AK4372 Datasheet, PDF (5/62 Pages) Asahi Kasei Microsystems – DAC with built-in PLL & HP-AMP

[AK4372]
PIN/FUNCTION
No. Pin Name I/O
Function
A1 SDATA
I Audio Serial Data Input Pin
B2 BICK
I/O Audio Serial Data Clock Pin
B3 LRCK
I/O Input / Output Channel Clock Pin
A3 MCKI
I External Master Clock Input Pin
C3 DVDD
- Digital Power Supply Pin, 1.6 ∼ 3.6V
A4 VCOC
O
Output for Loop Filter of PLL Circuit
This pin must be connected to VSS2 with one resistor and one capacitor in series.
A5 VSS2
- Ground 2 Pin. Connected to VSS1.
B4 MCKO
O Master Clock Output Pin
C4 ^SDA
CDTI
I/O Control Data Input/Output Pin (I2C mode : I2C pin = “H”)
I Control Data Input Pin (3-wire serial mode : I2C pin = “L”)
B5 ^SCL
CCLK
I Control Data Clock Pin (I2C mode : I2C pin = “H”)
I Control Data Clock Pin (3-wire serial mode : I2C pin = “L”)
C5 ^CAD0
CSN
I Chip Address 0 Select Pin (I2C mode : I2C pin = “H”)
I Chip Select Pin (3-wire serial mode : I2C pin = “L”)
Power-down & Reset
D5 PDN
I
When “L”, the AK4372 is in power-down mode and is held in reset.
The AK4372 must be reset once upon power-up.
D3 I2C
I
Control Mode Select Pin
“H”: I²C Bus, “L”: 3-wire Serial
E5 MUTET
O
Mute Time Constant Control pin
Connected to the VSS1 pin with a capacitor for mute time constant.
D4 LOUT
O Lch Stereo Line Output Pin
E4 ROUT
O Rch Stereo Line Output Pin
E3 VCOM
O
Common Voltage Output Pin
Normally connected to the VSS1 pin with a 2.2μF electrolytic capacitor.
E2 AVDD
- Analog & PLL Power Supply Pin, 1.6 ∼ 3.6V
E1 VSS1
- Ground 1 Pin
D2 HPR
O Rch Headphone Amp Output
D1 HPL
O Lch Headphone Amp Output
C1 MIN
I Mono Analog Input Pin
B1 ^RIN
IN+
I Rch Analog Input Pin (LDIF bit =“0” : Single-ended Input)
I Positive Line Input Pin (LDIF bit =“1” : Full-differential Input)
C2 ^LIN
IN−
I Rch Analog Input Pin (LDIF bit =“0” : Single-ended Input)
I Negative Line Input Pin (LDIF bit =“1” : Full-differential Input )
Note 1. All digital input pins (I2C, SDA/CDTI, SCL/CCLK, CAD0/CSN, SDATA, LRCK, BICK, MCKI, PDN) must not
be left floating. The MCKI pin can be left floating only when the PDN pin = “L”.
MS0684-E-02
-5-
2008/12