BU7839GVW_10 Datasheet, PDF (11/16 Pages) Rohm – Digital Input Class-D Headphone Amplifier

BU7839GVW
Technical Note
●Audio I/F part
■At slave mode.
Ta=25degree ,DVDD=DVDDIO=1.5V, VDD_R=VDD_L=PLLVDD=2.8 V
Parameter
Symbol
MIN
Limit
TYP
MAX
MCLK frequency *1
Fmclk
2.048
-
18.432
Unit
Condition
MHz Fmclk = 256fs or 384fs
MCLK Duty Cycle
Dmclk
40
-
60
%
BCLK frequency
Fbclk
0.512
-
3.072 MHz
Fbclk = 64fs
BCLK Duty Cycle
Dbclk
40
-
60
%
LRCLK frequency
Flrclk
8
-
48
kHz
Flrclk = 1fs
LRCLK Hold Time
Thdlr
80
-
-
ns
SDI Setup Time
Tsusdi
80
-
-
ns
SDI Hold Time
Thdsdi
80
-
-
ns
*1 It is not necessary to adjust the phase of MCLK and BCLK and LRCLK, but it is necessary to be something related to synchronization
LRCLK
BCLK
Fbclk
SDI
Thdlr
Flrclk
Thdlr
Tsusdi Thdsdi
Fig.5 Audio I/F AC timing(at slave mode)
■At master mode
Ta=25degree,DVDD=DVDDIO=1.5V, VDD_R=VDD_L=PLLVDD=2.8V
Parameter
Symbol
MIN
Limit
TYP
MAX
BCLK frequency
Fbclk
0.512
-
3.072
LRCLK frequency
Flrclk
8
-
48
SDI Setup Time
Tsusdi
80
-
-
SDI Hold Time
Thdsdi
80
-
-
Unit
Condition
MHz
kHz
ns
ns
Fbclk = 64fs
Flrclk = 1fs
LRCLK
BCLK
SDI
Fbclk
Flrclk
Tsusdi Thdsdi
Fig.6 Audio I/F AC timing(at master mode)
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11/15
2010.05 - Rev.A