Datasheet

ADSP-BF538/ADSP-BF538F
Rev. E | Page 41 of 60 | November 2013
Table 34. External Late Frame Sync
Parameter Min Max Unit
Switching Characteristics
t
DDTLFSE
Data Delay from Late External TFSx or External RFSx in multichannel mode, MFD = 0
1, 2
10.0 ns
t
DTENLFS
Data Enable from Late FS or multichannel mode, MFD = 0
1, 2
0ns
1
In multichannel mode, TFSx enable and TFSx valid follow t
DTENLFS
and t
DDTLFSE
.
2
If external RFSx/TFSx setup to RSCLKx/TSCLKx > t
SCLKE
/2, then t
DDTTE/I
and t
DTENE/I
apply; otherwise t
DDTLFSE
and t
DTENLFS
apply.
Figure 26. External Late Frame Sync
RSCLKx
RFSx
DTx
DRIVE
EDGE
DRIVE
EDGE
SAMPLE
EDGE
EXTERNAL RFSx IN MULTI-CHANNEL MODE
1ST BIT
t
DTENLFSE
t
DDTLFSE
TSCLKx
TFSx
DTx
DRIVE
EDGE
DRIVE
EDGE
SAMPLE
EDGE
LATE EXTERNAL TFSx
1ST BIT
t
DDTLFSE