ASAHI KASEI

[AK9813A]

DAD03E-00

1999/05

- 7 -

Instruction Set

The AK9813A can be controlled for the following mode. The following mode is common to the LD I/F and the

CS IF. When LD I/F is selected, "A1" and "A0" are set by the external pins (EA0 pin and EA1 pin).

1

[

Õ:Don't Care]

A1

A0

CL WR D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Function

ÕÕ

0

0

D/A Channel

Digital data for D/A

D/A output

2

[

Õ:Don't Care]

A1

A0

CL WR D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Function

ADDRESS

1

0

D/A Channel

ÕÕÕÕÕÕÕÕ READ

3

[

Õ:Don't Care]

A1

A0

CL WR D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Function

ADDRESS

100000

ÕÕÕÕÕÕÕÕ ALL CHANNEL READ

• The outputs of all D/A converters are set by the data in the internal EEPROM.

4

[

Õ:Don't Care]

A1

A0

CL WR D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Function

ÕÕ

110000

ÕÕÕÕÕÕÕÕ WRITE ENABLE

• After WRITE ENABLE mode is executed, the programming to the internal EEPROM is enabled. Upon

power-up and after the execution of the ECL function, the AK9813A is in the programming disable state.

5

[

Õ:Don't Care]

A1

A0

CL WR D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Function

ÕÕ

111111

ÕÕÕÕÕÕÕÕ WRITE DISABLE

• After WRITE DISABLE mode is executed, the programming to the internal EEPROM is disabled.

6

[

Õ:Don't Care]

A1

A0

CL WR D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Function

ADDRESS

0

1

D/A Channel

Digital data for D/A

WRITE

• The digital data for D/A (D0aD7) is written into the specified address in the internal EEPROM. The state

of the internal EEPROM must be the programming enable state.

7

[

Õ:Don't Care]

A1

A0

CL WR D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Function

ADDRESS

1

1

D/A Channel

ÕÕÕÕÕÕÕÕ EEPROM DATA output

• The DO pin outputs the data in the internal EEPROM synchronously with the falling edge of of the input

pulse of the CLK pin.