AK4641 Datasheet, PDF (4/51 Pages) Asahi Kasei Microsystems – 16 BIT CODEC WITH BLUETOOTH INTERFACE

ASAHI KASEI
[AK4641]
PIN/FUNCTION
No. Pin Name
I/O
Function
1 MPE
O MIC Power Supply Pin for External Microphone
2 MPI
O MIC Power Supply Pin for Internal Microphone
3 INT
I Internal Microphone Input Pin (Mono Input)
4 VCOM
O
Common Voltage Output Pin, 0.45*AVDD
Bias voltage of ADC inputs and DAC outputs.
5 AVSS
- Analog Ground Pin
6 AVDD
- Analog Power Supply Pin
7 BVDD
- Power Supply Pin for 16bit Mono CODEC of Bluetooth I/F
8 BVSS
- Ground Pin for 16bit Mono CODEC of Bluetooth I/F
9 VCOC
O PLL Loop Filter Pin for 16bit Mono CODEC of Bluetooth I/F
10 PDN
I
Power-Down Mode Pin
“H”: Power up, “L”: Power down reset and initializes the control register.
11 TST1
I Test Pin. Connect to DVSS.
12 SCL
I Control Data Clock Pin
13 SDA
I/O Control Data Input Pin
14 SDTI
I Audio Serial Data Input Pin
15 SDTO
O Audio Serial Data Output Pin
16 LRCK
I Input/Output Channel Clock Pin
17 BICK
I Audio Serial Data Clock Pin
18 MCLK
I External Master Clock Input Pin
19 DVDD
- Digital Power Supply Pin
20 DVSS
- Digital Ground Pin
21 BSDTI
I Serial Data Input Pin for 16bit Mono CODEC of Bluetooth I/F
22 BSDTO
O Serial Data Output Pin for 16bit Mono CODEC of Bluetooth I/F
23 BSYNC
I Sync Signal Pin for 16bit Mono CODEC of Bluetooth I/F
24 BBICK
I Serial Data Clock Pin for 16bit Mono CODEC of Bluetooth I/F
25 TST2
I Test Pin. Connect to AVSS.
26 MOUT2
O Mono Line Output 2 Pin
27 ROUT
O Rch Stereo Line Output Pin
28 LOUT
O Lch Stereo Line Output Pin
29 MOUT−
O Mono Line Negative Output Pin
30 MOUT+
O Mono Line Positive Output Pin
31 AUX IN−
I Mono AUX Negative Input Pin
32 AUX IN+
I Mono AUX Positive Input Pin
33 AIN
I Analog Input Pin
34 MICOUT
O Microphone Analog Output Pin
35 MDT
I Microphone Detect Pin (Internal pull down by 500kΩ)
36 EXT
I External Microphone Input Pin (Mono Input)
Note: All input pins except analog input pins (INT, EXT, AIN, AUXIN+, AUXIN−, MDT) should not be left floating.
„ Handling of Unused Pin
The unused I/O pins should be processed appropriately as below.
Classification Pin Name
Analog Input INT, AUXIN+, AUXIN−, AIN, MDT, EXT
Analog Output
MPE, MPI, MOUT2, ROUT, LOUT, MOUT−, MOUT+,
MICOUT
Digital Input BSDTI, BSYNC, BBICK
Digital Output BSDTO
Setting
These pins should be open.
These pins should be open.
These pins should be connected to DVSS.
These pins should be open.
MS0301-E-00
-4-
2004/05