BU9414FV Datasheet, PDF (54/61 Pages) Rohm – 32bit Audio DSP

BU9414FV
13. Audio Interface Signal Specification
○Electric specification and timing of MCK, BCK, LRCK, and SDATA1 and SDATA2
1/ ｆM C L K
MCLK
LRCK
1/fLRCK
tBCK
BCK
tBCKH
tBCKL
Fig 1-2 Clock timing
LRCK
BCK
S D A T A 1 ,S D A T A 2
tBLRDG
tLBRDG
tSU;SD
tHD;SD
Fig 1-3 Audio interface timing
Technical Note
Parameter
Sign
Min.
Max.
1
MCK
2
Frequency
DUTY
3
LRCK
4
Frequency
DUTY
5
Cycle
6 BCK
H width
7
L width
8 It is time to the edge of LRCK from a BCK rising edge.*1
9 It is time to a BCK rising edge from the edge of LRCK.*1
10 Setup time of SDATA
11 Hold time of SDATA
fSCLK
dSCLK
fLRCK
dLRCK
tBCK
tBCKH
tBCKL
tBLRDG
tLBRDG
tSU;SD
tHD;SD
4.096
40
32
40
325
130
130
20
20
20
20
24.576
60
48
60
－
－
－
－
-
-
－
*1 This standard value has specified that the edge of LRCK and the rising edge of BCK do not overlap.
Unit
MHz
%
kHz
%
ns
ns
ns
ns
ns
ns
ns
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2012.03 - Rev.A