
Si570/Si571
4
Rev. 0.31
1. Detailed Block Diagrams
Figure 1. Si570 Detailed Block Diagram
Figure 2. Si571 Detailed Block Diagram
Frequency
Control
Interface
NVM
÷HS_DIV
÷N1
+
DCO
RFREQ
CLKOUT+
CLKOUT–
VDD
GND
fXTAL
fosc
M
SDA
OE
SCL
RAM
Frequency
Control
Interface
NVM
÷HS_DIV
÷N1
+
DCO
ADC
RFREQ
VCADC
VC
CLKOUT+
CLKOUT–
VDD
GND
fXTAL
fosc
M
SDA
OE
SCL
RAM