AK4370 View Datasheet(PDF) - Asahi Kasei Microdevices

Part Name

Description

Manufacturer

AK4370

24-Bit 2ch DAC with HP-AMP & Output Mixer

Asahi Kasei Microdevices 

ASAHI KASEI

[AK4370]

PIN/FUNCTION

No. Pin Name

1 SDATA

2 BICK

3 LRCK

4 MCKI

5 DVDD

6 VSS2

7 SDA

CDTI

8 SCL

CCLK

9 CAD0

CSN

10 PDN

11 I2C

12 MUTET

13 LOUT

14 ROUT

15 VCOM

16 AVDD

17 HVDD

18 VSS1

19 HPR

20 HPL

21 RIN2

22 LIN2

23 RIN1

IN+

24 LIN1

IN−

I/O

Function

I Audio Serial Data Input Pin

I/O Audio Serial Data Clock Pin

I/O Input / Output Channel Clock Pin

I External Master Clock Input Pin

- Digital Power Supply Pin, 1.6 ∼ 3.6V

- Ground 2 Pin. Connected to VSS1.

I/O Control Data Input/Output Pin (I2C mode : I2C pin = “H”)

I Control Data Input Pin (3-wire serial mode : I2C pin = “L”)

I Control Data Clock Pin (I2C mode : I2C pin = “H”)

I Control Data Clock Pin (3-wire serial mode : I2C pin = “L”)

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

I

When “L”, the AK4370 is in power-down mode and is held in reset.

The AK4370 should always be reset upon power-up.

I

Control Mode Select Pin

“H”: I2C Bus, “L”: 3-wire Serial

O

Mute Time Constant Control pin

Connected to VSS1 pin with a capacitor for mute time constant.

O Lch Stereo Line Output Pin

O Rch Stereo Line Output Pin

O

Common Voltage Output Pin

Normally connected to VSS1 pin with a 2.2μF electrolytic capacitor.

- Analog Power Supply Pin, 1.6 ∼ 3.6V

- Power Supply Pin for Headphone Amp, 1.6 ∼ 3.6V

- Ground 1 Pin

O Rch Headphone Amp Output

O Lch Headphone Amp Output

I Rch Analog Input 2 Pin

I Lch Analog Input 2 Pin

I Rch Analog Input 1 Pin (LDIF bit =“0” : Single-ended Input)

I Positive Line Input Pin (LDIF bit =“1” : Full-differential Input)

I Rch Analog Input 1 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. MCKI pin can be left floating only when PDN pin = “L”.

MS0595-E-00

-5-

2007/03

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