Rohm BU7858KN, Technical Note

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● BLOCK CHART
【
BU7858KN
】
Fig.24 BU7858KN Block Diagram
Fig.25 BU7858KN Pin Assignment (TOP VIEW)
16bit
DAC
16bit
DAC
Digital
Audio
I/F
Digit
-al
ATT
BIAS
RING
BCLK
LRCLK
SDTI
CVCOM NRST SCLK SDATA SCS
SPO
AVSS AVDD DVSS DVDD
MEL_R
CSTEP
LPF
LPF
RXI
HP_L
HP_R
ATT2
MIX-
SEL1
EXTO
MIX-
SEL2
MIX-
SEL3
MIX-
SEL4
MEL_L
EXTI
600Ω
16Ω
16Ω
ATT1
+
MCLKI
ATT3
SW1
SW2
Serial Control
CA_L
CA_R
CSTART
ATT5
MCLKO
PLLC
PLL
+
-
+
-
ATT4
+
-
+
-
ATT
ATT
BC
L
K
SP Amp
SPO
EXT
O
CA_R
CSTART
EXTI
A
V
DD
CVCOM
HP_R
CSTEP
BU7858KN
A
VSS
14
13
12
11
10
21
20 19 18 17 16 15
HP_
L
CA_
L
8
9 NRST
NCS
MEL_L
RXI
RING
MEL_R
PLLC
22
23
24
25
26
28
27
MCLKO
MCLKI
1 2 4 5 6 7 3
LR
C
L
K
BC
LK
SDT
I
DVDD
DVSS SCLK
SD
A
TA