AKD4344-A 데이터 시트보기 (PDF) - Asahi Kasei Microdevices

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AKD4344-A

AK4344 Evaluation Board Rev.2

Asahi Kasei Microdevices 

[AKD4344-A]

The function of the toggle SW

[SW1] (AK4344-PDN): Resets the AK4344. Keep “H” during normal operation.

The AK4344 should be reset once by bringing SW1 “L” upon power-up.

[SW2] (AK4112B-PDN): Resets the AK4112B. Keep “H” during normal operation.

The AK4112B should be reset once by bringing SW2 “L” upon power-up.

Analog Output Circuit

The DAC of AK4344 outputs analog audio signals through J3 and J4.

C13

22u

R7

220

AK4344-LOUT

R9

10k

J3

BNC-R-PC

1

C100

1n

2LOUT

3

4

5

C17

J4

22u

R12

BNC-R-PC

220

AK4344-ROUT

1

2ROUT

3

4

R13

C101 5

10k

1n

Figure 2. LOUT/ROUT Output circuit

* AKEMD assumes no responsibility for the trouble when using the above circuit examples.

Serial control

The AKD4344-A can be controlled via the printer port (parallel port) of IBM-AT compatible PC. Connect PORT4

(uP-I/F) to PC by 10-line flat cable packed with the AKD4344-A. Take care of the direction of connector. There is a

mark at pin#1. The pin layout of PORT4 as shown Figure 3.

PORT4

uP I/F

2

10

Red

1

9

Figure 3. PORT4 pin layout

<KM087902>

-6-

2007/07

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