User`s guide

Si5365/66-EVB
Si5367/68-EVB
Si5369-EVB
2 Rev. 0.5
2. Applications
The Si536x Any-Frequency Precision Clocks have a comprehensive feature set, including any-frequency
synthesis, multiple clock inputs, multiple clock outputs, alarm and status outputs, hitless switching between input
clocks, programmable output clock signal format (LVPECL, LVDS, CML, CMOS), output phase adjustment
between output clocks, and output phase adjustment between all output clocks and the selected reference input
clock (phase increment/decrement). For more details, consult the Silicon Laboratories timing products website at
www.silabs.com/timing.
Both evaluation boards (EVBs) have a Silicon Laboratories MCU (C8051F340) that supports USB communications
with a PC host. For the pin controlled parts (Si5365 and Si5366), the pin settings of the devices are determined by
the MCU and the PC resident software that is provided with the EVB. For the MCU controlled parts (Si5367,
Si5368, and Si5369), the devices are controlled and monitored through the serial port (either SPI or I
2
C). A CPLD
sits between the MCU and the Precision Clock device that performs voltage level translation and stores the pin
configuration data for the pin controlled devices. Jumper plugs are provided so that the user can bypass the MCU/
CPLD to manually control the pin controlled devices. Ribbon headers and SMA connectors are included so that
external clock in, clock out and status pins can be easily accessed by the user. For the MCU controlled devices
(Si5367, Si5368, and Si5369)), the user also has the option of bypassing the MCU and controlling the parts from an
external serial device. On-board termination is included so that the user can evaluate either single-ended or
differential as well as ac or dc coupled clock inputs and outputs. A separate DUT (device under test) power supply
connector is included so that the Precision Clocks can be run at either 1.8, 2.5, or 3.3 V, while the USB MCU
remains at 3.3 V. LEDs are provided for convenient monitoring of key status signals.
For more detailed information about these devices, refer to the Any-Frequency Precision Clock Family Reference
Manual.
Table 1. Features by Part Number
Device PN # Clock Inputs # Clock Outputs Control Input Freq (MHz) Output Freq (MHz) Jitter Generation (12 kHz–20 MHz) Prog. Loop BW Clock Mult. Hitless Switching Alarms Package
Precision Clock Multipliers
Si5365 4 5 Pin 15 to
707
19 to
1050
0.6 ps
rms typ
30 kHz–1.3 MHz Y N LOS, FOS 14 x 14
100-TQFP
Si5367 4 5 I
2
C or
SPI
10 to
710
10 to
1400
0.6 ps
rms typ
30 kHz–1.3 MHz Y N LOS, FOS 14 x 14
100-TQFP
Any-Frequency Precision Clock Multipliers with Jitter Attenuation
Si5366 4 5 Pin .008 to
707
.008 to
1050
0.3 ps
rms typ
60 Hz–8.4 kHz Y Y LOL, LOS,
FOS
14 x 14
100-TQFP
Si5368 4 5 I
2
C or
SPI
.002 to
710
.002 to
1400
0.3 ps
rms typ
60 Hz–8.4 kHz Y Y LOL, LOS,
FOS
14 x 14
100-TQFP
Si5369 4 5 I
2
C or
SPI
.002 to
710
.002 to
1400
0.3 ps
rms typ
4 Hz–525 Hz Y Y LOL, LOS,
FOS
14 x 14
100-TQFP