AK4490EQ FUNCTIONAL BLOCK DIAGRAM
[AK4490]
MS1648-J-03
2014/11
- 7 -
16 DEM1
I
De-emphasis Enable 1 Pin in Parallel Control Mode (Internal pull-down pin)
17
ACKS
I
Master Clock Auto Setting Mode Pin in Parallel Mode (Internal pull-down pin)
CAD1
I
Chip Address 1 Pin in Serial Control Mode
18 NC
-
No internal bonding.
Connect to GND.
19 VREFHR
I
Rch High Level Voltage Reference Input Pin
20 VREFHR
I
Rch High Level Voltage Reference Input Pin
21 VREFLR
I
Rch Low Level Voltage Reference Input Pin
21 VREFLR
I
Rch Low Level Voltage Reference Input Pin
23 VCMR
-
Right channel Common Voltage Pin,
Normally connected to VREFLR with a 10uF electrolytic cap.
24 NC
-
No internal bonding.
Connect to GND.
25 AOUTRP
O Rch Positive Analog Output Pin
26 AOUTRN
O Rch Negative Analog Output Pin
27 VDDR
-
Rch Analog Power Supply Pin, 4.75 7.2V
28 VDDR
-
Rch Analog Power Supply Pin, 4.75 7.2V
29 VSSR
Ground Pin
30 VSSR
Ground Pin
31 VSSL
Ground Pin
32 VSSL
Ground Pin
33 VDDL
-
Lch Analog Power Supply Pin, 4.75 7.2V
34 VDDL
-
Lch Analog Power Supply Pin, 4.75 7.2V
35 AOUTLN
O Lch Negative Analog Output Pin
36 AOUTLP
O Lch Positive Analog Output Pin
37 NC
-
No internal bonding.
Connect to GND.
38 VCML
-
Left channel Common Voltage Pin,
Normally connected to VREFLL with a 10uF electrolytic cap.
39 VREFLL
I
Lch Low Level Voltage Reference Input Pin
40 VREFLL
I
Lch Low Level Voltage Reference Input Pin
41 VREFHL
I
Lch High Level Voltage Reference Input Pin
42 VREFHL
I
Lch High Level Voltage Reference Input Pin
43 NC
-
No internal bonding.
Connect to GND.
44 AVDD
-
Analog Power Supply Pin, 3.0 3.6V
45 AVSS
-
Ground Pin
46 MCLK
I
Master Clock Input Pin
47 DVSS
-
Ground Pin
48 DVDD
-
Digital Power Supply Pin, 3.0 3.6V
Note: All input pins except internal pull-up/down pins must not be left floating.
FUNCTIONAL BLOCK DIAGRAM
DAC
VOUT1+
VOUT1
DAC
VOUT2+
VOUT2
DAC
VOUT3+
VOUT3
DAC
VOUT4+
VOUT4
DAC
VOUT5+
VOUT5
DAC
VOUT6+
VOUT6
AGND2
VDD
DGND
VCOM
VCC1
AGND1
VCC2
DAC
VOUT7+
VOUT7
DAC
VOUT8+
VOUT8
Digital Filter
and
Volume
Power Supply and
Common Voltage
SCKI
SCK Manager
RST
AMUTEO
AMUTEI
ZERO2
ZERO1
MODE
MD/SDA/DEMP
MC/SCL/FMT
MS/ADR0/RSV
TEST/ADR1/RSV
Control Interface
(SPI/I C/HW)
2
LRCK
BCK
DIN4
DIN3
DIN2
DIN1
Audio Interface
PCM1690
SBAS448A–OCTOBER 2008–REVISED JANUARY 2009
..............................................................................................................................................
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PCM1690
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