ASAHI KASEI

[AKD4707-A]

<KM083602>

2007/01

- 2 -

1. Evaluation Board Manual

Operation sequence

1) Set up the power supply lines.

[VP]

(Orange)

= 11.4

∼ 12.6V (typ. 12V, for VP pin)

[VD]

(Red)

= 4.75

∼ 5.25V (typ. 5.0V, for VD pin)

[VVD]

(Red)

= 4.75

∼ 5.25V (typ. 5.0V, for VVD1 pin, VVD2 pin)

[VCC]

(Red)

= 5.0V (for digital logic)

[AGND]

(Black)

= 0V (for analog ground: VSS, VVSS)

[DGND]

(Black)

= 0V (for digital ground)

Each supply line should be distributed from the power supply unit.

2) Set-up jumper pins. (See the followings.)

3) Power on.

The AK4707 should be reset once bringing SW1 “L” upon power-up.

Jumper pins set up

[JP1] (GND): Analog ground and Digital ground

OPEN:

Separated

SHORT:

Common. (The connector “DGND” can be open.) <Default>

[JP2] (VD): Regulator +5V or VD connector

OPEN:

VD pin is supplied from VD connector.

SHORT:

VD pin is supplied to regulator +5V. (The connector “VD” can be open.) <Default>

[JP3] (VVD): VD connector or VVD connector

OPEN:

VVD1 and VVD2 pins are supplied from VVD connector.

SHORT:

VVD1 and VVD2 pins are supplied from VD connector.

(The connector “VVD” can be open.) <Default>

[JP4] (VCC): VVD connector or VCC connector

OPEN:

Logic voltage is supplied from VCC connector.

SHORT:

Logic voltage is supplied form VVD connector. (The connector “VCC” can be open.) <Default>

The regulator can be supplied 5.0V to all circuits by shorting JP2, JP3 and JP4 and supplying 12V to VP connector.