User's Manual

L720 EVB User Manual

5.6 Headset Interface

If the audio codec chip MAX9867ETJ+ is used in L506_EVB_V3, the MIC input and sound

output are through headphone channels. Earphones need to use Chinese standard earphones.

Figure5-6: Chinese standard earphone

5.7 Antenna interface

The L720 antenna interface is located on the module load board mounted on the EVB board and

provides two antenna interfaces, one of which is the main antenna port, directly connected to the antenna

for wireless function, and the other is the GPS antenna interface. Main antenna interface adopts SMA

head, connected to the supporting external antenna by cable; GPS antenna USES IPX interface. As

shown in the figure below:

Figure5-7: Function module load plate and antenna interface