AKD4371-B Datasheet, PDF (2/33 Pages) Asahi Kasei Microsystems – 24bit DAC with Headphone Amplifier

[AKD4371-B]
Operation sequence
Evaluation Board Manual
1) Set up the power supply lines.
[VCC] (red) = 5.0V : for Regulator
[AGND] (black) = 0V : for analog ground
[DGND] (black) = 0V : for logic ground
Each supply line should be distributed from the power supply unit.
3.3V is supplied to AK4371 via the regulator.
2) Set up the evaluation mode, jumper pins. (See the followings.)
3) Power on.
The AK4371 and AK4116 should be resets once bringing SW1(DAC/DIR_PDN) “L” upon power-up.
And the AK7832 should be resets once bringing SW2(SPK_PDN) “L” upon power-up.
Evaluation mode
When evaluating the AK4371 using the PORT1(AK4116), it is possible to use the initial setting of the audio
interface format (24bit MSB justified). The AK4116 operates at fs of 32kHz or more. If the fs is slower than
32kHz, any other evaluation mode should be used.
When inputting the data from the PORT2, the AK4371’s audio interface format should be set to correspond
the input data’s audio interface format. Refer to the AK4371’s datasheet.
Applicable Evaluation Mode
(1) PLL Master Mode
(2) PLL Slave Mode
(2-1) PLL Reference Clock : MCKI pin
(2-2) PLL Reference Clock : BICK or LRCK pin
(3) External Slave Mode
(3-1) Evaluation using DIR (Optical Link) of AK4116 <default>
(3-2) Evaluation connecting AKD4371 with external DSP
(4) External Master Mode
<KM086201>
-2-
2007/07