Rohm BU7858KN, Technical Note

Page: 3 / 25

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・
Audio Interface
Parameter Symbol Min Typ Max Unit
Condition
MCLKI Frequency fMCLK 4.096 － 18.432 MHz
MCLKI Duty Ratio dMCLK 45
－
55 %
LRCLK Frequency fs 16
－
48 kHz
LRCLK Duty Ratio dLR 45 － 55 %
BCLK Frequency fBCK 0.512
－
3.072 MHz
BCLK Duty Ratio dBCK 45 － 55 %
LRCLK edge to BCLK ↑ Time tLRS 50 － － ns
BCLK
↑
to LRCLK Edge Time tSLR 50
－ －
ns
Data Hold Time tSDH 50 － － ns
Data Set-up Time tSDS 50
－ －
ns
【
BU7893GU
】
･
Whole Block
Unless otherwise specified
、
Ta=25
℃、
DVDD_CORE=1.8V
、
DVDD_IO=1.8V
、
AVDD=2.8V
、
Digital input terminal is fixed with
DVDD_IO ”L” or ”H” level 、 The gain settings of the audio paths are all 0dB, and no signal
Parameter Symbol Min Typ Max Unit Condition
DVDD_CORE Stand-by Current
(Core logic block)
ISTCO － － 10 μ A standby ， CLKI = DVSS
DVDD_IO Stand-by Current ISTIO
－ －
5 μ A standby
，
CLKI = DVSS
AVDD Stand-by Current ISTA
－ －
5 μ A standby
DVDD_CORE Operation Current IDDCO
－
5 10 mA
DVDD_IO Operation Current IDDIO － 0.1 1 mA
BCLK
，
LRCLK = Input mode
MCLK = L output
AVDD Operation Current 1
(Analog melody)
IDDA1
－
1.6 2.8 mA
ANAINL
→
MIX1
→
SPOL
ANAINR
→
MIX2
→
SPOR
AVDD Operation Current 2
(Digital melody)
IDDA2
－
6.0 10.0 mA
SDI → MIX1 → SPOL
SDI
→
MIX2
→
SPOR
TCXOI = 19.8MHz ， fs = 44.1kHz
･ DC Characteristic
Parameter Termin
-al
Symbol Min Typ Max Unit
Condition
L Output Voltage
Vold
All output
terminal ※
1
0
－
0.30 V Iol=+0.8mA
H Output Voltage
Vohd
All output
terminal ※
1
DVDD_IO
-0.30
－
DVDD_IO V Ioh=-0.8mA
L Level Input Voltage1
Vild1
All input
terminal ※
2
-0.3 － DVSS+0.5 V
L Level Input Voltage 2
Vild2 CLKI ※
3
-0.3 － ※ 3 V
H Level Input Voltage 1
Vihd1
All input
terminal ※
2
DVDD_IO
-0.5
－
DVDD_IO
+0.3
V
H Level Input Voltage 2
Vihd2 CLKI ※
3
※
3
－
DVDD_CORE
+0.3
V
L Level Input Current
Iild
All input
terminal ※
2
-1
－
1 μ A
Input terminal voltage
is DVSS
H Level Input Current 1
Iihd1
All input
terminal ※
2
-1 － 1 μ A
Input terminal voltage
is DVDD_IO
H Level Input Current 2
Iihd2 CLKI ※
3
-1
－
1 μ A
Input terminal voltage
is DVDD_CORE
Output OFF Current
Iozd
Hi-Z
terminal ※
4
-10
－
10 μ A
※
1 : They also contain interactive terminals that are set output state.
※ 2 : They also contain interactive terminals that are set input state.
※
3 : Please connect 100pF coupling capacitor and input 0.5V
P-P
or more when you input through coupling capacitor.
※ (In address 15h CLKSEL1=0 、 CLKSEL0=1)
※
4 : At interactive terminals of input state or three-state terminals of output-disable state