_CRTXEN
SSC_CRTXDIS
TX Controller
SSC_SRTXEN
Transmitter Clock
TXEN
SAM3X/A
SAM3X/A
TD
See
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