Skyworks Si5317-EVB Manual de usuario

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • October 4, 2021

Si5317-EVB

Si5317 EVALUATION BOARD USER’SGUIDE

Description

The Si5317-EVB User’s Guide provides a complete and

simple evaluation of the functions, features, and

performance of the Si5317.

The Si5317 is a pin-controlled 1:1 jitter-attenuating

clock for high-performance applications.

The Si5317 is based on Skyworks Solutions' 3rd-

generation DSPLL® technology, which provides any-

rate jitter attenuation in a highly integrated PLL solution

that eliminates the need for external VCXO and loop

filter components. The DSPLL loop bandwidth is user

programmable, providing jitter performance optimization

at the application level.

Features

No software required. Simple jumpers for device

configuration

Fully powered from either a single USB port or an

external power supply

Selectable external reference clock or on-board

crystal

Status LEDs

Header to connect to external test equipment for

automated testing

Si5317-EVB

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1. Functional Block Diagram

A functional block diagram of the EVB is shown in Figure 1. The Si5317-EVB provides alarm and status outputs,

programmable output clock signal format (LVPECL, LVDS, CML, CMOS), selectable loop bandwidths, and ultra

low jitter.

The Si5317 accepts a single clock input ranging from 1 MHz to 710 MHz and generates two equal frequency clock

outputs ranging from 1 to 710 MHz. The clock frequency range and loop bandwidth are selectable from a simple

look-up table. The Si5317-EVB has a differential clock input that is AC terminated to 50 and then AC-coupled to

the Si5317. The two clock outputs are AC-coupled. The XA-XB reference is usually a 114.285 MHz crystal; but

there are provisions for an external XA-XB reference (either differential or single-ended). The device status are

available on a ribbon header and LEDs. Control pins are strapped using jumper headers for device configuration

and various board options. The board can be powered using either external power supplies or from a PC's USB

port. Refer to the Si5317 data sheet for technical details of the device.

Figure 1. Si5317 EVB Block Diagram

Si5317

CKIN+

CKIN-

CKOUT1+

CKOUT1-

CKOUT2+

CKOUT2-

FRQTBL

FRQSEL[3:0]

BWSEL[1:0]

RATE[1:0]

SFOUT[1:0]

DBL2_BY

XA XB

INC

DEC

LOS

LOL

RST_B

2x5

JUMPER

HEADER

2x15

JUMPER

HEADER

Term*

Control

Status/

Control

VDD

GND

Header

USB

+ Regulator

DUT Power

3.3V

Term*

Si5317-EVB

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2. Si5317-EVB Input and Output Clocks

2.1. Input Clocks

The Si5317-EVB has a differential clock input that is ac terminated and ac coupled before being presented to the

Si5317. If the input clock frequencies are low (below 10 MHz), there are extra considerations that should be taken

into account. The Si5317 has a maximum clock input rise time specification of 11 ns that must be met (see CKNtrf

in the Si5317 data sheet). Also, if the input clock is LVCMOS, it might be advantageous to replace the input

coupling capacitors (C7, C12, C16. and C18) with 0 resistors. When using LVCMOS inputs, the user should

consider removing the ac termination and using source series termination located at the driving source.

Regardless of the input format, if the clock inputs are not approximately 50% duty cycle, it is highly recommended

to avoid ac coupling. For input clocks that are far off of 50% duty cycle, the average value of the signal that passes

through the coupling capacitor will be significantly off of the midpoint between the maximum and minimum value of

the clock signal, resulting in a mismatch with the common mode input threshold voltage (see Vicm, in the Si5317

data sheet).

2.2. XA-XB Reference

To achieve a very low jitter generation and for stability during holdover, the Si5317 requires a stable, low jitter

reference at its XA-XB pins. To that end, the EVB is configured with a 114.285 MHz third overtone crystal

connected between pins 6 and 7 of the Si5317. However, the Si5317-EVB is also capable of using an external XA-

XB reference oscillator, either differential or single-ended. For details concerning the allowed XA-XB reference

frequencies and their RATE settings, see the Si5317 data sheet. J1 and J2 are the SMA connectors with ac

termination. AC coupling is also provided that needs to be installed at C6 and C8. Table 1 explains the component

changes that are needed to implement an external XA-XB reference oscillator.

Table 1. XA-XB Reference Connections

Mode

Xtal Ext Ref

Ext Ref In+ NC J1

Ext Ref In- NC J2

C6, C8 NOPOP install

R8 install NOPOP

RATE0(See note 4) MH

RATE1(See note 4) MM

Notes:

1. Xtal is 114.285 MHz.

2. NC - no connect.

3. NOPOP - do not install.

4. J12 jumper, see Table 3.

5. C6 on bottom of the board.

Si5317-EVB

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2.3. Output Clock

The clock outputs are AC-coupled and are available on SMAs J5, J7, J9 and J11. For LVCMOS outputs, it might be

desirable to replace the AC coupling capacitors (C9,C14,C17, and C20) with 0 resistors. Also, if greater drive

strength is desired for an LVCMOS output, R6 and R10 can be installed.

2.4. Pin Configuration

J12 is the large jumper header in the center left of the board that implements the jumper plugs that configure the

pins of the Si5317. Each pin can be strapped to become either H, M, or L. The H level is achieved by installing a

jumper plug between the appropriate middle row pin and its VDD row pin. L is achieved by installing a jumper plug

between the appropriate middle row pin and its GND row pin. M is achieved by installing no jumper plug.

2.5. Evaluation Board Power

The EVB can be powered from two possible sources: USB or external supplies. A 3.3 V supply is required to run

the LEDs because of their rather large forward drop. The Si5317 power supply can be separated from the 3.3 V

supply so that the Si5317 can be evaluated at a voltage other than 3.3 V. It is important to note that when the USB

supply is being used, the EVB uses the USB port only for power and that the resulting power supply is strictly 3.3 V.

Here are the instructions for the various possibilities:

2.5.1. External Power Supplies

Install a jumper between J16.1 and J16.2 (labeled EXT).

There should be no USB connection.

If the Si5317 is not being operated at 3.3 V, two supplies should be connected to J14. Connect the 3.3 V supply to

J14.1 and J14.2 (labeled 3.3 V and GND). Connect the SI5317 power supply between J14.2 and J14.3 (labeled

GND and DUT).

If the Si5317 is to be operated at 3.3 V, J15 (labeled ONE PWR) can be installed, requiring only one external

supply. Connect 3.3 V power between J14.2 and J14.3 (labeled GND and DUT).

2.5.2. USB Power

Install a jumper between J16.2 and J16.3 (labeled USB).

Install a jumper at J15 (labeled ONE PWR).

With a USB cable, plug the EVB into a powered USB port.

2.5.3. USB 3.3V Power, External Si5317 Power

Install a jumper between J16.2 and J16.3 (labeled USB).

No jumper at J15 (labeled ONE PWR).

Connect the Si5317 power supply between J14.2 and J14.3 (labeled GND and DUT).

Si5317-EVB

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3. Connectors and LEDs

3.1. LEDs

3.2. Jumpers, Headers, and Connectors

Refer to Figure 2 to locate the items described in this section.

Figure 2. EVB Jumper Locations

Table 2. LED Descriptions

LED Label Significance

D1 CS_CA Not used

D2 LOS2 Not used

D3 LOS1 ON = no valid clock input

D4 LOL ON = Si5317 is not locked

D5 DUT_PWR ON = Si5317 power is present

D6 3.3V ON = 3.3 V power is present

Si5317-EVB

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Table 3. Configuration Header, J12

J12 Pin

J12.1 not used

J12.2 SFOUT0

J12.3 SFOUT1

J12.4 FRQSEL0

J12.5 FRQSEL1

J12.6 FRQSEL2

J12.7 FRQSEL3

J12.8 FRQTBL

J12.9 BWSEL0

J12.10 BSWEL1

J12.11 DBL2_BY

J12.12 not used

J12.13 RATE0

J12.14 RATE1

Table 4. Status Indication Header, J13

J13 Signal

J13.1 INC

J13.3 DEC

J13.5 LOS

J13.7 Not used

J13.9 Not used

J13.11 LOL

J13.13 RST_B

Si5317-EVB

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4. Schematic

FRQTBL

RATE0

AUTOSEL

DBL2_BY

SFOUT1

BWSEL1

SFOUT0

CS_CA

LOL

RST_B

LOS1

BWSEL0

RATE1

FILT_DUT_PWR

INC

DEC

FRQSEL0

FRQSEL3

FRQSEL2

FRQSEL1

LOS2

DUT_PWR

LOS2

LOS1

LOL

CS_CA

CKIN1+

to measure DUT supply

CKOUT1+

CKOUT1-

CKOUT2-

CKOUT2+

CKIN1-

CKIN2+

CKIN2-

Ext Ref In +

Ext Ref In -

to power plane

Status,

Control

mper

ugs

optionally

install for

CMOS outputs

see option list

option list

see option list

see option l

INC

DEC

LOS1

LOS2

CS_CA

LOL

RST_B

C15

10NF

C15

10NF

NOPOP

10NF

NOPOP

R1149.9 R1149.9

SMA_EDGE

R130 ohm R130 ohm

0 ohm

R10

0 ohm

NOPOP

R10

0 ohm

NOPOP

R949.9 R949.9

SMA_EDGE

C10

100N

C10

100N

10NF

NOPOP

10NF

NOPOP

SMA_EDGE

J12

14x3_M_HDR_THRU

J12

14x3_M_HDR_THRU

10A

10B

5C 5A

3A3C

13B

13C

11C

12A

11A

14B

10C

11B

14A

13A

12B

12C

14C

100N

TP1TP1

1UF

C19

10NF

C19

10NF

C17

100N

C17

100N

Si5315/17

VDD1 5

VDD2 10

GND1

GND2

CKIN1+

CKIN1-

CKIN_2+

CKIN_2-

Rate0

11 Rate1

CKOUT1+ 28

CKOUT1- 29

CKOUT2+ 35

CKOUT2- 34

DBL2_BY

LOS1 3

LOS2 4

CS_CA 21

RST

LOL 18

AUTOSEL

BWSEL1

BWSEL0

FRQTBL

FRQSEL3

FRQSEL2

FRQSEL1

FRQSEL0

SFOUT1 30

SFOUT0 33

INC 20

DEC 19

GND3

VDD3 32

C7100N C7100N

SMA_EDGE

J11

SMA_EDGE

J11

SMA_EDGE

C16100N C16100N

10NF

0 ohm

J10

SMA_EDGE

J10

SMA_EDGE

0 ohm

NOPOP

0 ohm

NOPOP

SMA_EDGE

10NF

J13

14_M_Header

J13

14_M_Header

1 2

3 4

5 6

7 8

9 10

11 12

13 14

R15

10k

R15

10k

10NF

NOPOP

R549.9 R549.9

C11

100N

C11

100N

C18100N C18100N

C12100N C12100N

TP2TP2

100N

C14

100N

C14

100N

R12

0 ohm

NOPOP

R12

0 ohm

NOPOP

R749.9 R749.9

R14 10R14 10

49.9

SMA_EDGE

Ferrite

1 2

R1100

NOPOP

R1100

NOPOP

C13

10NF

C13

10NF

GND

114.285 MHz

GND

114.285 MHz

1 3

2 4

SMA_EDGE

49.9

C20

100N

C20

100N

Figure 3. Si5317-EVB

Si5317-EVB

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LED_PWRRAW_3P3V

VBUS

DUT_PWR

USB_3P3VPHOENIX_3P3V

V3P3

DUT_PWR

CS_CA

LOS2

LOS1

LOL

DUT_PWR

GND

3.3V

EVB

main

power

USB power

ground

pins

mounting holes

Power Source

Selection

Single

3.3V supply

DUT Power

see option list

install jumper

to run DUT

from 3.3V

select 3.3V from either

USB or from J14

J23J23

C25

1UF

C25

1UF

BSS138

2 3

BSS138

2 3

D1Yel

CS_CA

D1Yel

CS_CA

D6Grn

3.3V

D6Grn

3.3V

J20J20

D2Red

LOS2

D2Red

LOS2

J14

Phoenix_3_screw

J14

Phoenix_3_screw

BSS138

2 3

C26

33UF

C26

33UF

J21J21

J15J15

R17150 R17150

C23

33UF

C23

33UF

D3Red

LOS1

D3Red

LOS1

BSS138

2 3

D4Red

LOL

D4Red

LOL

J17 USB

Gnd 4

D-

D+

R18150 R18150

J16J16

J19J19

BSS138

2 3

R160 ohm R160 ohm

J25J25

D5Grn

DUT_PWR

D5Grn

DUT_PWR

R19

R150x4

R19

R150x4

1 8

2 7

3 6

4 5

FAN1540B

NC1

VOUT

VIN

GND 6

NC3 5

NC2 4

PAD

L2 FerriteL2 Ferrite

1 2

J26J26

J24J24

C21

220UF

C21

220UF

R20

10k

R20

10k

J22J22

J18J18

C22

1UF

C22

1UF

C24

220UF

C24

220UF

Figure 4. LED and Power/USB

Si5317-EVB

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5. Bill of Materials

Item Qty Reference Part Mfr MfrPartNum BOM Digikey Footprint

1 6 C1,C2,C3,

C13,C15,

C19

10NF Venkel C0603X7R160-

103KNE

603

2 11 C4,C7,C9,

C10,C11,

C12,C14,

100N Venkel C0603X7R160-

104KNE

603

C16,C17,

C18,C20

3 3 C5,C22,C25 1UF Venkel C0603X7R6R3-

105KNE

603

5 2 C21,C24 220UF Kemet T494B227M004A

399-4631-

1-ND

SM_C_3528_21

6 2 C23,C26 33UF Venkel TA006TCM336M

3528

7 1 D1 Yel Panasonic LN1471YTR P11125CT

-ND

LED_gull

8 3 D2,D3,D4 Red Lumex LN1271RAL P493CT-

LED_gull

9 2 D5,D6 Grn Panasonic LN1371G P491CT-

LED_gull

11 10 J1,J2,J4,J5,

J6,J7,J8,J9,

SMA_

EDGE

Johnson 142-0701-801 J502-ND SMA_EDGE_p062

J10,J11

13 1 J12 14x3_M_H-

DR_THRU

any two and one row

side by side

20x3_M_HDR_THRU

15 1 J14 Phoenix_3

_screw

Phoenix MKDSN 1.5/3-

5.08

277-1248-

Phoenix3pinM_p2pitch

16 1 J15 Jmpr_2pin

17 1 J16 Jmpr_3pin 3pin_p1pitch

18 1 J17 USB FCI 61729-0010BLF 609-1039-

USB_typeB

19 4 J19,J20,J24,

J26

Jmpr_1pin 1pin_p1pitch

20 2 L1,L2 Ferrite Venkel FBC1206-471H 1206

21 5 Q1,Q2,Q3,

Q4,Q5

BSS138 On Semi BSS138LT1G BSS138L

T10SCT-

SOT23

Si5317-EVB

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Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • October 4, 2021

23 4 R2,R8,R13,

R16

0 ohm Venkel CR0603-16W-

000T

603

24 6 R3,R4,R5,

R7,R9,R11

49.9 Venkel CR0603-16W-

49R9FT

603

26 1 R14 10 Venkel CR0603-16W-

10R0FT

603

27 2 R15,R20 10k Venkel CR603-16W-

1002FT

603

28 2 R17,R18 150 Venkel CR0603-16W-

1500FT

603

29 1 R19 R150x4 Panasonic EXB-38V151JV Y9151CT-

1206x4

31 1 U1 Si5317 Skyworks

Solutions

Si5317A-C-GM QFN-36

32 1 U2 FAN1540B Fairchild FAN1540BPMX FAN1540

BMPXCT-

MLP6

33 1 X1 114.285

MHz

TXC 7MA1400014 xtal 3.2 x 2.5

34 3 standoff SPC Tech 2397

35 3 spacer Richco NSS-4-4-01

4 2 C6,C8 10NF Venkel C0603X7R160-

103KNE

NOPOP 603

12 1 J3 Jmpr_2pin NOPOP

22 1 R1 100 Venkel CR0603-16W-

1000FT

NOPOP 603

25 3 R6,R10,R12 0 Venkel CR0603-16W-

000T

NOPOP 603

30 2 TP1,TP2 test_points NOPOP

14 1 J13 14_M_

Header

3M N2514-6002RB NOPOP MHC14K-

14pinMdualHead-

er_p1pitch

19 9 J18,J21,J22,

J23,J25

Jmpr_1pin NOPOP 1pin_p1pitch

Item Qty Reference Part Mfr MfrPartNum BOM Digikey Footprint

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