Silicon Laboratories Si47 User Manual

Si47xx-EVB

Si47XX EVALUATION BOARD USER’S GUIDE

1. Introduction

Thank you for purchasing the Silicon Laboratories, Inc. Si47xx Evaluation Board (EVB). The EVB and associated software have been designed to speed up the overall development process. We look forward to working with you, and have posted support articles, answers to frequently asked questions, and application notes at

www.mysilabs.com. Table 1 describes all of the available products and features in the Si47xx family.

Table 1. Product Family Function

Part

Number

Si4700 FM Receiver Si4701 FM Receiver with RDS Si4702 FM Receiver Si4703 FM Receiver with RDS Si4704 FM Receiver

Si4705 FM Receiver with RDS Si4706 Si4707

High Performance RDS Receiver

WB Receiver with SAME Si4708 FM Receiver Si4709 FM Receiver with RDS Si4710 FM Transmitter Si4711 FM Transmitter with RDS Si4712 FM Transmitter with RPS Si4713 FM Transmitter with RDS & RPS Si4720 FM Transceiver Si4721 FM Transceiver with RDS Si4730 AM/FM Receiver

General Description

High Performance RDS

RPS

SAME

Digital Input

Digital Output

Embedded FM antenna



Package Size (mm)

AEC-Q100 Qualified

4x4 4x4 3x3 3x3 3x3 3x3 3x3 3x3

2.5x2.5

2.5x2.5 3x3 3x3 3x3 3x3 3x3 3x3 3x3

RDS

FM Receiver

FM Transmitter





 

 

 

   

AM Receiver















WB Receiver

SW/LW Receiver



Si4731 AM/FM Receiver with RDS

Notes:

1. Si4706, Si4707, and Si474x are covered under NDA.

2. High Performance RDS is available in Si4705/31/35/85-D50 and later.

 



3x3

Si47xx-EVB

Table 1. Product Family Function (Continued)

Part

Number

General Description

Si4734 AM/SW/LW/FM Receiver Si4735 AM/SW/LW/FM Receiver with RDS Si4736 AM/FM/WB Receiver

Si4737 AM/FM/WB Receiver with RDS Si4738 FM/WB Receiver

Si4739 FM/WB Receiver with RDS Si4740 Si4741 Si4742

Si4743 Si4744

Si4745 Si4749

AM/FM Receiver

AM/FM Receiver with RDS

AM/LW/SW/FM/WB Receiver AM/LW/SW/FM/WB Receiver with

RDS

AM/LW/SW/FM Receiver

AM/LW/SW/FM Receiver with RDS

High-Performance RDS Receiver

Si4784 FM Receiver

RDS

FM Receiver

FM Transmitter

AM Receiver

WB Receiver

SW/LW Receiver



 

 

  



 

 

   

  

   

 

   

 



RPS

SAME

Digital Input

Digital Output

High Performance RDS



Embedded FM antenna

Package Size (mm)

AEC-Q100 Qualified

3x3 3x3 3x3

3x3 3x3 3x3 4x4 4x4 4x4

4x4 4x4

4x4 4x4 3x3

Si4785 FM Receiver with RDS

Notes:

1. Si4706, Si4707, and Si474x are covered under NDA.

2. High Performance RDS is available in Si4705/31/35/85-D50 and later.

2 Rev. 0.8





3x3

Si47xx-EVB

TABLE OF CONTENTS

1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

2. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

2.1. Si47xx Baseboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

2.2. Si47xx Daughtercards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

3. Recommended Hardware Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

3.1. Hardware Setup for FM Transmitter Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

3.2. Hardware Setup for FM or Weather Band Receiver Test . . . . . . . . . . . . . . . . . . . . .29

3.3. Hardware Setup for AM Receiver Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

4. Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

4.1. Software Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

4.2. Board Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

4.3. Switching Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

4.4. State Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

4.5. Disconnecting the EVB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

5. FM Transmitter GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

5.1. Configuring the Si47xx as an FM Transmitter Using Analog Audio Input . . . . . . . . .40

5.2. Configuring the Si47xx as an FM Transmitter Using Digital Audio with

Analog Audio Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

5.3. Configuring the Si47xx as an FM Transmitter Using Digital Audio with

SPDIF Digital Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

5.4. FM Transmitter Main Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

5.5. FM Transmitter Settings (Analog Mode) Property Window . . . . . . . . . . . . . . . . . . . .45

5.6. FM Transmitter Settings (Digital Mode) Property Window . . . . . . . . . . . . . . . . . . . .47

5.7. CODEC Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

5.8. SPDIF Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

5.9. FM Transmitter Receive Power Scan

5.10. FM Transmitter Radio Data Service (RDS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

5.11. FM Transmitter Register Map Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

6. FM Receiver GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

6.1. Configuring the Si47xx as an FM Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

6.2. FM Receiver Main Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

6.3. FM Receiver Settings Property Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

6.4. CODEC and SPDIF Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

6.5. FM Receiver RDS Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

6.6. FM Receiver RDS Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

6.7. FM UI Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

6.8. FM Receiver RSSI/SNR Graph Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

6.9. FM Receiver Register Map Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81

6.10. FM Receiver Logging Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

6.11. FM Receiver Configuration Helper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

7. Weather Band GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

7.1. WB Receiver Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

7.2. Weather Band Main Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Rev. 0.8 3

Si47xx-EVB

7.3. Weather Band Settings Property Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

7.4. Weather Band Receiver RSSI/SNR Graph Window . . . . . . . . . . . . . . . . . . . . . . . . .94

7.5. Weather Band Receiver Register Map Window . . . . . . . . . . . . . . . . . . . . . . . . . . . .95

7.6. Weather Band Receiver SAME Event Data (Si4707 only) . . . . . . . . . . . . . . . . . . . .96

8. AM Receiver GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97

8.1. AM Receiver Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97

8.2. AM Receiver Main Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98

8.3. AM Receiver Property Settings Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100

8.4. AM Receiver RSSI/SNR Graph Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105

8.5. AM Receiver Register Map Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

8.6. AM Receiver Logging Tools Info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

8.7. AM Receiver Configuration Helper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

9. Using the EVB with a 9 V Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109

10. Debugging Guidelines for Si47xx EVB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110

11. Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

12. Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124

12.1. Si47xx-EVB Baseboard Rev 1.6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124

12.2. Si471x/2x-EVB Daughtercard Rev 1.4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131

12.3. Si473x-EVB Daughtercard Rev. 1.4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133

12.4. Si474x–EVB Daughtercard Rev 1.3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135

12.5. Si4749-EVB Daughtercard Rev 1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137

12.6. Antenna Card Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139

13. Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141

13.1. Si47xx-EVB Baseboard Rev 1.6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141

13.2. Si471x/2x-EVB Daughtercard Rev 1.4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .144

13.3. Si473x-EVB Daughtercard Rev 1.4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .147

13.4. Si474x-EVB Daughtercard Rev 1.3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150

13.5. Si4749-EVB Daughtercard Rev 1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152

13.6. Antenna Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .155

Documentation Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .163

Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .164

4 Rev. 0.8

Si47xx-EVB

This user's guide contains information related to only the Si47xx EVBs itemized in Table 2. Table 2 serves as a quick reference guide for the sections of interest for your EVB. Sections 1, 4, 9, and 10 of the document apply to all EVBs.

Table 2. Quick Reference Guide

Part Description Recommended

HW Setup

Si4704/05/

06/84/85

Si4707

Si4710/11/

12/13

Si4720/21 Sections 2.1.,

Si4730/31 Sections 2.1.,

Si4734/35 Sections 2.1.,

Si4736/37 Sections 2.1.,

Sections 2.1.,

2.2.1., and

2.2.6. Section 2.2.2.,

2.2.5., 2.2.6. Sections 2.1.,

2.2.1., 2.2.6.

2.2.2., 2.2.5.,

2.2.6

2.2.2., 2.2.5.,

2.2.6.

2.2.2., 2.2.5.,

2.2.6.

Section 3.2. Section 6. Section 11. Tables

Section 3.2. Section 7. Section 11.,

Section 3.1. Section 5. Section 11. Tables

Sections 3.1. and 3.2.

Sections 3.2. and 3.3.

GUI Bill of Materials Schematics Layout

Sections 12.1.,

Sections 5. and 6.

Sections 6. and 8.

Sections 6.,

7., and 8.

29 and 30

Tables 29 and 31

29 and 30 Section 11. Tables

29, 31, 34, 35, and 36

Section 11. Tables 29 and 37

12.2.

Section 12.1.,

12.3. Sections 12.1.,

12.2. Sections 12.1.,

12.3., 12.6.1.,

12.6.2.

Sections 12.1.,

12.3., 12.6.3.

Sections 12.1.,

12.3., 12.6.3.

Sections

13.1., 13.2.

Section

13.1., 13.3. Sections

13.1., 13.2. Sections

13.1., 13.3.,

13.6.1.,

13.6.2. Sections

13.1., 13.3.,

13.6.3.

Sections

13.1., 13.3.,

13.6.3.

Si4738/39 Sections 2.1.,

2.2.2., 2.2.5.,

2.2.6.

Si4740/41/

42/43/44/45

Si4749

Section 2.1.,

2.2.3., 2.2.5.,

2.2.6. Sections 2.1.,

2.2.4. , 2.2.6.

Sections 3.2. and 3.3.

Sections 3.2.

d 3.3.

Section 3.2. Section 6. Section 11. Tables

Sections 6., and 7.

Sections 7. and 8.

Section 11. Tables 29 and 37

Section 11., Table 29, 32, 37

29 and 33

Sections 12.1.,

12.3., 12.6.3.

Sections 12.1.,

12.4., 12.6.4.

Sections 12.1.,

12.5.

Sections

13.1., 13.3.,

13.6.3.,

Sections

13.1.,

13.4.,13.6.4. Section

13.1., 13.5.

Rev. 0.8 5

Si47xx-EVB

There are ten different EVB kits within the Si47xx family. Each kit ships with a standard set of components that are common to all kits and a unique set that depends on the EVB kit P/N. Standard set of components are:

Customer welcome and evaluation letter EVB Characterization Report USB cable RCA cable 9V battery Headphones Si47xx CD including:

Data sheet Development application GUI rev 2.5.4 or later User's guide Quick start guide. The unique set of components for each EVB kit is defined in Table 3.

Table 3. Si47xx-EVB Kit Unique Contents

Adapters

EVB Kit Base

Board

Si4705-EVB

Si47xx

Base board

Rev1.3 or

Si4706-EVB

Si47xx

Base board

Rev1.3 or

Si4707-EVB

Si47xx

Base board

Rev1.3 or

Si4713-EVB

Si47xx

Base board

Rev1.3 or

Si4721-EVB

Si47xx

Base board

Rev1.3 or

Si4731-EVB

Si47xx

Base board

Rev1.3 or

later

Daughtercard Antenna

Cards

Si471x/2x

——YesNoNoNo

Daughtercard

Rev1.2 or later

Si471x/2x

——YesNoNoNo

Daughtercard

Rev1.2 or later

Si473x

Daughtercard

SAME

antenna

Rev1.2 or later

Si471x/2x

——YesNoNoNo

Daughtercard

Rev1.2 or later

Si471x/2x

——YesNoNoNo

Daughtercard

Rev1.2 or later

Si473x

Daughtercard

Rev1.2 or later

4731 antenna

kit (large ferrite, medium

ferrite, air loop

transformer)

Antennas BNC

Male to

RCA

Female

Whip

Yes No No No

antenna

Loop

Yes No No No

antenna

SMA

Male to

BNC

Female

SMA Female to BNC Male

SMA

Male to

SMA Male

6 Rev. 0.8

Table 3. Si47xx-EVB Kit Unique Contents (Continued)

Si47xx-EVB

Adapters

EVB Kit Base

Board

Si4735-EVB

Si4737-EVB

Si4743-EVB

Si4749-EVB

Si47xx

Base board

Rev1.3 or

Si47xx

Base board

Rev1.3 or

Si47xx

Base board

Rev1.3 or

Si47xx

Base board

Rev1.3 or

later

Daughtercard Antenna

Cards

Si473x

Daughter

Card Rev1.2

or later Si473x

Daughter

Card Rev1.2

or later Si474x

Daughter

Card Rev1.3

or later Si4749

Daughter

Card Rev1.0

or later

SW antenna Whip

WB antenna Whip

Antenna

Dummy

—Whip

Antennas BNC

Male to

RCA

Female

Yes No No No

antenna

Yes No No No

antenna

Whip

antenna

Yes Yes No Yes

Yes No Yes No

SMA

Male to

BNC

Female

SMA Female to BNC Male

SMA

Male to

SMA Male

Rev. 0.8 7

Si47xx-EVB

J79 SW1 J78

J76

J74 PB1

J69

J68

J61

J30

J52

J54

J57

J27

J75

U22 D1

J77

2. Description

Si47xx EVB consists of a baseboard, a daughtercard with the Si47xx part pre-mounted, and, if applicable, an antenna card. The baseboard is common and shared among all Si47xx EVBs. The following sections refer to both the images in the figures and the silkscreen on the Si47xx EVB. Please refer to both when using this guide.

2.1. Si47xx Baseboard

Figure 1. Baseboard Connectors, Jumpers, and Devices

Baseboard power connectors/devices:

J79 USB connector (using USB power) J78 External power connector J77 Battery connector J76 Terminal block (TB) power connector SW1 Switch to select between USB power or Ext power J61 Jumper: Baseboard power select (3.3 V or TB) J68 Jumper: Si47xx VIO power select (3.3 V or adjustable voltage via R73 or TB) J69 Jumper: Si47xx VDD power select (3.3 V or adjustable voltage via R74 or TB)

8 Rev. 0.8

Baseboard audio I/O connectors:

SW1

J78

EXT

LDO

1.25–3.9 V (R73)

LDO

1.25–7 V (R74)

Jumper

J68

Jumper

J69

Daughterboard

Si47xx

VIO

VDD

ADJ

+3.3 V

LDO

+3.3 V

(U17)

J79

USB

J76

Terminal

Block (TB)

Gnd

Vdd

Vio

ADJ

+3.3 V

Vmcu

Jumper

J61

VIO

VDD

J77

BATT

J6 RCA output J30 Line output

Note: Line output will not be supported on new EVBs as of February 14, 2011.

Baseboard clock connectors/devices:

X1 32.768 kHz crystal oscillator J52 Solder bump: select internal RCLK from oscillator J54 Ext RCLK SMA connector input J57 Jumper: Enable or Disable Int RCLK

Baseboard MCU connectors/devices:

U22 C8051F342 MCU J79 USB connector to communicate with the MCU J74 JTAG connector for the MCU PB1 Push button to reset the MCU D1 LED to confirm power supply to the MCU

Si47xx-EVB

Baseboard to Daughtercard connectors:

J27 Si47xx daughtercard connector J75 Expansion card connector (reserved)

2.1.1. Power Supply Network

Figure 2. Power Supply Block Diagram

Rev. 0.8 9

Si47xx-EVB

J69J68

J61

ADJ

+3.3V

ADJ

+3.3V

Vio Vdd Vmcu

ADJ

+3.3V

ADJ

+3.3V

J69

J68 J61

Vio Vdd Vmcu

The Si47xx EVB can be powered using one of the following power supply options:

1. USB power supply via J79

2. External dc (Ext DC) power supply via power jack J78 or battery via J77

3. Three separate power supplies (Vdd, Vio, Vmcu) via terminal block J76

The EVB has three supply rails: Vdd, Vio, and Vmcu. Vdd and Vio are routed directly to the daughtercard to power the Vdd and Vio pins on the Si47xx chip, while Vmcu is used to power the baseboard.

The external dc power supply and battery should not be connected simultaneously. Refer to Section 9. "Using the EVB with a 9 V Battery‚" on page 109 for more information.

USB Power Supply & EXT DC Power Supply

Switch SW1 is used to select between the USB power supply and Ext dc power supply. The USB power supply or the Ext dc power supply can be configured in one of the following two modes:

1. Fixed +3.3 V

2. Adjustable Vdd and Vio

Fixed +3.3 V

Only one LDO is used in this mode which outputs a +3.3 V supply to all three rails (Vdd, Vio, and Vmcu). The jumpers need to be set according to Figure 3 to use the EVB in this configuration. This is the default configuration on the EVB.

Terminal Block Power Supply

If the terminal block supplies are used, then jumpers J61, J68, and J69 need to be set according to Figure 4. The user then needs to connect three different power supp lies for Vdd, Vio, and Vmcu.

Figure 3. Default Fixed +3.3 V Jumpers Setting

Figure 4. Terminal Block Jumpers Setting

10 Rev. 0.8

2.1.2. Microcontroller

MCU

C8051F342

Si47xx

SEN~

6 7 8

19 18 17

SCLK

SDIO

GPO1

GPO2

GPO3/

DCLK

RST~

MS_SENB

MS_RSTB

MS_SCLK MS_SDIO

S_GPO3/DCLK

MS_GPIO2

SD_GPO1

Daughterboard

MD_GPIO3

TC_BCLK

(reserved for digital Rx )

Jumper

J41

MD_GPIO1

MD_GP4

J74

JTAG

PB1

Reset

J79

USB

Jumper

J65

Si47xx-EVB

Figure 5. MCU Block Diagram

The Si47xx EVB uses a Silicon Laboratories' C8051F342 microcontroller to control the Si47xx and to provide USB connectivity from the host PC (via connector J79). The LED D1 illuminates to confirm that power is being properly supplied to the C8051F342 and firmware has loaded. Push-button PB1 manually reset s the C8051F342. Th e JTAG connector J74 is used to program the C8051F342 at production time, and is not required thereafter.

Rev. 0.8 11

Si47xx-EVB

Daughterboard

Si47xx

RCLK

32.768 kHz INT RClk

Jumper

J52

J54

EXT

RClk

Jumper

J57

DIS_INT_RCLK

INT_RCLK

EXT_RCLK

Note: Jumper J44 and J45 are automatically configured in EVB Rev 1.3.

Jumper J5&J13

EVB In (TX only) 47xx Audio2 47xx Audio1 EVB Out (RX only)

CODEC OUT

DIN

LINE OUT

CODEC IN

LINE IN

DOUT

S/PDIF IN

SPDIF IN

DOUT

S/PDIF OUT

DIN

SPDIF

OUT

Jumper

J45

TX: Analog/Digital In TX: Analog In TX: Digital In RX: Analog/Digital Out

RX: Digital Out RX: Analog Out

AUDIO2

To_TX

From_RX

AUDIO1

From_RX

To_TX

Jumper

J44

RCA In

Line In (white)

SPDIF In

(white)

RCA Out

Line Out

(black)

SPDIF Out

(black)

Si47xx

(Daughterboard)

LIN/ DFS2 RIN/ DOUT

LOUT/ DFS1

ROUT/ DIN

14 13

AUDIO1

AUDIO2

J19

J30

Audio2 Select

Audio1 Select

Digital Input Select

2.1.3. Reference Clock

Figure 6. Reference Clock Block Diagram

The Si47xx accepts a 32.768 kHz reference clock at the RCLK pin. On the EVB, this clock is provided by a precision crystal oscillator. The user has the option of not using the onboard oscillator and bringing in the reference clock from an external source through SMA connector J54.

When the user chooses to provide an external RCLK, jumper J52 has to be set accordingly. The user has the option to turn off the onboard crystal oscillator by installing jumper J57.

2.1.4. Audio I/O

12 Rev. 0.8

Figure 7. Audio I/O Block Diagram

Si47xx-EVB

The EVB supports three different kinds of configurations for the FM transmitter:

Analog In to Analog In Analog In to Digital In Digital In to Digital In

Analog In to Analog In: This configuration provides a way for the user to evaluate the analog audio input for FM transmission.

Analog In to Digital In: This configuration provides a way for the user to evaluate the Si4 7xx digit al audio input for FM transmission using an analog audio input.

The input to the EVB is an analog audio provided via the RCA input connector J7 or LINE In connector J19 (white). Jumpers J5 and J13 are set to RCA input by default. The user has to change this jumper accordingly if LINE In is being used. Then the analog audio input is converted by CODEC U10 to a serial audio digital data before it is routed to the Si47xx digital audio input DIO and DFS pin 13 and 14 (Audio1). The DCLK input is routed to the GPO3/DCLK pin 17. Make sure that jumper J41 is set to DCLK to ensure proper operation.

Digital In to Digital In: This configuration provides a way for the user to evaluate the Si47xx digital audio input for FM transmission using S/PDIF digital audio commonly found in sound cards.

The input to the EVB is a digital S/PDIF data provided via the S/PDIF In connector J19 (white). The digital S/PDIF input is converted by S/PDIF Translator U9 to a serial audio digital data before it is routed to the Si47xx digital audio input DIO and DFS pin 13 and 14 (Audio1). The DCLK input is routed to the GPO3/DCLK pin 17. Make sure that jumper J41 is set to DCLK to ensure proper operation.

Note: Digital in through J19 will not be supported on new EVBs as of February 14, 2011.

The EVB supports three different kinds of configurations for the FM receiver:

Analog Out to Analog Out Digital Out to Digital and Analog Out Dual Output (Digital and Analog Out)

Analog Out to Analog Out: This configuration provides a way for the user to evaluate the analog audio output for receiver operation. The output of the Si47xx is routed to RCA output connector J6 and Line output connector J30.

Digital Out to Digital and Analog Out: This configuration provides a way for the user to evaluate the digital audio output for FM and AM receive using either S/PDIF digital audio or analog audio through the onboard CODEC. The Si47xx digital audio out is routed through the S/PDIF translator µ9 to S/PDIF output connector J30 and routed through the CODEC to RCA output connector J6 and line output connector J30.

Note: Digital output through J30 will not be supported on new EVBs as of February 14, 2011.

Dual Output (Digital and Analog Out): This configuration provides a way for the user to evaluate the analog

audio out and digital audio using S/PDIF digital audio for FM and AM. The analog output of the Si47xx is routed to RCA output connector J6 and line output connector J30 and the digital audio out is routed through the S/PDIF translator to S/PDIF output connector J30.

Note: Digital output through J30 will not be supported on new EVBs as of February 14, 2011.

Rev. 0.8 13

Si47xx-EVB

IMPORTANT: Jumper Settings

Because of the many possibilities available to configure the EVB, ensure that these four jumpers are set accordingly:

1. J41: GPO3/DCLK setting

2. J44: TX/RX setting for Audio1 I/O (automatically set by the GUI for baseboard 1.3 and later)

3. J45: TX/RX setting for Audio2 I/O (automatically set by the GUI for baseboard 1.3 and later)

4. J5, J13: Analog Audio Source, RCA or Line In

J41: GPO3/DCLK Setting

Upper—DCLK digital audio clock Lower—GPO3 digital control signal For configuring the Si47xx digital audio input, make sure that the jumper is set in the Upper position so that the

DCLK signal will be routed to the Si47xx.

J44: TX/RX Setting for Audio1 I/O (automatically set by the GUI for baseboard 1.3 and later)

Upper—Audio1 is set to FM transmit (pin 13 and 14 will be the digital audio input). Lower—Audio1 is set for FM receive (pin 13 and 14 will be analog/digital audio output).

J45: TX/RX Setting for Audio2 I/O (automatically set by the GUI for baseboard 1.3 and later)

Upper—Audio2 is set to FM transmit (pin 15 and 16 will be the analog/digital audio input). Lower—Audio2 is set for FM receive (pin 15 and 16 will be the digital audio output).

J5, J13: Analog Audio Source, RCA or Line In

Upper—RCA inputs are used for analog audio source. Lower—Line inputs are used for analog audio source.

14 Rev. 0.8

2.2. Si47xx Daughtercards

2.2.1. Si471x/2x Daughtercard

Si47xx-EVB

Figure 8. Si471x/2x Daughtercard Connectors and Devices

Daughtercard Connectors and Components:

U1 Si472x FM Transceiver or Si470x FM Receiver or Si471x FM Transmitter L2 Tuning Inductor R2 0  resistor to connect FM TX output to 10 cm trace built-in antenna C8 2 pF capacitor to connect FM TX output to J1 SMA connector R4 50  termination resistor J1 SMA connector for FM transmitter output or FM receiver input for embedded antenna J2 Header for putting external antenna for FM transmitter or embedded antenna for FM receiver J28 SMA connector for FM receiver input J29 Headphone jack for FM receiver

Rev. 0.8 15

Si47xx-EVB

Figure 9. Fully Assembled Si471x/2x EVB

Si470x/1x/2x EVBs use Si471x/2x daughtercard with different population options depending on the individual Si470x/1x/2x part. Please refer to individual Bill of Materials for each board.

16 Rev. 0.8

2.2.2. Si473x Daughtercard

Si47xx-EVB

Figure 10. Si473x Daughtercard Connectors and Devices

Daughtercard connectors and components:

J1 SMA connector for AM test circuit (does not apply to Si4707-EVB) J2 Header for antenna interface connection J24 Headphone jack J26 SMA connector for FM test circuit L4 270 nH inductor for FM input U1 Si473x AM/FM/SW Weather Band Receiver chip (or Si4707 WB/Same receiver for Si4707-EVB only) C2 Vdd bypass capacitor C3 FM test circuit ac coupling capacitor C8 AM input ac coupling capacitor C12 FM input ac coupling capacitor C13 AM test circuit ac coupling capacitor

Rev. 0.8 17

Si47xx-EVB

Figure 11. Fully Assembled Si473x-EVB with Ferrite Antenna Card

The Si473x/07 EVBs use Si473x daughtercard with different population options depending on the individual Si473x/07 part. Please refer to individual Bill of Materials for each card.

Table 4 shows the antenna and audio connections for the Si47xx EVBs.

18 Rev. 0.8

2.2.3. Si474x Daughtercard

Si47xx-EVB

Figure 12. Si474x Daughtercard Connectors and Devices

Daughtercard connectors and components:

J4 BNC connector for antenna connection C6, C1, C18 Vdd bypass capacitor C2 FM matching component L1, L5 FM matching component Q1–2 Cascode amplifier for AM front-end boost circuit. U1 Si4740/41/42/43 AM/FM Receiver chip The daughtercard implements the Si4740/41/42/43 AM/FM RDS receive solution. The Si474x daughtercard also has a cascode amplifier circuit made up of two transistors to provide gain boost for

AM front-end. The on-chip De-Q resistors will then be used to adjust the overall circuit gain. In cases where the AM reception is too strong, the front-end attenuators can be engaged by using GPIO1 as the control signal.

Rev. 0.8 19

Si47xx-EVB

Figure 13. Fully Assembled Si474x-EVB

20 Rev. 0.8

2.2.4. Si4749 Daughtercard

Si47xx-EVB

Figure 14. Si4749 Daughtercard Connectors and Devices

Daughtercard connectors and components: J1 SMA connector for pass-thru FM connection J2 SMA connector for FM antenna connection C2 Vdd bypass capacitor L1 FM matching component U2 Si4749 RDS Receiver The daughtercard implements the Si4749 RDS receive solution. The SMA connector, J2, allows the user to attach

a whip antenna for FM reception or a signal generator for FM test circuit. A pass-thru connection, J1, is also present to provide the FM signal to other FM receivers if necessary.

Rev. 0.8 21

Si47xx-EVB

Figure 15. Fully Assembled Si4749-EVB

22 Rev. 0.8

2.2.5. Antenna Interfaces

2.2.5.1. AM Antenna Interface

Si47xx-EVB

Figure 16. Antenna Board Options—SL4X30MW100T (Medium Ferrite), SL5X7X100MW70T (Large

Ferrite), and SL9X5X4MWTF Airloop

The user has the flexibility of choosing one of the two available antenna options. The user can either decide to use the airloop antenna or the ferrite loop stick antenna.

Rev. 0.8 23

Si47xx-EVB

2.2.5.2. SW and Weather Band Antenna Interfaces

Figure 17. SW/WB Antenna Card (SW Population) and (WB Population)

The BNC connector, J2, will be used to connect a whip antenna for shortwave, FM, and weather band reception. For SW reception, switch S1 must be in the SW position . The ferrite bar is used for AM reception, and the switch S1 must be in the AM position for AM reception.

When using the WB Antenna Card, WB reception is through the whip antenna. For a better listening experience, plug the headphones to J30 rather than J24.

Note: LW not supported with SW/WB Antenna Card.

2.2.5.3. Si474x Antenna Dummy Card

Figure 18. Si474x Antenna Dummy Card

24 Rev. 0.8

Table 4. Si47xx Antenna Connections

Si47xx-EVB

EVB Kit

Name

Si4705-X-

EVB

Si4706-X-

EVB

Si4707-B-

EVB

Si4713-B-

EVB

Si4721-B-

EVB

Si4731-X-

EVB

Si4735-X-

EVB

Si4737-X-

EVB

Receiver AM Antenna

Options

Si4705 None None Head-

Si4706 None None Head-

Si4707 None None None None Headphone J24

Si4713 None None Trace J2 None

Si4721 None None Head-

Si4731 SL5X7X100M

W70T Ferrite

/ Large Ferrite

SL4X30MW1

10T Ferrite /

Medium Fer-

rite

SL9X5X4MW TF Autotrans-

former / Air

loop

Si4735 SL5X7X100M

W70T Ferrite

/ SW Antenna

card

Si4737 SL5X7X100M

W70T Ferrite

/ WB Antenna

card

Connections

J2 Head-

Antenna

Options

phone

Trace J2

phone

Trace J2

phone

Trace J2

phone

Whip/SW

Antenna

Card

phone

Connections

J29 None None

J29 None

J24 None

J24 Whip/SW

J2 For SW recep-

J24 None Headphone J24

SW Antenna

Options

Antenna Card

tion, set the

S1 switch to

SW position.

LW is not sup-

ported by the

SW antenna

card.

Connections

WB Antenna

Options

Whip/SAME

Antenna Card

Connections

Rev. 0.8 25

Si47xx-EVB

Table 4. Si47xx Antenna Connections (Continued)

EVB Kit

Name

Si4743-C-

EVB

Si4749-C-

EVB

Receiver AM Antenna

Options

Si4743 Whip / Si474x

Antenna

Dummy card

Si4749 None None Whip J2 None

Connections

J4 Whip J4 Whip

Antenna

Options

Whip/WB

Antenna

Card

Connections

J2 Whip/WB

SW Antenna

Options

Connections

WB Antenna

Options

Antenna Card. For WB reception, set the S1

switch to WB

position

Connections