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Silicon Labs Si535x-B20QFN-EVB , Si535x-B20QFN-EVB: Si5350/51 20-QFN Evaluation Board User guide

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Rev. 0.4 3/20 Copyright © 2020 by Silicon Laboratories Si535x-B20QFN-EVB
Si535x-B20QFN-EVB
Si5350/51 EVALUATION BOARD USER’S GUIDE
Description
The Si535x-B20QFN-EVB is used for evaluating the
Si5350/51 any-frequency, 0.0025–200 MHz CMOS
clock generator + VCXO.
The pre-soldered 20-QFN device can be configured
using ClockBuilder Pro to emulate all available Si5350/
51 package options, including 10-MSOP, 16-QFN, and
20-QFN.
Features
ClockBuilder Pro configurable, allowing quick
frequency plan analysis
Fully-powered from a single USB port
Onboard 27 MHz crystal for asynchronous operation
SMA and test point hook for interfacing to an
external clock reference
Jumper-selectable VDD and VDDOx allows device
to operate at 1.8 (VDDO only), 2.5, or 3.3 V
Voltage supply jumpers provide easy access for use
with external supplies
Functional Block Diagram
Jumper Selectable Vreg
1.8 V (VDDO only) / 2.5 V / 3.3 V
CLK0
CLK1
VDDO0
VReg
VReg
VReg
Vreg*
CLK2
CLK3
VDDO1
CLK4
CLK5
VDDO2
CLK6
CLK7
VDDO3
Si5350/51
I2C
Vreg*
CLKIN
XTAL
I2C Bus
VDD
MCU
USB
Connector
Status
LEDs
Reset
Switch
V
C
Si535x-B20QFN-EVB
2 Rev. 0.4
1. Functional Block Diagram
Figures 1 and 2 highlight the main features of the EVB. The onboard MCU is responsible for programming the
Si535x timing IC, measuring the device's current consumption reported in the ClockBuilder™ Pro EVB GUI,
managing power, and controlling status LEDs. VDD and VDDO jumpers allow the option of choosing between 1.8
(VDDO only), 2.5, and 3.3 V or powering the device with external supplies (see Section “2. Jumpers” for details).
I
2
C jumpers allow the Si535x to be disconnected from the I
2
C bus, allowing external control from another I
2
C
master.
The Si5350 device on this board is a hybrid of the Si5350/51 A, B, and C variants. It can be configured to emulate
a 10-MSOP, 16-QFN, or 20-QFN device. It can run in stand-alone asynchronous mode (Si5350/51A) using the
onboard 27 MHz XTAL (Y1), or it can be synchronized to an external clock using the CLKIN SMA connector or test
points (Si5350/51C). It can also accept a V
C
input when in VCXO (Si5350/51B) mode.
Note: EVBs labelled "REV 1.1" or "REV 1.2" are populated with rev A devices.
Figure 1. EVB Features (Front)
Si535x-B20QFN-EVB
Rev. 0.4 3
Figure 2. EVB Features (Back)
5VExternal
Supply
USBMCU
Si535x-B20QFN-EVB
4 Rev. 0.4
2. Jumpers
The following jumpers are available on the evaluation board:
VDD—Connects the Si5350/51 pin to the VDD voltage regulator (normally installed).
VDD VOLT_SEL—Allows user to select a VDD voltage of 2.5 V or 3.3 V (default 3.3 V).
VDDOA—Connects the Si5350/51 pin to the VDDOA voltage regulator (normally installed).
VDDOA VOLT_SEL—Allows user to select a VDDOA voltage of 1.8 (jumper removed), 2.5, or 3.3 V
(default).
VDDOB—Connects the Si5350/51 pin to the VDDOB voltage regulator (normally installed).
VDDOB VOLT_SEL—Allows user to select a VDDOB voltage of 1.8 (jumper removed), 2.5, or 3.3 V
(default).
VDDOC—Connects the Si5350/51 pin to the VDDOC voltage regulator (normally installed).
VDDOC VOLT_SEL—Allows user to select a VDDOC voltage of 1.8 (jumper removed), 2.5, or 3.3 V
(default).
VDDOD—Connects the Si5350/51 pin to the VDDOD voltage regulator (normally installed).
VDDOD VOLT_SEL—Allows user to select a VDDOD voltage of 1.8 (jumper removed), 2.5, or 3.3 V
(default).
SCL—Connects the Si5350/51 SCL pin to the I
2
C bus from the MCU. Removing the jumper breaks the
connection to the MCU and allows the user to feed in an external I
2
C signal to the device.
SDA—Connects the Si5350/51 SDA pin to the I
2
C bus from the MCU. Removing the jumper breaks the
connection to the MCU and allows the user to feed in an external I
2
C signal to the device.
EXT POWER—Allows user to select between 5 V USB supply and 5 V external supply on J17. See
Figure 1 for jumper locations.
3. Status LEDs
There are three status LEDs on the evaluation board:
RDY (Green)—Indicates that the EVB is operating normally. This LED should always be on.
BUSY (Green)—Indicates that the on-board MCU is communicating with the device and/or the USB host.
INTR (Red)—Indicates device or EVB fault condition (also on when DUT hasn't been programmed).
4. Clock Inputs
The EVB can operate in asynchronous mode using the onboard 27 MHz crystal, synchronous mode using an
external CMOS clock source, or both modes. An SMA connector and test points are provided to interface an
external clock source to CLKIN. Additionally, in the Si5350/51B mode, V
C
input should be applied to either the V
C
test point or SMA connection.
5. Clock Outputs
Outputs can be measured using either SMA cables attached directly to a high-input impedance oscilloscope
(recommended) or with high impedance probes at the output clock test loops (TP53-TP60).
Clock voltage levels can be 1.8, 2.5, or 3.3 V depending on the VDDOx VOLT_SEL jumper selection.
Si535x-B20QFN-EVB
Rev. 0.4 5
6. Software Guide
The Si535x-B20QFN-EVB is fully compatible with ClockBuilder Pro. This software can be used to program the pre-
soldered hybrid Si5350/51 device to emulate any type of Si5350/51 part, including A/B/C variants, in 10-MSOP, 16-
QFN, or 20-QFN packages.
To program the device, just connect the Si535x-B20QFN-EVB to a computer running ClockBuilder Pro using the
provided USB Cable. With the ClockBuilder Pro software opened and the EVB connected, a "Si535x EVB" will
show up on the main ClockBuilder Pro Wizard page.
Figure 3. ClockBuilder Pro Wizard with the Si535x EVB Connected
From this page, either open a default EVB plan, open an existing Si535x A/B/C ClockBuilder Pro project file using
the Open Project button, or create a new Si535x A/B/C project file using the Create New Project button. Once a
project file is opened, it can be written to the EVB in the Design Dashboard. When a 10-MSOP or 16-QFN project
is written to the EVB, an additional GUI will pop-up to show which CLK outputs on the EVB apply to that package
type.
Once a configuration has been finalized, a project file can either be used to create a custom-orderable Si5350/51
part number, or the register file can be exported for easy in system volatile programming.
The ClockBuilder Pro EVB GUI can also be used to view or modify individual Si5351 registers as well as monitor
the device's power consumption.
Si535x-B20QFN-EVB
6 Rev. 0.4
7. Si535x-B20QFN-EVB Schematics
Place Y1 as close to pins U1.1 and U1.2 as possible.
Remove ground plane from underneath the crystal.
Place R24/C13 as close to
pin U1.3 as possible.
Place R109/C69 as close
to U1.6 as possible.
CLKin must be 50-Ohm stripline.
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Figure 4. Si5350/51 Main
Si535x-B20QFN-EVB
Rev. 0.4 7
I2C INTERFACE
STATUS LEDs
Place D1 and D5 close to Programming Socket (U7).
Place D2, D3, and D4 near USB connector.
BOARD CONFIGURATION
Place C26 and C27 as close as possible
to pins U5.16 and U5.17 respectively.
Set P2.6 to High-Z for VDD_PROG=3.3V,
O-D output low for VDD_PROG=4.0V.
MCU
Place C23 as close to pin U5.41 as possible.
2.7V to 5.5V0.9V to 5.5V
MCU PROGRAMMING
ADC MUX0 ADC MUX1
USB
EXTERNAL 5V0
+2.5V Ref
Address is 1001100
Address is 1001101
USB_D+
SDA_MCU
USB_D-
USB_D+
EN_I2C_5V
EN_I2C_5V
SEL_5350_PROG
2V50_REF
SCL_MCU
1V25_REF
BRD_CFG0
BRD_CFG3
BRD_CFG2
P4_PRG_DRV
P3_PRG_DRV
P0_PRG_DRV
BRD_CFG1
SDA_MCU
5V0_USB
SDA_5350_PRG
SCL_5350_PRG
2V50_REF
SCL_MCU
SEL_5350_PROG
1V25_REF
USB_D-
5V0_USB
3V3
3V3
3V3
5V0 5V0
5V0
5V0
3V3
5V0
VDD_PRG
3V3
3V3
3V3
5V0 5V0
5V0
3V3
3V3
3V3
5V0
VDD_pin
VDDOB_pin
VDDOC_pin
VDDOD_pin
VDDOA_pin
VDD
VDDOB
VDDOC
VDDOD
VDDOA
5V0
3V3
nEN_VDD 4
nEN_PROG_VOLT 4
nEN_VDDO0 4
nEN_VDD_PRG 4
nEN_VDDO1 4
SCL_5V
SDA_5V
nEN_VDDO2 4
nEN_VDDO3 4
SDA_5350_DUT 2
SCL_5350_DUT 2
SCL_5V
SDA_5V
SCL_5V
SDA_5V
5350_INTR2
+
C28
10uF
R551K
D7
MMBD3004S-7-F
R59
0
NI
C26
0.1uF
TP8 GPIO_P2.7
R47
220
R49
1K
C18
0.1uF
ADG728
U7
SDA
3
RESETB
2
S1
4
S2
5
S3
6
S4
7
D
8
A0
16
S8
9
S7
10
S6
11
S5
12
VDD
13
GND
14
SCL
1
A1
15
TP9 MCU_ADC
R51
0
R43
220
S1
SW PUSHBUTTON
C31
0.1uF
C33
0.1uF
J11
HEADER 2x2
1
1
3
3
2
2
4
4
R67 412
R50
1K
+
C34
10uF
U3
ADG736BRMZ
D1
10
IN1
1
S1A
2
GND
3
S2A
4
IN2
5
S2B
7
VDD
8
S1B
9
D2
6
D1
RED
PROG FAIL
R52
0
NI
D5
GREEN
RDY
R41 0
U4
C8051F340
VDD
10
REGIN
11
GND
7
VBUS
12
D+
8
D-
9
P0.0
6
P0.1
5
P0.2
4
P0.3
3
P0.4
2
P0.5
1
P0.6
48
P0.7
47
P1.0
46
P1.1
45
P1.2
44
P1.3
43
P1.4
42
P1.5
41
P1.6
40
P1.7
39
P2.0
38
P2.1
37
P2.2
36
P2.3
35
P2.4
34
P2.5
33
P2.6
32
P2.7
31
P3.0
30
P3.1
29
P3.2
28
P3.3
27
P3.4
26
P3.5
25
P3.6
24
P3.7
23
P4.0
22
P4.1
21
P4.2
20
P4.3
19
P4.4
18
P4.5
17
P4.6
16
P4.7
15
RST/C2CK
13
C2D
14
+
C29
10uF
C17
0.1uF
R53
0
NI
J19
5X2 Shrouded Header
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
C25
1uF
R61
1.02K
R36
1K
C22
0.1uF
D4
GREEN
BUSY
R54
0
C30
1uF
D6
MMBD3004S-7-F
J18
USB Type B
+V
1
D-
2
D+
3
GND
4
SH
5
SH
6
TP5
SCL
RED
C35
0.1uF
R42 1K
R60 1.02K
C20
0.1uF
C24
4.7uF
JP1
HEADER 1x3
TP4
SDA
RED
C23
0.1uF
R44 1K
R37
1K
R48
1.02K
D3
RED
INTR
J17
CONN TRBLK 2
1
2
TP7 GPIO_P1.7
R57
0
C21
0.1uF
R45
1.02K
ADG728
U6
SDA
3
RESETB
2
S1
4
S2
5
S3
6
S4
7
D
8
A0
16
S8
9
S7
10
S6
11
S5
12
VDD
13
GND
14
SCL
1
A1
15
R40
2K
R38
1K
R56
0
NI
2.5V
U5
VOUT
1
GND
2
VIN
3
C32
0.1uF
R46
220
C19
4.7uF
D2
GREEN
PROG PASS
R58
0
R39
2K
C27
0.1uF
PCA9517D
U2
VCCA
1
SCLA
2
SDAA
3
GND
4
VCCB
8
SCLB
7
EN
5
SDAB
6
Figure 5. MCU and Programming Socket
Si535x-B20QFN-EVB
8 Rev. 0.4
VDD
2.5V
3.3V
Power
Supplies
VDDOA
VDDOB
VDDOC
VDDOD
VDD_PRG
3V3
2.5V
3.3V
2.5V
3.3V
2.5V
3.3V
2.5V
3.3V
1.8V (JP3=N/C)
1.8V (JP4=N/C)
1.8V (JP2=N/C)
1.8V (JP6=N/C)
1.8V (JP5=N/C)
VDD_pin
VDD
5V0
VDDOB_pin
VDDOB
VDDOC_pin
VDDOC
5V0
VDDOD_pin
VDDOD
5V0 5V0
5V0
3V3
VDD_PRG
5V0
5V0
VDDOA_pin
VDDOA
nEN_VDDO13
nEN_VDDO23
nEN_VDDO03
nEN_VDDO33
nEN_VDD_PRG3
nEN_VDD3
nEN_PROG_VOLT 3
C52
0.1uF
R90
20.0
J24
JUMPER
1 2
R72
20.0
R74
20.0
JP6
HEADER 1x3
R84
5.90K
R106
10K
R103
9.53K
+
C55
10uF
J22
JUMPER
1 2
+
C65
10uF
R86
4.42K
+
C46
10uF
R107
2.55K
C62
0.1uF
C51
0.1uF
JP5
HEADER 1x3
R85
9.53K
R91
20.0
JP2
HEADER 1x3
R73
20.0
C56
4.7uF
C54
4.7uF
R98
6.98K
U12
TPS76201
IN
1
GND
2
EN
3
FB
4
OUT
5
J21
JUMPER
1 2
C45
4.7uF
+
C57
10uF
+
C43
10uF
+
C53
10uF
R94
100K
U13
TPS76201
IN
1
GND
2
EN
3
FB
4
OUT
5
C50
0.1uF
U9
TPS76201
IN
1
GND
2
EN
3
FB
4
OUT
5
C42
4.7uF
JP3
HEADER 1x3
R92
10K
C64
0.01uF
C58
0.1uF
+
C41
10uF
C59
0.01uF
U14
TPS76201
IN
1
GND
2
EN
3
FB
4
OUT
5
R95
10K
C60
0.01uF
C48
4.7uF
U11
TPS76201
IN
1
GND
2
EN
3
FB
4
OUT
5
R76
10K
JP4
HEADER 1x3
C44
0.01uF
R99
5.90K
R79
100K
R93
100K
R81
5.90K
R101
4.42K
R75
10K
C66
0.1uF
C49
0.01uF
R83
4.42K
C61
0.01uF
R100
9.53K
R105
2.55K
U10
TPS76201
IN
1
GND
2
EN
3
FB
4
OUT
5
R97
10K
C63
0.1uF
R87
5.90K
R82
9.53K
R80
100K
C47
0.01uF
J23
JUMPER
1 2
R102
5.90K
U15
TPS76201
IN
1
GND
2
EN
3
FB
4
OUT
5
R89
4.42K
J20
JUMPER
1 2
R77
100K
R78
10K
R104
4.42K
R88
9.53K
R96
100K
Figure 6. Power Supplies
Si535x-B20QFN-EVB
Rev. 0.4 9
8. Bill of Materials
Table 1. Si535x Bill of Materials
Item Qty Reference Value Manufacturer Manufacturer Part Number
1 5 C2,C5,C7,C8,C9 0.47 µF Venkel C0402X5R100-474K
2 1 C13 1nF Venkel C0603X7R101-102K
312
C17,C18,C20,C21,C22,C23,
C26,C27,C31,C32,C33,C35
0.1 µF Venkel C0402X7R100-104K
47
C19,C24,C42,C45,C48,C54,
C56
4.7 µF Venkel C1206X7R100-475M
5 2 C25,C30 1 µF Venkel C1206X7R250-105K
610
C28,C29,C34,C41,C43,C46,
C53,C55,C57,C65
10 µF Kemet B45196H5106M309
77
C44,C47,C49,C59,C60,C61,
C64
0.01 µF Venkel C0603X7R160-103M
88
C50,C51,C52,C58,C62,C63,
C66,C69
0.1 µF Venkel C0603X7R100-104K
98
C70,C71,C72,C73,C74,C75,
C76,C77
1 pF MuRata GRM1555C1H1R2CA01D
10 2 D1,D3 RED Panasonic LN1271RAL
11 3 D2,D4,D5 GREEN Panasonic LN1371G
12 2 D6,D7 MMBD3004S-7-F Diodes Inc. MMBD3004S-7-F
13 6 JP1,JP2,JP3,JP4,JP5,JP6 HEADER 1x3 Samtec TSW-103-07-T-S
14 10
J5,J25,J26,J27,J28,J29,J30,
J32,J33,J34
SMA
Johnson Com-
ponents
142-0701-801
15 1 J11 HEADER 2x2 Samtec TSW-102-07-T-D
16 1 J17 CONN TRBLK 2
Phoenix Con-
tact
1729018
17 1 J18 USB Type B Tyco 292304-1
18 1 J19
5X2 Shrouded
Header
Tyco 5103309-1
19 5 J20,J21,J22,J23,J24 JUMPER Samtec TSW-102-07-T-S
20 15
R3,R4,R5,R8,R9,R23,R24,R51
,R52,R53,R54,R56,R57,R58,
R59
0 Venkel CR0603-16W-000
21 1 R7 4.99K Venkel CR0402-16W-4991F
22 4 R12,R13,R39,R40 2K Venkel CR0603-10W-2001F
23 1 R26 100K Venkel CR0603-10W-104J
Si535x-B20QFN-EVB
10 Rev. 0.4
24 8
R36,R37,R38,R42,R44,R49,
R50,R55
1K Venkel CR0402-16W-102J
25 9
R41,R110,R111,R112,R113,
R114,R115,R116,R117
0 Venkel CR0402-16W-000
26 3 R43,R46,R47 220 Venkel CR0402-16W-221J
27 4 R45,R48,R60,R61 1.02K Venkel TFCR0402-16W-E-1021B
28 1 R67 412 Venkel TFCR0402-16W-E-4120B
29 5 R72,R73,R74,R90,R91 20 Venkel CR2512-1W-20R0D
30 7
R75,R76,R78,R92,R95,R97,
R106
10K Venkel CR0603-16W-1002F
31 6 R77,R79,R80,R93,R94,R96 100K Venkel CR0603-10W-1003F
32 5 R81,R84,R87,R99,R102 5.90K Venkel CR0603-16W-5901F
33 5 R82,R85,R88,R100,R103 9.53K Venkel CR0603-16W-9531F
34 5 R83,R86,R89,R101,R104 4.42K Venkel CR0603-16W-4421F
35 1 R98 6.98K Venkel CR0603-16W-6981F
36 2 R105,R107 2.55K Venkel CR0603-16W-2551F
37 1 R109 49.9 Venkel CR0603-16W-49R9F
38 1 S1 SW PUSHBUTTON
Mountain
Switch
101-0161-EV
39 4 TP3,TP20,TP61,TP62 BLACK Kobiconn 151-203-RC
40 10
TP4,TP5,TP53,TP54,TP55,
TP56,TP57,TP58,TP59,
TP60
RED Kobiconn 151-207-RC
41 4 TP7,TP8,TP9,TP52 WHITE Kobiconn 151-201-RC
42 4 TP38,TP39,TP48,TP49 Turret Mill-Max 2551-2-00-44-00-00-07-0
43 1 U1 Si5350X-B-GM Silicon Labs Si5350X-B-GM
44 1 U2 PCA9517D NXP PCA9517D
45 1 U3 ADG736BRMZ Analog Devices ADG736BRMZ
46 1 U4 C8051F340 SiLabs C8051F340-GQ
47 1 U5 2.5V Analog Devices AD1582BRT
48 2 U6,U7 ADG728 Analog Devices ADG728BRUZ
49 7 U9,U10,U11,U12,U13,U14,U15 TPS76201 TI TPS76201DBV
50 1 Y1 27MHz TXC 7M-27.000MEEQ-T
Table 1. Si535x Bill of Materials (Continued)
Item Qty Reference Value Manufacturer Manufacturer Part Number
ClockBuilder Pro
One-click access to Timing tools,
documentation, software, source
code libraries & more. Available for
Windows and iOS (CBGo only).
www.silabs.com/CBPro
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www.silabs.com/timing
SW/HW
www.silabs.com/CBPro
Quality
www.silabs.com/quality
Support and Community
community.silabs.com
http://www.silabs.com
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Disclaimer
Silicon Labs intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or
intending to use the Silicon Labs products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific device, and "Typical"
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