SI5345-44-42 Datasheet, PDF (25/62 Pages) Silicon Laboratories – 10-CHANNEL

4. Detailed Block Diagrams
IN_SEL[1:0]
IN0
IN0
IN1
IN1
IN2
IN2
IN3/FB_IN
IN3/FB_IN
48-54MHz XTAL
or REFCLK
3
XA
XB
Si5345
OSC
÷
P_0n
P_0d
÷
P_1n
P_1d
÷
P_2n
P_2d
÷
P_3n
P_3d
DSPLL
PD LPF
Optional
External
Feedback
÷
M_n
M_d
÷PREF
Si5345/44/42
Multi
Synth
÷
N_0n
N_0d
t₀
Multi
Synth
÷
N_1n
N_1d
t₁
Multi
Synth
÷
N_2n
N_2d
t₂
Multi
Synth
÷
N_3n
N_3d
t₃
Multi
Synth
÷
N_4n
N_4d
t₄
I2C_SEL
SDA/SDIO
A1/SDO
SCLK
A0/CS
INTR
LOL
SPI/
I²C
NVM
Status
Monitors
÷R₀
÷R₁
÷R₂
÷R₃
÷R₄
÷R₅
÷R₆
÷R₇
÷R₈
÷R₉
VDDO0
OUT0
OUT0
VDDO1
OUT1
OUT1
VDDO2
OUT2
OUT2
VDDO3
OUT3
OUT3
VDDO4
OUT4
OUT4
VDDO5
OUT5
OUT5
VDDO6
OUT6
OUT6
VDDO7
OUT7
OUT7
VDDO8
OUT8
OUT8
VDDO9
OUT9
OUT9
Figure 8. Si5345 Block Diagram
Rev. 1.0
25