BU7839GVW Datasheet, PDF (11/16 Pages) Rohm – Digital Input Hi-Fi Class-D Headphone Amplifier

●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
MCLK Duty Cycle
Dmclk
40
-
60
Unit
MHz
%
Condition
Fmclk = 256fs or
384fs
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
Table.11 Audio I/F AC characteristic(at slave mode)
LRCLK
BCLK
Fbclk
SDI
Thdlr
Flrclk
Thdlr
Tsusdi Thdsdi
Fig.12 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
Unit
BCLK frequency
Fbclk
0.512
-
3.072 MHz
LRCLK frequency
Flrclk
8
-
48
kHz
SDI Setup Time
Tsusdi
80
-
-
ns
SDI Hold Time
Thdsdi
80
-
-
ns
Table.13 Audio I/F AC characteristic(at master mode)
Condition
Fbclk = 64fs
Flrclk = 1fs
LRCLK
BCLK
Fbclk
SDI
Flrclk
Tsusdi Thdsdi
Fig.14 Audio I/F AC timing(at master mode)
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