UG335: Si5395 Evaluation Board User's
Guide
The Si5395 EVB is used for evaluating the Si5395 Any-Frequency, Any-Output, Jitter-
Attenuating Clock Multiplier. There are two different EVBs for the Si5395. There is a
Grade A and a Grade P board. This user guide is intended for both versions of the
Si5395 EVBS. The device grade and revision is distinguished by a white 1 inch x 0.187
inch label installed in the lower left hand corner of the board. In the example below, the
label "SI5395A-A-EB" indicates the evaluation board has been assembled with an
Si5395 device, Grade A, Revision A, installed. (For ordering purposes only, the terms
“EB” and “EVB” refer to the board and the kit, respectively. For the purpose of this docu-
ment, the terms are synonymous in context.)
KEY FEATURES
• Powered from USB port or external power
supply
• Onboard 48 MHz XTAL or Reference SMA
Inputs allow holdover mode of operation on
the Si5395
• ClockBuilder Pro
®
(CBPro) GUI
programmable VDD supply allows device
to operate from 3.3, 2.5, or 1.8 V
• CBPro GUI programmable VDDO supplies
allow each of the 10 outputs to have its
own power supply voltage selectable from
3.3, 2.5, or 1.8 V
• CBPro GUI-controlled voltage, current, and
power measurements of VDD and all
VDDO supplies
• Status LEDs for power supplies and
control/status signals of Si5395
• SMA connectors for input clocks, output
clocks, and optional external timing
reference clock
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UG335: Si5395 Evaluation Board User's Guide
Functional Block Diagram
1. Functional Block Diagram
Below is a functional block diagram of the Si5395 EVB. This evaluation board can be connected to a PC via the main USB connector
for programming, control, and monitoring. See
3. Quick Start
or
10.3 Overview of ClockBuilder Pro Applications
for more information.
Main USB
Connector
Aux USB
Connector
Ext +5V
Connector
Power only
Power only
+5V_USB
+5V_Aux
+5V_Ext
VDDMCU
I2C/SPI Bus
Power Supply
VDD_Core
VDDO_0A
VDDO_0
VDDO_1
VDDO_2
VDDO_3
VDDO_4
VDDO_5
VDDO_6
VDDO_7
VDDO_8
VDDO_9
VDDO_9A
VDDO_0A
VDDO_0
VDDO_1
VDDO_2
VDDO_3
VDDO_4
VDDO_5
VDDO_6
VDDO_7
VDDO_8
VDDO_9
VDDO_9A
VDD_3.3
VDD_3.3
VDD_Core
I2C/SPI Bus
CLKOUT_0A
CLKOUT_0AB
CLKOUT_0
CLKOUT_0B
CLKOUT_1
CLKOUT_1B
CLKOUT_2
CLKOUT_2B
CLKOUT_3
CLKOUT_3B
Output
Termination
Output
Termination
Output
Termination
Output
Termination
Output
Termination
Output
Termination
Output
Termination
Output
Termination
Output
Termination
Output
Termination
Output
Termination
Output
Termination
C8051F380
MCU
+
Peripherals
Control/
Status
INTR
Alarm_Status
48 MHz
XTAL
Input Clock 0
Input Clock 1
Input Clock 2
Input Clock 3
XA
XB
CLKIN_0
CLKIN_0B
CLKIN_1
CLKIN_1B
CLKIN_2
CLKIN_2B
CLKIN_3/FB_IN
CLKIN_3/FB_INB
{
{
{
{
Si5395
CLKOUT_4
CLKOUT_4B
CLKOUT_5
CLKOUT_5B
CLKOUT_6
CLKOUT_6B
CLKOUT_7
CLKOUT_7B
CLKOUT_8
CLKOUT_8B
CLKOUT_9
CLKOUT_9B
CLKOUT_9A
CLKOUT_9AB
Input
Termination
Input
Termination
Input
Termination
Input
Termination
}
}
}
}
}
}
}
}
}
}
}
}
Output Clock 0A
Output Clock 0
Output Clock 1
Output Clock 2
Output Clock 3
Output Clock 4
Output Clock 5
Output Clock 6
Output Clock 7
Output Clock 8
Output Clock 9
Output Clock 9A
Figure 1.1. Si5395 EB Functional Block Diagram
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UG335: Si5395 Evaluation Board User's Guide
Si5395 EVB Support Documentation and ClockBuilderPro Software
2. Si5395 EVB Support Documentation and ClockBuilderPro Software
All Si5395 EVB schematics, BOMs, User’s Guides, and software can be found online at:
http://www.silabs.com/products/clocksoscilla-
tors/pages/si539x-evb.aspx.
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UG335: Si5395 Evaluation Board User's Guide
Quick Start
3. Quick Start
1. Install the ClockBuilder Pro desktop software from
http://www.silabs.com/CBPro.
2. Connect a USB cable from Si5395 EVB to the PC where the software was installed.
3. Confirm jumpers are installed as shown in
Table 4.1 Si5395 EVB Jumper Defaults
1
on page 5.
4. Launch the ClockBuilder Pro Software.
5. You can use ClockBuilder Pro to create, download, and run a frequency plan on the Si5395 EVB.
6. For the Si5395 data sheet, go to
http://www.silabs.com/timing.
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UG335: Si5395 Evaluation Board User's Guide
Jumper Defaults
4. Jumper Defaults
Table 4.1. Si5395 EVB Jumper Defaults
1
I= Installed
0 = Open
O
I
O
I
I
I
I
O
O
I
O
I
1 to 2
1 to 2
O
O
O
O
O
O
I = Installed
0 = Open
O
O
O
O
O
O
O
O
O
O
O
O
O
O
All Open
O
O
O
All 5 installed
Location
JP1
JP2
JP3
JP4
JP5
JP6
JP7
JP8
JP9
JP10
JP13
JP14
JP15
JP16
JP17
JP18
JP19
JP20
JP21
JP22
Type
2-pin
2-pin
2-pin
2-pin
2-pin
2-pin
2-pin
2-pin
2-pin
2-pin
2-pin
2-pin
3-pin
3-pin
2-pin
2-pin
2-pin
2-pin
2-pin
2-pin
Location
JP23
JP24
JP25
JP26
JP27
JP28
JP29
JP30
JP31
JP32
JP33
JP34
JP35
JP36
JP38
JP39
JP40
JP41
J36
Type
2-pin
2-pin
2-pin
2-pin
2-pin
2-pin
2-pin
2-pin
2-pin
2-pin
2-pin
2-pin
2-pin
2-pin
3-pin
2-pin
2-pin
2-pin
5 x 2 Hdr
Note:
1. Refer to the Si5395 EVB schematics for the functionality associated with each jumper.
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