SAM7X128_14 Datasheet, PDF (347/662 Pages) ATMEL Corporation – ARM-based Flash MCU

Table 31-3. Data Frame Registers
Transmitter
Receiver
SSC_TFMR
SSC_RFMR
SSC_TFMR
SSC_RFMR
SSC_TFMR
SSC_RFMR
SSC_TFMR
SSC_RFMR
SSC_TFMR
SSC_TFMR
SSC_TCMR
SSC_RCMR
SSC_TCMR
SSC_RCMR
Field
DATLEN
DATNB
MSBF
FSLEN
DATDEF
FSDEN
PERIOD
STTDLY
Length
Up to 32
Up to 16
Up to 16
0 or 1
Up to 512
Up to 255
Comment
Size of word
Number of words transmitted in frame
Most significant bit first
Size of Synchro data register
Data default value ended
Enable send SSC_TSHR
Frame size
Size of transmit start delay
Figure 31-13. Transmit and Receive Frame Format in Edge/Pulse Start Modes
Start
PERIOD
TF/RF⁽¹⁾
FSLEN
TD
(If FSDEN = 1)
Sync Data
Default
From SSC_TSHR FromDATDEF
Data
From SSC_THR
TD
(If FSDEN = 0)
RD
Default
From DATDEF
Sync Data
To SSC_RSHR
Ignored
Data
From SSC_THR
Data
To SSC_RHR
STTDLY
DATLEN
Start
Data
From SSC_THR
Data
From SSC_THR
Default
Sync Data
FromDATDEF
Default
From DATDEF
Data
To SSC_RHR
Ignored
Sync Data
DATLEN
Note: 1. Example of input on falling edge of TF/RF.
Figure 31-14. Transmit Frame Format in Continuous Mode
Start
DATNB
TD
Data
Data
From SSC_THR
From SSC_THR
DATLEN
DATLEN
Default
Note:
Start: 1. TXEMPTY set to 1
2. Write into the SSC_THR
1. STTDLY is set to 0. In this example, SSC_THR is loaded twice. FSDEN value has no effect on the transmis-
sion. SyncData cannot be output in continuous mode.
SAM7X Series [DATASHEET]
6120K–ATARM–11-Feb-14
347