NB-IoT
Module Series
BC660K-GL Hardware Design
BC660K-GL_Hardware_Design 34 / 57
3.12. GRFC Interfaces*
The module provides two generic RF control interfaces for the control of external antenna tuners.
Table 17: Pin Definition of GRFC Interfaces
Pin Name
Pin No.
Description
Comment
GRFC1
54
Generic RF controller
1.8 V power domain.
If unused, keep these pins open.
GRFC2
55
Generic RF controller
3.13. NETLIGHT Interface*
NETLIGHT can be used to indicate the network status of the module.
Table 18: Pin Definition of NETLIGHT Interface
Pin Name
Pin No.
Description
Comment
NETLIGHT
16
Indicate the module's network activity status
-
A reference design for NETLIGHT is shown below.
Module
NETLIGHT
4.7 k
Ω
47 k
Ω
2.2 k
Ω
VBAT
Figure 18: Reference Design for NETLIGHT
“*” means under development.
NOTE
