SI5325C-C-GM Datasheet, PDF (16/178 Pages) Silicon Laboratories – ANY-FREQUENCY PRECISION CLOCKS

Si53xx-RM
3. Any-Frequency Clock Family Members
3.1. Si5316
The Si5316 is a low jitter, precision jitter attenuator for high-speed communication systems, including OC-48, OC-
192, 10G Ethernet, and 10G Fibre Channel. The Si5316 accepts dual clock inputs in the 19, 38, 77, 155, 311, or
622 MHz frequency range and generates a jitter-attenuated clock output at the same frequency. Within each of
these clock ranges, the device can be tuned approximately 14% higher than nominal SONET/SDH frequencies, up
to a maximum of 710 MHz in the 622 MHz range. The DSPLL loop bandwidth is digitally selectable, providing jitter
performance optimization at the application level. Operating from a single 1.8, 2.5, or 3.3 V supply, the Si5316 is
ideal for providing jitter attenuation in high performance timing applications. See "5. Pin Control Parts (Si5316,
Si5322, Si5323, Si5365, Si5366)" on page 37 for a complete description.
RATE[1:0]
XB
Xtal or Refclock
XA
CK1DIV
CKIN_1+
2
CKIN_1–
CKIN_2+
2
CKIN_2–
CK2DIV
C1B
C2B
f3_1
÷ N31
f3_2
÷ N32
0
1
f3
Signal
Detect
DSPLL^®
0
fOSC
1
SFOUT[1:0]
2
CKOUT+
CKOUT–
DBL_BY
RST
CS
BWSEL[1:0]
FRQSEL[1:0]
LOL
Control
Bandwidth
Control
Frequency
Control
VDD
GND
Figure 1. Si5316 Any-Frequency Jitter Attenuator Block Diagram
16
Rev. 1.2