User’s Manual

2.4.28Audio Connector (JP4)

Signal

PIN

PIN

Signal

Mic-In

1

2

Mic Bais

GND

3

4

GND

 

 

 

 

Line-Out L

5

6

Line-Out R

Speaker L

7

8

Speaker R

 

 

 

 

Line-In L

9

10

Line-In R

GND

11

12

NC

 

 

 

 

GND

13

14

NC

GND

15

16

NC

 

 

 

 

2.4.28.1 Signal Description – Audio Connecter (JP4)

Signal

Signal Description

Mic / Mic Bias

The MIC signal is used for microphone input. This input is fed to the left

 

microphone channel.

 

Mic Bias provides 3.3V supplied through 3.2K Ω with capacitive decoupling to

 

GND. This signal may be used for bias of some microphone types.

Line-In L/R

Left and right line in signals.

 

 

Line-Out L/R

Left and right line out signals. Both signals are capacitor coupled and should have

 

GND as return.

Speaker L/R

Left and right speaker out signals

 

 

ECM-5510 User’s Manual 59