Or 2 External Frame Syncs - Analog Devices ADSP-BF506F Hardware Reference Manual

Functional Description
Figure 20-9. TX Mode, 0 Frame Syncs

1 or 2 External Frame Syncs

In these modes, an external receiver can frame data sent from the PPI.
Both 1-sync and 2-sync modes are supported. The top diagram in
Figure 20-10 shows the 1-sync case, while the bottom diagram illustrates
the 2-sync mode.

There is a mandatory delay of 1.5
programmed in
sync(s) and the transfer of valid data out through the PPI.
Figure 20-10. TX Mode, 1, or 2 External Frame Syncs
20-18
PPIx
8- TO 16-BIT DATA
PPI_CLK
, between assertion of the external frame
PPI_DELAY
DATA
RECEIVER
FRAMESYNC
DATA
8–16 BITS DATA
CLK
DATA
RECEIVER
FRAMESYNC1
FRAMESYNC2
DATA 8–16 BITS DATA
CLK
ADSP-BF50x Blackfin Processor Hardware Reference
RECEIVER
CLK
cycles, plus the value
PPI_CLK
PPI
PPI_FS1
PPIx
PPI_CLK
PPI
PPI_FS1
PPI_FS2
PPIx
PPI_CLK