4114877
Rev 5.0
October 12, 2015
32
Development Kit User Guide
Interfaces
3.11. JTAG
Figure 22. JTAG Connector
Warning:
This interface is not available for customer use. Default configurations should not be tampered with.
3.12. Antenna Connections
Note:
This interface is not supported on the HL6528RDx.
Three SMA connectors are available on the HL Series Development Kit for main RF, 4G diversity and
GNSS antenna connections.
Figure 23. RF, 4G Diversity and GNSS Antenna Connectors
3.13. RTC Backup Battery
Note:
This interface is not supported on the HL6528RDx.
The HL Series Development Kit provides an input signal, BAT_RTC, for connecting a coin battery.
This pin is used as a backup power supply to preserve the date and time when VBATT is switched
OFF (no VBATT).
Connect pins 1 and 2 of CN406 with a jumper to use this feature.
Figure 24. RTC Coin Battery Location
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