Audio (CN11)

A full featured AC97 compliant audio port is available on CN11. It provides a mono microphone input, stereo line level input, and a stereo output that can be configured as line level or headphone level. The output is configured in the BIOS setup utility. When used as a headphone output, it will drive 32 Ohm speaker at 50mW.

Table 32 Audio Connector (CN11)

 

10-Pin DIL Pin Signal

Function

 

In/Out

 

 

 

 

 

 

 

 

 

 

1

MIC_VREF

2.2V Supply to bias

 

out

 

 

 

 

microphones. 5mA max.

 

 

 

 

 

 

 

 

 

 

2

MIC_IN

Microphone input. 1V RMS or

in

 

 

 

 

0.1V RMS.

 

 

 

 

 

 

 

 

 

 

 

 

3

GND

Signal GND

 

GND

 

 

 

 

 

 

 

 

4

LINE_IN_LEFT

Line level input for left channel.

in

 

 

 

 

1V RMS nominal.

 

 

 

 

 

 

 

 

 

 

 

 

5

GND

Signal GND

 

GND

 

 

 

 

 

 

 

 

6

LINE_IN_RIGHT

Line level input for right channel.

in

 

 

 

 

1V RMS nominal.

 

 

 

 

 

 

 

 

 

 

 

 

7

GND

Signal GND

 

GND

 

 

 

 

 

 

 

 

8

OUTPUT_LEFT

Left channel output. Selectable

out

 

 

 

 

as line level (1V RMS) or

 

 

 

 

 

 

headphone.

 

 

 

 

 

 

 

 

 

 

 

 

9

GND

Signal GND

 

GND

 

 

 

 

 

 

 

 

10

OUTPUT_RIGHT

Left channel output. Selectable

out

 

 

 

 

as line level (1V RMS) or

 

 

 

 

 

 

headphone.

 

 

 

 

 

 

 

 

 

 

 

 

9

7

 

5

 

3

1

 

 

 

 

 

 

 

 

GND

GND

 

GND

 

GND

MIC_VREF

 

 

 

 

 

 

 

OUTPUT_RIGHT

OUTPUT_LEFT

 

LINE_IN_RIGHT

 

LINE_IN_LEFT

MIC_IN

 

 

 

 

 

 

 

 

10

8

 

6

 

4

2

 

48 CMX158886 cpuModule

BDM-610000049 Rev G

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IBM BDM-610000049 user manual Audio CN11, Audio Connector CN11, Pin DIL Pin Signal Function In/Out

BDM-610000049 specifications

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