Si 5 3 5 6 - EVB
Si5356 E VALU AT IO N B OARD U SER ’ S G UIDE
Description
EVB Features
The Si5356 evaluation board (EVB) is used for
evaluating the Si5356 I2C programmable, any
frequency 1–200 MHz, quad frequency 8-output clock
generator.
Fully powered from a single USB port
On-board 25 MHz XTAL allows standalone
asynchronous operation
GUI programmable VDD supply allows device to
operate from 3.3 V, 2.5 V, or 1.8 V (core)
GUI programmable VDDO supplies allows each of
the four banks of outputs to have its own supply
voltage selectable from 3.3 V, 2.5 V, and 1.8 V
GUI controlled voltage, current, and power
measurements of VDD and all four VDDO supplies.
Voltage supply jumpers allows easy access for use
of external supplies or current measurements.
Figure 1. Si5356 Evaluation Board
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1. Quick Start
Perform the following steps to get started quickly:
1. Install the latest Skyworks ClockBuilder Pro (CBPro) software.
2. Connect a USB cable from the EVB to the PC where the software was installed.
3. Leave the jumpers as installed from the factory and launch the newly installed ClockBuilder Pro.
4. Select “Open Default Plan” under the Evaluation Board Detected heading, and click “Yes” when prompted to
“Write Design to EVB”. This will write a preset configuration to the Si5356 device on the evaluation board. From
this point on, the Si5356 can be configured through the CBPro Configuration Wizard, and the EVB can be
controlled through the CBPro EVB GUI.
Figure 2. Select Open Default Plan
2
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2. Functional Description
A function block diagram of the EVB is shown in Figure 3. The MCU performs the USB to I2C conversion, controls
the voltage regulators, monitors the INTR pin, and controls the three status LEDs. There are five programmable
voltage regulators (VDD, VDDOA, VDDOB, VDDOC, VDDOD), which supply power to the Si5356 device. VDD and
VDDO jumpers allow the option of powering the device from external supplies or as a convenient point for
measuring current. I2C jumpers allow disconnecting the Si5356 from the I2C bus to allow external control from
another I2C master.
The Si5356 EVB is shipped with an on-board 25 MHz XTAL to allow stand-alone asynchronous operation. The
Si5356 can be synchronized to an external reference using the CLKIN input and selecting the external reference
using the ClockBuilder Pro software.
To
I2C
Bus
VReg
To
I2C
Bus
+5V
VDD
Jumpers
VReg
VReg
VReg
VReg
+5V
VDDO
Jumpers
VDD
XA
VDDOA
XB
CLK0
XTAL
CLK1
CLKIN
VDDOB
I2C_LSB
J7
6 5
CLK2
J7
CLK3
SSC_DIS
4 3
Si5356
OEB
J7
2 1
VDDOC
SCL
SDA
SCL
CLK4
SDA
CLK5
I2C
Jumpers
VDDOD
I2C Bus
CLK6
INTR
CLK7
VCC
+5V
MCU
USB
Connector
Status
LEDs
Reset
Switch
Figure 3. EVB Functional Block Diagram
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2.1. Status LEDS
There are three status LEDs on the EVB:
RDY (Green) indicates that the EVB is operating as normal. This LED should always be on.
BUSY (Green) lights when there is active communication between the PC, the MCU, and the Si5356.
INTR (Red) indicates the MCU has detected that the interrupt pin of the Si5356 device is enabled. The most
probable cause for an interrupt is because the Si5356 has lost its input signal or the PLL has lost lock. The
“Status Registers” tab of the EVB GUI will identify the event that caused the interrupt to happen.
2.2. Inputs
The Si5356 EVB provides two reference options - using the on-board XTAL or an external reference.
Note: Si5356-EVB Rev 1.0 does not support synchronous operation using the CLKIN input. This feature will be supported in
future revisions.
2.2.1. External Input reference
An SMA connector (CLKIN) is provided to receive an external single-ended CMOS signal. This input is dc-coupled
to the device. The signal should have a minimum amount of dc bias to ensure that it never swings below ground
level.
2.2.2. Onboard XTAL
The onboard 25 MHz allows the Si5356 EVB to generate asynchronous clocks. To use this option, select the XTAL
input from the Si5356 “ClockBuilder Pro” software.
2.3. Outputs (CLK0-CLK7)
Each of the eight output clocks can be accessed using SMA connectors. The outputs are dc-coupled (no in-line dc
blocking capacitors between the output pin and the SMA connector).
2.4. Control Pins
Header J7 located on the backside of the Si5356 EVB allows setting three Si5356 control pins: SSC_DIS,
I2C_LSB, and OEB.
2.4.1. SSC_DIS
This pin allows disabling of the spread spectrum feature on the output clocks. Spread spectrum is disabled when
the jumper is installed.
2.4.2. I2C_LSB
This pin is the least significant bit of the Si5356 I2C address allowing up to two Si5356 devices to occupy the same
I2C bus. I2C address of the Si5356 = 0x70 when the jumper is installed. I2C address of the Si5356 = 0x71 when the
jumper is not installed.
2.4.3. OEB
This pin allows disabling all output clocks. All outputs are enabled when the jumper is installed.
2.5. Voltage Regulators
The Si5356 EVB has five built-in programmable voltage regulators to allow setting of the VDD supply (to 3.3 V,
2.5 V, and 1.8 V) and the four VDDO supplies (to 3.3 V, 2.5 V, and 1.8 V). The voltage level on each of these
supplies can be set independently through the Regulators tab in the EVB GUI.
2.6. Reset Switch
A reset switch is provided to reset communication between the PC and Si5356 EVB.
4
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CLKIN
J4
SMA
R7
0
5
3
1
HEADER 2x3
6
4
2
J7
C54
0.01uF
25MHz
GND
R15
10K
R20
1K
R16
2.15K
R21
1K
1
2
I2C_LSB
SSC_DIS
OEB
R17
2.15K
GND
XTAL2 XTAL1
VDD +3.3V
4
3
U2
C55
0.01uF
RED
VDD
C5
0.1uF
C4
0.1uF
19
12
8
6
5
3
4
2
1
C3
0.1uF
SDA
SCL
INTR
OEB
SSC_DIS
I2C_LSB
CLKIN
XB
XA
Si5356
U1
CLK7
CLK6
CLK5
CLK4
CLK3
CLK2
CLK1
CLK0
C6
0.1uF
9
10
13
14
17
18
21
22
VDDOD
C2
0.1uF
R18
R13
R12
R11
R9
R8
R6
R5
0
0
0
0
0
0
0
0
0
R23
0
R22
0
R19
0
R14
0
R10
0
R4
0
R3
0
R2
SMA
J10
SMA
J9
SMA
J8
SMA
J6
CLK3
CLK2
CLK1
CLK0
CLK7
CLK6
CLK5
CLK4
SMA
J5
SMA
J3
SMA
J2
SMA
J1
These traces need to be 50 ohms and be of equal length.
Place close to output pins
Figure 4. Si5356-EVB Schematic
SDA_5338
SCL_5338
INTRPT
TP1
VDDOA
7
VDD
R1
4.99K
15
VDDOC
INTR
24
VDD
VDDOC
11
VDDOD
C1
0.1uF
GND
20
23
16
VDDOA
25
VDDOB
EPAD
+3.3V
VDDOB
Si5356
3. Si5356-EVB Schematics
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+5V_USB
412
C16
S8
S7
S6
S5
S4
S3
S2
S1
ADG728
9
10
11
12
7
6
5
U6
+5V_USB
4
R27
1K
C10
R28
1K
+5V_USB
0.1uF
D
RESETB
SDA
SCL
A1
A0
+5V_USB
2
3
1
15
16
8
D2
MMBD3004S-7-F
R29
2K
+3.3V
R26
1K
R33
2K
+3.3V
0.1uF
VDDOA
GND
RED
TP4
VDDOB
R47
VDDOD
VDD
+3.3V
1
2
3
4
10uF
C14
+
+5V_USB
VDDOC
J12
USB Type B
SCL_5338
SDA_5338
SDA_5V
SCL_5V
6
5
EN
0.1uF
C17
3
1
3
1
4
3
2
1
VDD_pin
VDDOB_pin
VDDOC_pin
C7
4.7uF
S8
S7
S6
S5
S4
S3
S2
S1
U7
R40
D
RESETB
SDA
SCL
A1
2
3
1
15
16
8
C15
1uF
1K
SCL
RED
TP2
1
SDA
RED
TP3
13
14
8
9
C12
P0.7
P0.6
P0.5
P0.4
P0.3
P0.2
P0.1
P0.0
0.1uF
1
3
5
7
9
C19
0.1uF
1
3
5
7
9
R45
2
4
6
8
10
SDA_5V
SCL_5V
J13
2
4
6
8
10
C9
U5
1.02K
0.1uF
R41
C20
1uF
P4.0
P4.1
P4.2
P4.3
P4.4
P4.5
P4.6
P4.7
P3.0
P3.1
P3.2
P3.3
P3.4
P3.5
P3.6
P3.7
P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P2.7
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
C13
0.1uF
R46
1.02K
1K
C8051F340
RST/C2CK
C2D
D+
D-
R25
1.02K
R24
1.02K
+3.3V +5V_USB
5X2 Shrouded Header
R34
0
47
48
1
2
3
4
5
6
C8
1uF
+2.5V Ref
Address is 1001101
+3.3V
2.5V
VOUT
INTRPT
VIN
U3
A0
+5V_USB
3
GND
2
Figure 5. Si5356-EVB MCU Schematic
ADG728
9
10
11
12
7
6
5
4
SW PUSHBUTTON
S1
R39
1K
+3.3V
MCU
R31
2K
+3.3V
VDDOA_pin
R30
2K
+3.3V
0.1uF
C11
+3.3V
VDDOD_pin
D3
MMBD3004S-7-F
HEADER 2x2
4
2
J11
PCA9517D
GND
SDAA
SCLA
VCCA
U4
0.9V to 5.5V
Address is 1001100
SDA_5V
SCL_5V
C18
0.1uF
+5V_USB
4
2
SDAB
SCLB
VCCB
I2C_5V_EN
5
6
7
8
2.7V to 5.5V
+5V_USB
+3.3V
VDD
10
VDD
+5V_USB +5V_USB
VDD
13
GND
14
13
GND
14
REGIN
VBUS
11
12
GND
7
6
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Rev. 0.3 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 3, 2021
22
21
20
19
18
17
16
15
30
29
28
27
26
25
24
23
38
37
36
35
34
33
32
31
46
45
44
43
42
41
40
39
10uF
C21
+
I2C_5V_EN
GREEND5
GREEND4
RED D1
R44
R43
R42
R35
0
+3.3V
220
220
1K
RDY
BUSY
INTR
+3.3V
R37
0
+3.3V
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C47
1uF
C34
1uF
+5V_USB
+5V_USB
9
+5V_USB
0.01uF
C37
R48
10
9
6
5
4
3
2
1
VDD_int_en
8
7
5
4
3
2
SS
10
GND
EPAD
RSTB
OUT
OUT
OUT
9
6
5
4
3
2
1
13
12
10
SCL_5V
+5V_USB
C50
0.01uF
R54
11
17
6
15
14
13
12
C45
1uF
1
CSB/AD0
CLK/SCL
2
CSB/AD0
CLK/SCL
A2
B2
W4
A4
B4
17
14
15
16
1
SS
9
16
MAX8869
11
10
R56
C38
0.01uF
R49
10
C26
1uF
1
2
C39
1uF
JUMPER
J15
+5V_USB
10uF
C27
+
VDDOB
RED
TP6
VDDO2_int_en
8
7
5
4
3
2
VDDOB
SS
9
16
10K
GND
RED
TP11
+5V_USB
GND
RED
TP12
GND
RED
TP13
GND
RED
TP14
+5V_USB
+5V_USB
C52
1uF
+5V_USB
R55
10K
8
7
5
4
3
2
9
SS
16
10
GND
EPAD
RSTB
OUT
OUT
OUT
R58
15.4K
11
SET
MAX8869
17
6
15
14
13
12
CSB/AD0
CLK/SCL
A2
B2
W4
A4
B4
W2
23
24
VDDO3_int_en
VDDO2_int_en
14
15
17
16
19
20
21
22
+5V_USB
VDDO3_int_en
C36
1uF
VDDOC
C53
0.01uF
47.5K
R57
10uF
C48
+
+3.3V
RED
TP10
C49
1uF
Address is 0101101
RESB/AD1
SHDN_B
SDO/O1
NC/O2
+5V_USB
10uF
C30
+
VDDOC
RED
TP7
AD5263
SDI/SDA
DIS
W3
A3
B3
W1
A1
B1
2
JUMPER
J16
C43
0.1uF
1
U13
NC NC NC
OUT
SHDNB
IN
IN
IN
IN
13
12
9
6
5
4
3
2
1
11
U15 1
10
+5V_USB
C42
0.01uF
R51
C29
1uF
SCL_5V
11
17
6
15
14
13
12
C28
1uF
VDDOC_pin
SDA_5V
10
GND
EPAD
RSTB
OUT
OUT
SET
MAX8869
OUT
NC NC NC
OUT
SHDNB
IN
IN
IN
IN
U11 1
Voltage
Regulators
R52
10K
+5V_USB
17
6
15
14
13
12
C23
1uF
VDDOB_pin
Figure 6. Si5356-EVB Voltage Regulators Schematic
SET
GND
EPAD
RSTB
OUT
OUT
OUT
NC NC NC
OUT
SHDNB
IN
IN
IN
IN
Address is 0101110
RESB/AD1
SHDN_B
SDO/O1
19
20
21
22
23
24
8
7
5
4
3
2
U9
VDD_int_en
VDDO0_int_en
VDDO1_int_en
VDD
W2
14
15
16
17
19
20
21
22
23
24
NC/O2
+5V_USB
10uF
C46
+
VDD
RED
TP9
AD5263
SDI/SDA
DIS
W3
A3
B3
W1
A1
B1
U16
SHDN_B
SDO/O1
NC/O2
W4
A4
B4
RESB/AD1
C51
0.1uF
JUMPER
J18
A2
B2
+5V_USB
VDDO1_int_en
C35
1uF
VDDOA
W2
+5V_USB
10uF
C25
+
AD5263
SDI/SDA
DIS
W3
A3
B3
W1
A1
B1
U12
C40
0.1uF
JUMPER
SDA_5V
11
SET
MAX8869
SHDNB
IN
IN
16
NC NC NC
OUT
U14 1
IN
IN
C44
1uF
VDD_pin
Address is 0101100
13
12
11
17
6
15
14
13
SCL_5V
10
GND
EPAD
RSTB
OUT
OUT
OUT
SET
MAX8869
12
C24
1uF
11
SS
16
NC NC NC
OUT
SHDNB
IN
IN
IN
IN
9
SDA_5V
VDDO0_int_en
8
7
5
4
3
2
U8 1
2
VDDOA
RED
TP5
VSS
1
7
VDD
GND
8
18
C22
1uF
J14
VLOGIC
10
VLOGIC
VSS
10
VSS
VDDOA_pin
10
VLOGIC
7
VDD
GND
8
18
7
VDD
GND
8
18
+3.3V
MAX8869
SS
16
11
10
R53
10K
SET
EPAD
RSTB
OUT
OUT
OUT
GND
SHDNB
IN
IN
IN
9
NC NC NC
OUT
U10 1
IN
+5V_USB
8
7
5
4
3
2
17
6
15
14
13
12
C31
1uF
10
C32
1uF
C41
0.01uF
R50
VDDOD_pin
1
2
JUMPER
J17
10uF
C33
+
VDDOD
VDDOD
RED
TP8
4. Si5356-EVB Bill of Materials
Table 1. Si5356-EVB Bill of Materials
Item
Qty
Reference
Value
Voltage
Tol
PCB Footprint
Mfr
Mfr Part Number
1
18
C1,C2,C3,C4,
C5,C6,C9,C10,
C11,C12,C13,
C16,C17,C18,
C19,C40,C43,
C51
0.1 µF
10 V
±10%
C0402
Venkel
C0402X7R100-104K
2
1
C7
4.7 µF
10 V
±20%
C1206
Venkel
C1206X7R100-475M
3
3
C8,C15,C20
1 µF
25 V
±10%
C1206
Venkel
C1206X7R250-105K
4
7
C14,C25,C27,
C30,C33,C46,
C48
10 µF
25 V
±20%
6032_EIAC
Kemet
B45196H5106M309
5
17
C22,C23,C24,
C26,C28,C29,
C31,C32,C34,
C35,C36,C39,
C44,C45,C47,
C49,C52
1 µF
10 V
±10%
C0603
Venkel
C0603X7R100-105K
6
6
C37,C38,C41,
C42,C50,C53
0.01 µF
10 V
±20%
C0402
Venkel
C0402X7R100-103M
7
1
D1
RED
LED-S-GW-KA
Panasonic
LN1271RAL
8
2
D2,D3
MMBD3004S-7-F
SOT23-AKC
Diodes Inc.
MMBD3004S-7-F
9
2
D4,D5
GREEN
LED-S-GW-AK
Panasonic
LN1371G
10
8
J1,J2,J3,J5,J6,
J8,J9,J10
SMA
SMA-EDGE-5
Johnson
Components
142-0701-801
11
1
J7
HEADER 2x3
CONN2X3
Samtec
TSW-103-07-T-D
12
1
J11
HEADER 2x2
CONN2X2
Samtec
TSW-102-07-T-D
13
1
J12
USB Type B
CONN-USB-B
Tyco
292304-1
14
1
J13
5X2 Shrouded
Header
CONN2X5-4W
Tyco
5103309-1
15
5
J14,J15,J16,
J17,J18
JUMPER
CONN-1X2
Samtec
TSW-102-07-T-S
16
1
R1
4.99 k
R0402
Venkel
CR0402-16W-4991F
17
19
R2,R3,R4,R5,
R6,R8,R9,R10,
R11,R12,R13,
R14,R18,R19,
R22,R23,R34,
R35,R37
0
R0402
Venkel
CR0402-16W-000
8
300 V
±1%
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
Rev. 0.3 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 3, 2021
Table 1. Si5356-EVB Bill of Materials (Continued)
Item
Qty
Reference
Value
18
1
R15
19
2
20
Voltage
Tol
PCB Footprint
Mfr
Mfr Part Number
10 k
±1%
R0603
Venkel
CR0603-10W-1002F
R16,R17
2.21 k
±1%
R0603
Venkel
CR0603-10W-2211F
2
R20,R21
1 k
±1%
R0603
Venkel
CR0603-10W-1001F
21
4
R24,R25,R45,
R46
1.02 k
±0.1
%
R0402
Venkel
TFCR0402-16W-E-1021B
22
7
R26,R27,R28,
R39,R40,R41,
R42
1 k
±5%
R0402
Venkel
CR0402-16W-102J
23
4
R29,R30,R31,
R33
2 k
±1%
R0402
Venkel
CR0402-16W-2001F
24
2
R43,R44
220
±5%
R0402
Venkel
CR0402-16W-221J
25
1
R47
412
±1%
R0402
Venkel
CR0402-16W-4120F
26
5
R48,R49,R50,
R51,R54
10
±0.5
%
R2512
Venkel
CR2512-2W-10R0D
27
4
R52,R53,R55,
R56
10 k
±5%
R0402
Venkel
CR0402-16W-103J
28
1
R57
47.5 k
±1%
R0603
Venkel
CR0603-10W-4752F
29
1
R58
15.4 k
±1%
R0603
Venkel
CR0603-10W-1542F
30
1
S1
SW
PUSHBUTTON
SW-PB-MOM
Mountain
Switch
101-0161-EV
31
1
TP4
Black
TESTPOINT
Kobiconn
151-203-RC
32
1
U1
Si5356
QFN24N4X4P0
.5
Skyworks
Si5356-A-A-GM
33
1
U2
25 MHz
XTAL4N3.2X2.
5-FA238
Epson
FA-238 25.0000MB
34
1
U3
2.5 V
SOT-23
Analog
Devices
AD1582BRT
35
1
U4
PCA9517D
SO8N6.0P1.27
NXP
PCA9517D
36
1
U5
C8051F340
5.5 V
QFP48N9X9P0
.5
Skyworks
C8051F340-GQ
37
2
U6,U7
ADG728
2.7–
5.5 V
TSSOP16N6.4
P0.65
Analog
Devices
ADG728BRUZ
38
6
U8,U9,U10,
U11,U14,U15
MAX8869
TSSOP16N6.5
P0.65E
Maxim
MAX8869EUE50
39
3
U12,U13,U16
AD5263
TSSOP24N6.4
P0.65
Analog
Devices
AD5263BRUZ20
12 Vdc
3.3 V
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
9
Rev. 0.3 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 3, 2021
Table 1. Si5356-EVB Bill of Materials (Continued)
Item
Qty
40
Reference
Value
Voltage
Mfr
Mfr Part Number
4
SPC
Technology
2397
41
4
Richco
NSS-4-4-01
42
10
Jumpers
Sullins
SPC02SYAN
43
1
C21
10 µF
6032_EIAC
Kemet
B45196H5106M309
44
1
J4
SMA
SMA-EDGE-5
Johnson
Components
142-0701-801
45
1
R7
0
R0402
Venkel
CR0402-16W-000
46
13
TP1,TP2,TP3,
TP5,TP6,TP7,
TP8,TP9,TP10,
TP11,TP12,
TP13,TP14
RED
TESTPOINT
Kobiconn
151-207-RC
25 V
Tol
±20%
PCB Footprint
10
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
Rev. 0.3 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 3, 2021
REVISION HISTORY
Revision 0.2 to Revision 0.3
Changed “ClockBuilder Desktop” to “ClockBuilder
Pro” throughout.
Removed ClockBuilder Desktop Software
Installation section.
Revision 0.1 to Revision 0.2
Changed “Any Rate Clock Generator” to
“ClockBuilder Desktop” throughout.
Changed “MultiSynth Clock Programmer” to
“ClockBuilder Desktop” throughout.
Updated Figure 4 on page 6.
Removed “Uninstaller Option” figure.
Updated Figure 9 on page 9.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
11
Rev. 0.3 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • December 3, 2021
ClockBuilder Pro
Customize Skyworks clock generators,
jitter attenuators and network
synchronizers with a single tool. With
CBPro you can control evaluation
boards, access documentation, request
a custom part number, export for
in-system programming and more!
www.skyworksinc.com/CBPro
Portfolio
SW/HW
Quality
Support & Resources
www.skyworksinc.com/ia/timing
www.skyworksinc.com/CBPro
www.skyworksinc.com/quality
www.skyworksinc.com/support
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