AKD4120_06 Datasheet, PDF (2/47 Pages) Asahi Kasei Microsystems – Sample Rate Converter with Mixer and Volume

ASAHI KASEI
[AKD4120]
EVALUATION BOARD MANUAL
„ Operation sequence
1.Set up the jumper for power supply
[JP11 (D3V) ]
Select power supply for VDD pin of the AK4120
Short : 3.3V is supplied from 3V-1 jack (Default)
Notihg should be connected to VCC-3V.
Open : 3.3V is supplied from VCC-3V.
2.Set up power supply lines
VCC= 5V
VCC-3V= 3.3V
3V-1= 3.3V
: Power supply for TVDD of the AK4112B and AK4114, and for logic circuit.
: This jack is used when VDD of the AK4120 is supply from this.
In this case, JP11 should be open.
: Power supply for logic, the AK4112B and the AK4114.
In this case, JP11 should be short and notihg should be connected to VCC-3V.
GND= 0V
: This is ground for all regions in this board.
3. Set up the evaluation modes by jumper pins and DIP switches. (See the next section.)
4. Power on.
The AK4120 should be reset once by bringing SW2 “L” upon power-up.
The AK4120 is reset at SW2= “L” and exits resetting at SW2= “H”.
When SW2 = “L”, the internal registers cannot be written.
<KM066802>
-2-
2006/12