AKD4122 Datasheet, PDF (19/36 Pages) Asahi Kasei Microsystems – Evaluation board Rev.A for AK4122

ASAHI KASEI
[AKD4122]
n Other jumper pins set up
1. JP1 (GND) : Analog ground and Digital ground
OPEN: Separated.
SHORT: Common. (The connector “DGND” can be open.) <Default>
2. JP22 (VDD2) : DVDD and VCC
OPEN: Separated.
SHORT: Common. (The connector “VCC” can be open.) <Default>
3. JP23 (VDD1) : AVDD and DVDD
OPEN: Separated.
SHORT: Common. (The connector “DVDD” can be open.) <Default>
4. JP24 (REG) : +5V and AVDD
OPEN: Separated.
SHORT: Common. (The connector “AVDD” can be open.) <Default>
The regulator can be supplied 3.3V to all circuits by shorting JP22, 23 and 24 and supplying 5V to +5V connector.
n The function of the toggle SW
Upper-side is “H” and lower-side is “L”.
[SW5] (SMUTE): Soft mute of AK4122
[SW6] (PDN): Resets the AK4122. Keep “H” during normal operation.
The AK4122 should be resets once bringing “L” upon power-up.
[SW7] (PDN1): Resets the AK4114 (U12). Keep “H” during normal operation.
The AK4114 (U12) should be resets once bringing “L” upon power-up.
Keep “L” when AK4114 (U12) is not used.
[SW8] (PDN2): Resets the AK4114 (U13). Keep “H” during normal operation.
The AK4114 (U13) should be resets once bringing “L” upon power-up.
Keep “L” when AK4114 (U13) is not used.
[SW9] (PDN3): Resets the AK4114 (U14). Keep “H” during normal operation.
The AK4114 (U14) should be resets once bringing “L” upon power-up.
Keep “L” when AK4114 (U14) is not used.
<KM071100>
- 19 -
2003/06