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SM5847AF データシート(PDF) 21 Page - Nippon Precision Circuits Inc

部品番号 SM5847AF
部品情報  High-fidelity Digital Audio, Multi-function Digital Filter
PDF  30 Pages
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メーカー  NPC [Nippon Precision Circuits Inc]
ホームページ  http://www.npc.co.jp/en
Logo NPC - Nippon Precision Circuits Inc

SM5847AF データシート(HTML) 21 Page - Nippon Precision Circuits Inc

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SM5847AF
NIPPON PRECISION CIRCUITS—21
Group Delay
The data input to data output group delay is the delay
which occurs due to the digital filter calculations. It
is the time between the serial input data is com-
pletely read in (at rate fs) until the serial data is out-
put (at rate 8fs or 4fs, depending on the mode
selected).
tINPUT represents the LRCI clock rising edge after
the serial input data has been read in at rate fs.
tOUTPUT represents the WCKO clock falling edge at
the start of serial data output at rate 8fs or 4fs.
Table 13. Group delay
Mode
G r oup delay
Unit
CKSLN
SYNCN
tOUTPUT − tINPUT
L O W (256fs)
L O W
After reset, or sync mode
48.625/fs
sec
HIGH
Jitter-free mode
48.25/fs
− 49.0/fs
HIGH (192fs)
L O W
After reset, or sync mode
48.75/fs
HIGH
Jitter-free mode
48.375/fs
− 49.125/fs
Figure 6. Group delay timing (SYNCN = LOW)
1/fs
LRCI
WCKO
8fs
OMD=H
t OUTPUT
CKSLN=L
(256fs)
WCKO
4fs
OMD=L
WCKO
8fs
OMD=H
t OUTPUT
WCKO
4fs
OMD=L
t OUTPUT
t OUTPUT
serial data output (DOL,DOR)
CKSLN=H
(192fs)
t INPUT
1/fs
LRCI
48/fs
serial data input (DI/INF2N,
IW1N/DIL, IW2N/DIR)
serial data output (DOL,DOR)
serial data output (DOL,DOR)
serial data output (DOL,DOR)



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