Datasheet

Figure 44-13. Transmit Start Mode
X
TK
TF
(Input)
TD
(Output)
TD
(Output)
TD
(Output)
TD
(Output)
TD
(Output)
TD
(Output)
X BO B1
X
BO B1
BO B1
BO B1
BO B1BO B1
BO B1B1
BO
X
X
X
STTDLY
STTDLY
STTDLY
STTDLY
STTDLY
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
Figure 44-14. Receive Pulse/Edge Start Modes
X
RK
RF
(Input)
RD
(Input)
X BO B1
X
BO B1
BO B1
BO B1
BO B1BO B1
BO B1B1
BO
X
X
X
STTDLY
STTDLY
STTDLY
STTDLY
STTDLY
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
RD
(Input)
RD
(Input)
RD
(Input)
RD
(Input)
RD
(Input)
44.8.5 Frame Synchronization
The Transmit and Receive Frame Sync pins, TF and RF, can be programmed to generate different kinds of Frame
Sync signals. The Frame Sync Output Selection (FSOS) field in the Receive Frame Mode Register (SSC_RFMR)
and in the T
ransmit Frame Mode Register (SSC_TFMR) are used to select the required waveform.
• Programmable low or high levels during data transfer are supported.
• Programmable high levels before the start of data transfers or toggling are also supported.
If a pulse waveform is selected, the Frame Sync Length (FSLEN) field in SSC_RFMR and SSC_TFMR programs the
length of the pulse, from 1 bit time up to 256 bit times.
The periodicity of the Receive and Transmit Frame Sync pulse output can be programmed through the Period Divider
Selection (PERIOD) field in SSC_RCMR and SSC_TCMR.
44.8.5.1 Frame Sync Data
Frame Sync Data transmits or receives a specific tag during the Frame Sync signal.
SAM E70/S70/V70/V71 Family
Synchronous Serial Controller (SSC)
© 2019 Microchip T
echnology Inc.
Datasheet
DS60001527D-page 1121