AKD4125-A Datasheet, PDF (2/20 Pages) Asahi Kasei Microsystems – digital sample rate converter.

ASAHI KASEI
[AKD4125-A]
„ Operation sequence
1) Set up the power supply lines.
[VCC]
(red) = +5V (for regulator)
[DGND] (black) = 0V
Each supply line should be distributed from the power supply unit.
The regulator can be supplied 3.3V to all circuits.
2) Set up the evaluation mode, jumper pins. (See the followings.)
3) Power on.
The AK4125 should be reset once bringing SW1 (PDN) “L” upon power-up.
„ Evaluation mode
(1) Setting for Input port
(1) When using DIR function of AK4114 (U3)
When using PORT1 (DIR) or J1 (COAX), nothing should be connected to PORT2 (INPUT).
JP2
IBICK
JP3
SDTI
JP4
ILRCK
• SW3 setting (See Table 1)
Upper-side is “H” and lower-side is “L”.
The audio interface format of the AK4114 is fixed to 24bit, MSB justified. IDIF2-0 and PLL2-0 of SW3
should be used by default setting.
SW3 No.
1
2
3
4
5
6
7
Name
DITH
PLL2
PLL1
PLL0
IDIF0
IDIF1
IDIF2
ON (“H”)
Dither ON
OFF (“L”)
Dither OFF
PLL Mode Setting
Fixed to default
AK4125 Audio I/F Format Setting
Fixed to default
Table 1. SW3 Setting
Default
L
H
L
H
L
H
L
<KM078701>
-2-
2006/04