AK4342 Datasheet, PDF (4/43 Pages) Asahi Kasei Microsystems – 24-Bit Stereo DAC with HP-AMP & 2V Line-Out

ASAHI KASEI
[AK4342]
PIN/FUNCTION
No. Pin Name I/O
Function
1 ^SDA
I/O
Control Data Input/Output Pin (I2C pin = “H”)
An external pull-up resister is required.
CDTI
I Control Data Input Pin (I2C pin = “L”)
2 ^SCL
I
Control Data Clock Pin (I2C pin = “H”)
An external pull-up resistor is required.
CCLK
I Control Data Clock Pin (I2C pin = “L”)
3 ^CAD0
CSN
I Chip Address 0 Select Pin (I2C pin = “H”) (Internal Pull-up Pin to TVDD pin)
I Control Data Chip Select Pin (I2C pin = “L”) (Internal Pull-up Pin to TVDD pin)
4 MCLK
I Master Clock Input Pin
5 BICK
I
Serial Bit Clock Pin
This clock is used to latch audio data.
6 LRCK
I
L/R Clock Pin
This clock determines which audio channel is currently being input on SDATA pin.
7 SDATA
I Audio Serial Data Input Pin
Power-down & Reset Pin
8 PDN
I When at “L”, the AK4342 is in power-down mode and is held in reset.
The AK4342 must be reset once upon power-up.
9 CP
O Positive Charge Pump Capacitor Terminal Pin
10 CN
I Negative Charge Pump Capacitor Terminal Pin
11 PVDD
- Charge Pump Circuit Positive Power Supply Pin
12 PVSS
- Charge Pump Circuit Ground Pin
13 PVEE
O Charge Pump Circuit Negative Voltage Output Pin
14 HVEE
-
Headphone Amp Negative Power Supply Pin
Connected to PVEE pin
15 HPL
O Lch Headphone Amp Output Pin
16 HPR
O Rch Headphone Amp Output Pin
17 HVDD
- Headphone Amp Positive Power Supply Pin
18 HVSS
- Headphone Amp Ground Pin
19 LOUT
O Lch Lineout Output Pin
20 ROUT
O Rch Lineout Output Pin
21 LAUX
O Lch Auxiliary Output Pin
22 RAUX
O Rch Auxiliary Output Pin
23 LIN
I Lch Analog Input Pin
24 RIN
I Rch Analog Input Pin
25 MUTET
O
Mute Time Constant Control Pin
Connected to AVSS pin through a 1µF capacitor for mute time constant.
Common Voltage Output Pin
26 VCOM
O Normally connected to AVSS pin with 0.1µF ceramic capacitor in parallel with a 2.2µF
electrolytic capacitor.
27 AVDD
- Analog Power Supply Pin
28 AVSS
- Analog Ground Pin
29 DVSS
- Digital Ground Pin
30 DVDD
- Digital Power Supply Pin
31 TVDD
- Digital Interface Power Supply Pin
32 I2C
I
Control Mode Select Pin (Internal Pull-up Pin to TVDD pin)
“H”: I²C Bus, “L”: 3-wire Serial
Note: Do not allow digital input pins except analog input pins (RIN and LIN) and internal pull-up pins (CAD0/CSN and
I2C) to float.
MS0506-E-02
-4-
2006/07