Silicon Labs Si535x-B20QFN-EVB User guide

Brand: Silicon Labs

Model: Si535x-B20QFN-EVB

Type: User guide

This manual is also suitable for

Si535x-B20QFN-EVB: Si5350/51 20-QFN Evaluation Board

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*

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

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).

C jumpers allow the Si535x to be disconnected from the I

C bus, allowing external control from another I

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

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)

5VExternal

Supply

USBMCU

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

C bus from the MCU. Removing the jumper breaks the

connection to the MCU and allows the user to feed in an external I

C signal to the device.

SDA—Connects the Si5350/51 SDA pin to the I

C bus from the MCU. Removing the jumper breaks the

connection to the MCU and allows the user to feed in an external I

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

input should be applied to either the V

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

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

5V0 5V0

5V0

3V3

5V0

VDD_PRG

3V3

5V0 5V0

5V0

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

MMBD3004S-7-F

R59

C26

0.1uF

TP8 GPIO_P2.7

R47

220

R49

C18

0.1uF

ADG728

SDA

RESETB

VDD

GND

SCL

TP9 MCU_ADC

R51

R43

220

SW PUSHBUTTON

C31

0.1uF

C33

0.1uF

J11

HEADER 2x2

R67 412

R50

C34

10uF

ADG736BRMZ

IN1

S1A

GND

S2A

IN2

S2B

VDD

S1B

RED

PROG FAIL

R52

GREEN

RDY

R41 0

C8051F340

VDD

REGIN

GND

VBUS

D+

D-

P0.0

P0.1

P0.2

P0.3

P0.4

P0.5

P0.6

P0.7

P1.0

P1.1

P1.2

P1.3

P1.4

P1.5

P1.6

P1.7

P2.0

P2.1

P2.2

P2.3

P2.4

P2.5

P2.6

P2.7

P3.0

P3.1

P3.2

P3.3

P3.4

P3.5

P3.6

P3.7

P4.0

P4.1

P4.2

P4.3

P4.4

P4.5

P4.6

P4.7

RST/C2CK

C2D

C29

10uF

C17

0.1uF

R53

J19

5X2 Shrouded Header

C25

1uF

R61

1.02K

R36

C22

0.1uF

GREEN

BUSY

R54

C30

1uF

MMBD3004S-7-F

J18

USB Type B

D-

D+

GND

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

R48

1.02K

RED

INTR

J17

CONN TRBLK 2

TP7 GPIO_P1.7

R57

C21

0.1uF

R45

1.02K

ADG728

SDA

RESETB

VDD

GND

SCL

R40

R38

R56

2.5V

VOUT

GND

VIN

C32

0.1uF

R46

220

C19

4.7uF

GREEN

PROG PASS

R58

R39

C27

0.1uF

PCA9517D

VCCA

SCLA

SDAA

GND

VCCB

SCLB

SDAB

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

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

GND

OUT

J21

JUMPER

1 2

C45

4.7uF

C57

10uF

C43

10uF

C53

10uF

R94

100K

U13

TPS76201

GND

OUT

C50

0.1uF

TPS76201

GND

OUT

C42

4.7uF

JP3

HEADER 1x3

R92

10K

C64

0.01uF

C58

0.1uF

C41

10uF

C59

0.01uF

U14

TPS76201

GND

OUT

R95

10K

C60

0.01uF

C48

4.7uF

U11

TPS76201

GND

OUT

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

GND

OUT

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

GND

OUT

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

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

C44,C47,C49,C59,C60,C61,

C64

0.01 µF Venkel C0603X7R160-103M

C50,C51,C52,C58,C62,C63,

C66,C69

0.1 µF Venkel C0603X7R100-104K

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

Timing Portfolio

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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