unicore UM980 - Block Diagram

5
I
2
C
*
× 1
SPI
*
× 1
Slave
CAN
*
× 1
Shared with UART3
* I
2
C, SPI, CAN: reserved interfaces, not supported currently
1.3 Block Diagram
RF in
SAW
Filter
RESET_N
NebulasIV
GNSS
RF
GNSS
BB
LNA
CLOCK
TCXO
Interface
PMU
UM980
Interface
UART1/2/3
I
2
C
SPIS
PVT/RTK/ERR
EVENT
PPS
Figure 1-2 UM980 Block Diagram
 RF Part
The receiver gets filtered and enhanced GNSS signal from the antenna via a coaxial
cable. The RF part converts the RF input signals into the IF signals, and converts IF
analog signals into digital signals required for NebulasIV
TM
chip (UC9810).
 NebulasIV
TM
SoC (UC9810)
NebulasIV (UC9810) is Unicore’s new generation high precision GNSS SoC with 22 nm
low power design, supporting all constellations all frequencies and 1408 super
channels. It integrates a dual-core CPU, a high speed floating point processor and an
RTK co-processor, which can fulfill the high precision baseband processing and RTK
positioning independently.