User's Manual

SPSGRFC
Rev 0.1 P a g e | 3
3 Block Diagram
Figure 1 – Block Diagram
UFL RF connector
for external antenna
Battery or External Supply
SPI LINE
M.C.U. clock
SPSGRF-xxx Module - 2016
SUPPLY FILTER
Bead Ferrite
RF
BALUN
+ Filter
50 MHz
Crystal
868 MHz or 915 MHz
or 433 MHz
EXTERNAL ANTENNA
I/O
SPIRIT1
DEVICE
RF
TUNING
NETWORK
Programmable
I/O
Host Controller
interface