Preliminary

Avance Logic, Inc.

ALC202

- 21 -

Rev0.62

http://www.realtek.com.tw

Figure 5.8-3 shows another simple way to implement jack detect function without using ALC202’s JD

pin. It is especially easy for motherboard maker. No extra components needed, just layout issue.

Once the HP-OUT jack is plugged in, output signals to LINE-OUT will be isolated, no signals output at

LINE-OUT jack. The only drawback to this plan is software will not sense the HP-OUT jack is plugged

in. It may be not convenient for software to pay attention to special application.

Fig5.9-3 Implement Jack-Detect function without using ALC202’s pin

HP-OUT-R

HP-OUT-L

HP-OUT

1

2

3

4

5

+100uf

+100uf

LINE-OUT

1

2

3

4

5

A simple way to implement jack-detect function without

using ALC202's JD pin