AK4533 Datasheet, PDF (4/40 Pages) Asahi Kasei Microsystems – Audio Codec with Touch Screen Controller

[ASAHI KASEI]
No.
Signal Name
Power Supply
7 DGND
8 VD
21 VB
26 VA1
27 AGND1
40 VA2
41 AGND2
Reset/Power Down
15 RESETB
16 PDB
Audio CODEC
9 SDO
10 SCLK
11 LRCK
13 SDI
14 MCLK
23 LOUT
24 ROUT
28 VCOM
29 VCOMAD
30 AFILT
31 AIN
32 MICOUT
33 MICIN
PIN/FUNCTION
I/O
Description
- Digital Ground
- Digital Power Supply : +3V
- Power Supply(Bulk) : +3V
- Analog Power Supply : +3V
- Analog Ground
- Analog Power Supply : +3V
- Analog Ground
I Reset Pin
The device is powered down except for VCOM when this pin is “L”. All
registers are cleared and are set to default values.
I Power down Pin
All blocks including VCOM are powered down when this pin is set to “L”.
O Audio ADC Serial Data Output
O Audio data Serial Output/Input Clock : 32fs
The device outputs ADC data through SDO pin at the falling edge of SCLK
clock. The device latches DAC (input) data through SDI pin at the rising
edge of SCLK clock.
O Left/Right channel Select Clock, 1fs
H: Left channel, L: Right channel
When both of ADC block and DAC block go into power-down mode, this pin
outputs “L”. Either of block is active, the device outputs LRCK clock.
I Audio DAC Serial Data Input
I Master Clock Input
256fs or 512fs, which is selected by MSEL bit in the Control Register, master
clock is input to this pin.
O DAC Left Channel Analog Output
Note) Load resistance must be greater than 10KΩ. Load capacitance must
be less than 50pF.
O DAC Right channel Analog Output
Note) Load resistance must be greater than 10KΩ. Load capacitance must
be less than 50pF.
O Analog Common Voltage Output
Reference voltage of all analog circuit block (VA/2)
Connect 4.7uF and 0.1uF capacitors
O Analog Common Voltage Output for ADC
Reference voltage of ADC block
Connect 4.7uF and 0.1uF capacitors
I Anti aliasing Filter for A/D Input
Connect 1nF capacitor.
I Analog Input
Input inverting analog signal which is output from MICOUT pin
1uF capacitor is connected between MICOUT pin and AIN pin.
O Microphone Analog Output
Output inverting analog signal with 20dB gain of MICIN signal.
I Microphone Analog Input
Input analog signal from microphone
<Revision 0.9a>
3
July 00