SI477x [SILICON]

Si477X EVALUATION BOARD USERâS GUIDE; Si477X评估板USERA ????指南


型号：	SI477x
厂家：	SILICON
描述：	Si477X EVALUATION BOARD USERâS GUIDE Si477X评估板USERA ????指南
文件：	总62页 (文件大小：3180K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Si477x-EVB

Si477X EVALUATION BOARD USER’S GUIDE

Description

Features

The Si477x EVB is a platform designed to simplify  Complete antenna-to-audio evaluation system

evaluation and development with the Silicon

Laboratories Si477x series tuners. The platform

includes both hardware and software tools to easily

configure and operate the tuner.

 Intuitive software interface supports simple

evaluation to detailed performance testing

 Flexible hardware interface for evaluation and

prototyping of various RF front end circuit options

This guide contains the following information:

 Portable operation facilitates field measurements

 Quick Start Guide: Three quick steps to set up your

with only a PC

board and tune a station

 Kit Contents: Components included in the kit

 Software/GUI Guide: Installation and usage of the

evaluation GUI

 Hardware Guide: Description, configuration, and

design files for baseboard and daughtercards

Functional Block Diagram

Analog

Audio

Si477x Tuner

Daughter Card

Micro-

controller

GUI

USB

Rev. 0.3 6/12

Si477x-EVB

1. Introduction

Thank you for purchasing the Silicon Laboratories Si477x Evaluation Kit. This kit includes hardware and software

tools to facilitate evaluation and development with the Si477x AM/FM Tuner family.

Figure 1. Si477x Evaluation Board

Rev. 0.3

Si477x-EVB

2. Kit Contents

2.1. Si477x-EVB Evaluation Board

All material and information contained in the enclosure is confidential and covered under non-disclosure

agreement (NDA).

Quark baseboard (1)

Si477x Rev 2.0 and later daughtercard (1)

USB cable (1)

BNC to RCA adapters (2)

RCA cable (1)

Loop antenna (1)

BNC to SMA adapter (1)

Headphones (1)

9 V universal adapter (1)

Documentation and software CD including the following:

Si477x-EVB User's Guide

Development GUI Software and Example Code

Microsoft.net Framework for use with the Development GUI

AN645: Si477x Programming Guide

Si477x Release Notes

2.2. Si4770Module-A-EVB Module Kit

Separately from the Si477x-EVB kit, user's may also order an Si4770Module-A-EVB kit. All material and

information contained in the enclosure is confidential and covered under non-disclosure agreement (NDA).

4-Layer Si4770 Module Rev1.0

Si477x Interposer Rev1.0 card

Rev. 0.3

Si477x-EVB

3. Quick-Start Guide

This section gives three quick steps to get your evaluation kit installed and running. Refer to the following sections

for additional details on configuring and using the kit.

3.1. Install the Software

Insert the CD.

Open the file Start_Here.htm.

Click on the link to the GUI.

Run setup.exe.

3.2. Connect the Board

Configure the PCB for USB as the power source:

Slide switch to "USB".

Place four jumpers between "LDO" and "TNR" positions.

Figure 2. Selecting USB Power Source

Connect headphones or powered speakers to the HEADPHONE_OUT jack.

Figure 3. Audio Output Connection

Rev. 0.3

Si477x-EVB

Connect an AM loop antenna or FM whip antenna to the tuner daughtercard using the appropriate

connection. For conducted tests, a signal source may be connected to AM or FM using the appropriate

SMA connectors.

Figure 4. Antenna Connections

Rev. 0.3

Si477x-EVB

3.3. Listen

Launch the GUI from the desktop shortcut:

Select FM receive mode, click Initialize:

Figure 5. Initialization Window

Tune a station by entering the frequency or dragging the tuning slider.

Decrease the volume by dragging the Volume slider.

Figure 6. FM Receiver Window

Rev. 0.3

Si477x-EVB

4. Software

The Si477x Evaluation Kit includes a graphical user interface (GUI) to simplify tuner evaluation and configuration.

This utility is useful both for demonstrations and for fine-tuning the various tuner properties and modes before

coding firmware in the target system. The GUI is designed for Windows XP and later.

4.1. Installation

The software installation has two components: the GUI and the Microsoft.NET Framework. The board

communicates via a USB HID interface, so no additional hardware drivers are needed.

Install the software components by the following steps:

1. Locate the installation software:

a. Open a window to the installation CD.

b. Open the software folder.

2. Install the software:

a. Start setup.exe.

b. Follow the on-screen prompts.

Notes:

You may receive an error stating: "This setup requires the .NET Framework version 4.0." If so, install the

.NET version provided on the CD (dotnetfx.exe).

Important, release-specific notes may be included in the Readme.doc file. Please review this before

finalizing the installation.

Register at the Broadcast Audio Customer Support Page at www.silabs.com. All supporting documentation

including data sheets, application notes, example code, and important layout guidelines are available only

through the support site. Silicon Labs periodically updates versions of the content above and posts them

there. All materials are covered under NDA.

Rev. 0.3

Si477x-EVB

4.2. Initialization

The Silicon Labs GUI will commutate with the evaluation board(s) and tuner(s) to identify which are in use. The

applicable part numbers will be displayed under “device info” during initialization and on the front panel while the

radio is in operation. Only the available application modes and tuners will be displayed by the GUI when initializing

the tuner. Note that this user’s guide may show figures with application modes and features that may not be

available depending upon the tuner part number or daughter card in use.

Figure 7. Initialization Window

1. Start the software by either using the desktop shortcut or from:

Start  Programs  Silicon Laboratories, Inc  Silicon Labs Audio GUI

2. Configure initialization options as shown in Figure 7. “Initialization Window”. A number of powerup options

are available:

a. EVB Application: Select one of the following EVB application modes:

Single tuner

RDS/VICS

b. Initial Boot Mode: Selects whether the receiver will first start in FM Receive mode, AM Receive

mode, etc.

c. Clock Configuration: This section displays information on the crystal oscillator clock frequency and

crystal loading cap capacitance. The Clock frequency can not be modified in conjunction with a Quark

Baseboard.

d. Output Mode: Configures tuner and EVB for either analog or MPX output through the

HEADPHONE_OUT and L/R LINE_OUT jacks. Use the HEADPHONE_OUT jack for listening through

headphones or powered speakers. Use the L/R LINE_OUT jack for low-distortion measurements.

Other output modes are not supported by the Quark Baseboard.

e. XTAL Loading Cap: Indicates the crystal frequency trim capacitance. This is retrieved from an

EEPROM on the daughtercard.

Additional options are available in the Firmware Configuration window, shown in Figure 9. “Firmware

Configuration Window”.

Rev. 0.3

Si477x-EVB

f. Firmware selection: The firmware for the tuner (or tuners in multi-tuner configurations) may be

selected by selecting the appropriate Tuner tab as shown in Figure 9. “Firmware Configuration

Window”. In particular,

i. Select either the firmware image in the chip's NVRAM by selecting From Device or

ii. Select a firmware image from a list of options.

g. Part Number and I C address for the selected device. These are read back/configured automatically

from the tuner or ID EEPROM on the daughtercard.

h. Default Mode: UI default mode allows the selection of the UI configuration as a default for the part

number, last used UI state, or you can select a configuration previously saved (see Figure 8). For

saving a UI configuration, see Section 5.1.

Figure 8. Default Mode Selection

Rev. 0.3

Si477x-EVB

Note: If window displays "No Boards Found", check USB connections and power supply configuration.

Figure 9. Firmware Configuration Window

Rev. 0.3

Si477x-EVB

5. Saving, Retrieving, and Deleting the Configuration State

This GUI feature allows the user to save, retrieve and delete the configuration state which contains the property

values.

5.1. Saving the Current Configuration State

This feature allows the user to save the current configuration state which contains the property values.

1. Go to File State Management Save Current State as shown in Figure 10.

Figure 10. Saving Configuration State

2. Click on Save Current State and the Select Configuration window shown in Figure 11 will pop up. Enter the

name of the configuration state and click OK. The current state called My Configuration which contains the

property values is now saved.

Figure 11. Naming a Configuration State During Save

Rev. 0.3

Si477x-EVB

5.2. Retrieving the Configuration State

This feature allows the user to retrieve the configuration state.

1. Go to File  Initialize Tuner 1 tab as shown in Figure 12. The different states which were saved before

are available in the default mode for user selection.

Figure 12. Saved Configuration State

2. In Figure 13 below configuration state My Configuration is selected. Once the selection is made, click on

Initialize and the part will boot with the property values stored in the My Configuration state.

Figure 13. Power Up from Saved Configuration State

Rev. 0.3

Si477x-EVB

5.3. Deleting the Configuration State

This feature allows the user to delete the configuration state.

1. Go to File State Management Delete State as shown in Figure 14.

Figure 14. Delete Configuration State

2. Click on Delete state and the Delete Configuration window shown in Figure 15 will pop up. Select the

configuration state you want to delete and click OK.

Figure 15. Selecting Configuration State to Delete

In addition to saving, retrieving and deleting the configuration state the GUI also gives the end user the ability to

export the contents of the configuration state into a file, the contents of which can be viewed using a text editor and

which can be imported to different machines to allow multiple users to test the tuner with the same configuration

state.

Rev. 0.3

Si477x-EVB

5.4. Exporting Saved State

This feature allows the user to export the contents of the configuration state into a file.

1. Go to File State Management Export Saved State to export the saved state into a file as shown in

Figure 16.

Figure 16. Exporting Saved State

2. Click on Export Saved State and the Select Configuration to Export window will pop up as shown in

Figure 17.

Figure 17. Selecting Configuration State to Export

3. Select the configuration state to export and click OK to save the configuration file with a .ini extension. This

configuration file can now be opened in a text editor and saved to different machines. The contents of the

configuration file will be displayed in a format as shown in Figure 18 below.

Rev. 0.3

Si477x-EVB

Figure 18. Saved Configuration File

Rev. 0.3

Si477x-EVB

5.5. Import State File

This feature allows the user to import the configuration state file which has been saved using Export Current State

and hence use the same configuration state file on different machines.

1. Go to File State Management Import State File to export the saved state into a file as shown in

Figure 19.

Figure 19. Import Configuration State

2. Select the file to import.

3. Once the state file is imported it will show up in the Default Mode of the Initialization window. In Figure 20

below the test.ini file was imported using Import State File and once that was done it shows up in the

default mode in the Initialization window.

Figure 20. Selecting Imported State File

Rev. 0.3

Si477x-EVB

5.6. AM Receive Mode

Initialize the receiver as described in Section “4.2. Initialization”, selecting AM mode. The Tuner panel will appear

as shown in Figure 21. “AM Tuner Window”.

Figure 21. AM Tuner Window

1/2.Frequency Numerical Window/Slider: Use to set the receiver frequency. This also acts as an indicator

for receive frequencies selected by seek or preset features. Note that frequency resolution is set by the

Band and Spacing properties of the tuner via the Properties window.

3.Tuning Increment/Decrement: Adjusts receiver frequency in increments set by the Spacing property.

4. Seek: Executes tuner Seek command as configured by the applicable Seek/Tune properties.

5. Auto Scan: Executes sequential tuner Seek commands to cover the entire band. Valid stations are

denoted beneath the tuner by red tick marks. Clicking the To Presets button automatically populates the

presets with the strongest twelve stations found.

6. Presets: Each Preset button stores frequencies for convenient recall. Frequencies may be either

automatically programmed using the Auto Scan as described above or may be manually set by selecting a

frequency and holding the desired button until the frequency is memorized.

7. Volume/Mute: Sets the audio L/R output volume. The Mute button engages the AUDIO_MUTE property

for both channels.

Note: Volume must be set to maximum (63) for all performance tests.

Rev. 0.3

Si477x-EVB

8. Status Indicators: These indicators show the various metrics reported back to the user via either the

AM_RSQ_STATUS or AM_ACF_STATUS API commands. Commonly used metrics include the following:

RSSI: The Received Signal Strength Indicator at the IC input. Note that this will vary from the actual

antenna RSSI due to front end gains or losses.

SNR: The Signal to Noise Ratio at the demodulator input. Note that this is not the SNR of the Audio output.

LASSI: Adjacent Signal Strength Indicator. Indicates (signal + noise) at the low-side adjacent frequency in

dB relative to the wanted carrier.

HASSI: Adjacent Signal Strength Indicator. Indicates (signal + noise) at the high-side adjacent frequency

in dB relative to the wanted carrier.

Freq Off: Frequency offset of received signal.

Chan BW: Receiver channel bandwidth.

Hicut: Hicut corner frequency.

Soft Mute: Indicates the attenuation applied.

9. Status Indicator Undock: Opens a separate window with status indicators, as shown in Figure 22. “AM

Status Indicator Window”.

Figure 22. AM Status Indicator Window

10. Band Selector: Chooses which AM/SW/LW band to use for frequency tuning/seeking

Notes:

Many of these mitigation engines and indicators are configured via properties.

Refer to the Programming Guide for specific detail, including configuration, applicable ranges, etc.

The USB power supply is provided for convenience only. Better performance will be attained using the

external 9 V supply option.

Rev. 0.3

Si477x-EVB

5.7. FM Receive Mode

Initialize the receiver as described in Section “4.2. Initialization”, selecting FM mode. The Tuner panel will appear

as shown in Figure 23. “FM Tuner Window”.

Figure 23. FM Tuner Window

1/2.Frequency Numerical Window/Slider: Use to set the receiver frequency. This also acts as an indicator

for receive frequencies selected by seek or preset features. Note that frequency resolution is set by the

Band and Spacing properties of the tuner via the Properties window.

3.Tuning Increment/Decrement: Adjusts receiver frequency in increments set by the Spacing property.

4. Seek: Executes tuner Seek command as configured by the applicable Seek/Tune properties.

5. Auto Scan: Executes sequential tuner Seek commands to cover the entire band. Valid stations are

denoted beneath the tuner by red tick marks. Clicking the To Presets button automatically populates the

presets with the strongest twelve stations found.

6. Presets: Each Preset button stores frequencies for convenient recall. Frequencies may be either

automatically programmed using the Auto Scan as described above or may be manually set by selecting a

frequency and holding the desired button until the frequency is memorized.

7. Volume/Mute: Sets the audio L/R output volume. The Mute button engages the AUDIO_MUTE property

for both channels.

Note: Volume must be set to maximum (63) for all performance tests.

8. Status Indicators: These indicators show the various metrics reported back to the user via either the

FM_RSQ_STATUS, FM_AGC_STATUS or FM_ACF_STATUS API commands. Commonly used metrics

include:

RSSI: The Received Signal Strength Indicator at the IC input. Note that this will vary from the actual antenna

RSSI due to front end gains or losses.

SNR: The Signal to Noise Ratio at the demodulator input. Note that this is not the SNR of the Audio output.

LASSI: Low Side Adjacent (100 kHz) Channel Strength Indicator reports the (Signal + Noise) power relative to

the carrier.

HASSI: High Side Adjacent (100 kHz) Channel Strength Indicator reports the (Signal + Noise) power relative to

the carrier.

ASSI200: The 200 kHz offset alternate signal strength indicator. Indicates (signal + noise) at the 200 kHz

offset alternate channel in dB relative to the wanted carrier. Returns the maximum of high and low side

alternate channels.

Rev. 0.3

Si477x-EVB

USN: The Ultrasonic Noise indicator. Higher numbers indicate better signal quality.

Multipath: Multipath indicator. Higher numbers indicate more severe multipath impairment.

Freq Off: Frequency offset of received signal.

Deviation: FM deviation indicator

Channel BW: Receiver channel (IF) bandwidth.

Stereo: Indicates the Stereo/Mono blend ratio.

HI-Cut/HI-Blend: Hicut mitigation applied to either the Left Plus Right (LPR) or Left Minus Right (LMR) audio

signals.

Soft Mute: Indicates the soft mute attenuation applied.

FMAGC1, FMAGC2, PGA Gain: AGC indicators for FM AGC.

9. Status Indicator Undock. Opens a separate window with all status indicators for more convenient viewing

as shown in Figure 24. “FM Status Indicator Window”.

Figure 24. FM Status Indicator Window

10. Stereo/Mono selector. Force the receiver to mono mode by selecting this button. The tuner will

automatically blend between stereo and mono mode when Stereo is selected.

11. RDS Program Service and Radio Text indicators. Displays received RDS strings.

Notes:

Many of these mitigation engines and indicators are configured via properties.

Refer to the Programming Guide for specific details, including configuration, applicable ranges, etc.

The USB power supply is provided for convenience only. Better performance will be attained using the

external 9 V supply option.

Rev. 0.3

Si477x-EVB

5.8. Configuring Tuner Properties

As described in the Programming Guide, various tuner aspects are configured through either a command/response

or get/set property API interface. The GUI contains a window to help manage properties under Window 

Properties as shown in Figure 25. “Properties Window”.

Figure 25. Properties Window

Properties are grouped by category. Properties specific to the Si477x device are prefixed with either FM or AM. FM

RDS Settings, FM UI Settings, and AM UI Settings are categories that are used to control UI behavior but do not

modify the property settings on the Si477x device. To see all properties associated with the Si477x device, choose

FM: All or AM: All: All, depending on what mode the device is powered up into.

Most properties included in the API are also included in the properties window. Clicking on a particular property

opens a brief description of the property and its arguments. Refer to the Programming Guide for detailed

information on the properties and values.

Property addresses and values can be displayed or hidden using the Display/Hide Details button. When displayed,

all of the current properties can be viewed or exported to a file (using the Export Properties button) and the last

property changed is displayed. By clicking the Export Properties button shown in Figure 25, the properties can be

exported to a .csv file.

Rev. 0.3

Si477x-EVB

5.9. Register Read/Write

The software's graphical user interface and property windows provide an easy, intuitive method of configuring the

device. In development, however, it is often useful to have low-level bytewise read/write interface to the tuner. The

GUI provides this interface under Window  Register Map.

Figure 26. “Register Map Window” shows an example read/write operation. The FM_RSQ_STATUS request is sent

with an ARGument of 0x00. The reply returned in the RESPonse fields.

Refer to the Programming Guide for detailed information on the register definitions and their arguments and

responses.

Figure 26. Register Map Window

Rev. 0.3

Si477x-EVB

5.10. Other Useful Tools

5.10.1. RSSI/SNR Graphing Utility

The Graphing utility Window  RSSI/SNR Graph provides a scan of user selectable metrics versus frequency.

Graphing options include RSSI, SNR, Low Adjacent Channel Strength (LASSI), and High Adjacent Channel

Strength (HASSI). These metrics can be individually selected for display. A line or bar graph style can be chosen

and markers indicating valid stations and their frequencies can be displayed. Once the preferred graphing and

displays have been selected, click the “Draw” button.

Figure 27 shows an example scan in the FM band. Stations above the red line meet the RSSI threshold for valid

stations. The SNR page shows a complementary scan of SNR values across the band as well as the SNR

threshold for valid stations.

Figure 27. RSSI/SNR Graphing Utility

Rev. 0.3

Si477x-EVB

5.10.2. Blend/Hicut/Soft Mute Configuration Helper

The mitigation engines such as FM stereo/mono blend, hi-cut, hi-blend, and soft mute have configurable low- and

high-end thresholds. These thresholds may be configured numerically through the Properties page or graphically

through the Configuration Helper.

Figure 28 shows an example of the Configuration Helper set to display FM stereo/mono blend based on RSSI. This

example also provides the ability to set the Fast and Slow metrics on the same screen. If a configuration setting

does not have Fast and Slow metrics available, only one graph and column of configurable values will appear. On

both graphs the green line depicts the blend (in percent stereo). The green point shows the current operating point

of the receiver (30 dBuV RSSI which results in 18% stereo given the property settings). The cyan line reflects the

actual reported stereo value (14%) from the Si477x device which is mitigated by all the metrics (RSSI/Multipath/

USN) in this example. Since the cyan line is tracking the green point or RSSI mitigated blend, the device is limiting

stereo based on RSSI in this example.

When selecting a mitigation control item, the description text is updated automatically. The name of the property

being changed is displayed in bold. The property can then be found in the property window by finding the property

with the same name being displayed in the configuration helper.

Changes made to this page are applied to the tuner immediately, making it a useful tool in real-time configuration of

the mitigation engines.

Figure 28. Configuration Helper

Rev. 0.3

Si477x-EVB

5.10.3. RDS Receive Data

The Si477x UI features tools help in capturing and analyzing RDS performance.

The first is the RDS Receive Data window (under menu Window  RDS Receive Data). This shows various RDS

metrics such as the decoded RDS fields, group counters, and performance statistics. This is shown in Figure 29.

Figure 29. RDS Receive Data Window

The second is a graphical display of the RDS group counter information, shown in Figure 30. This window is

available under menu Window RDS Group Counters.

Figure 30. RDS Group Counter Window

Rev. 0.3

Si477x-EVB

6. Hardware Description

The evaluation hardware consists of two components: a daughtercard and a baseboard.

Note: Refer to Rev. 0.1 of this document if the Si475x/6x Baseboard is supplied.

6.1. Feature Overview

Figure 31. “EVB Features Using Quark Baseboard” shows various connections, jumpers, adjustments, and

features for an EVB using a Quark baseboard.

Figure 31. EVB Features Using Quark Baseboard

Rev. 0.3

Si477x-EVB

Table 1. EVB Feature Descriptions

Description

Reference

FM antenna connector/test conductor.

AM antenna connector

JP1

J33

AM test connector

Tuner pin/net connection points.

9 V input to LDOs. Maximum 11 V.

J48

J56

VIO 1/2 inputs. Source with bench power supply if on-board LDOs are not used.

VA/VD inputs. Source with bench power supply if on-board LDOs are not used.

VIO1 LDO adjust. (1.2–3.6 V, nominal 3.3 V)

R72

J57

R74

J60

J59

J58

R73

SW1

Selects tuner VIO1 source from LDO or TERMinal.

VIO2 LDO adjust. (1.7–3.6 V, nominal 3.3 V)

Selects tuner VIO2 source from LDO or TERMinal.

Selects tuner VA source from fixed 5 V LDO/USB or TERMinal.

Selects tuner VD source from LDO or TERMinal.

VD LDO adjust. (2.7–3.6 V, nominal 3.3 V)

Selects USB or 9 V input to LDO. Note that in USB position PC 5 V sources VA directly which

could result in decreased performance. Center position is off.

J13

J14

L/R_LINE_OUT. L/R lineout (direct from tuner). (Rev 3 and later)

Buffered/110 kHz lowpass filtered L-ch analog output when in MPX mode. (Rev 2)

HEADPHONE_OUT. Buffered headphone out. (Rev 3 and later)

Buffered, 30 kHz lowpass filtered L, R channel outputs when in L/R audio mode. (Rev 2)

D3-D6

PB1

LEDs.

MCU Reset.

J15

USB connector.

Current measurement jumpers.

J9-J12

Rev. 0.3

Si477x-EVB

6.2. Daughtercard

Each evaluation kit will be provided with an Si477x daughtercard.

Each daughtercard contains the minimal application circuit, including the following:

Si477x Tuner IC

RF Input circuitry

Crystal

EEPROM for serial number, calibration constants, and crystal information

Each daughtercard features a number of test points with direct access to the tuner signal pins. These signals may

be disconnected from the baseboard connector by removing either a 0  jumper or by removing a solder dot on a

printed chevron pattern. Small vias allow for connection via wire-wrap wire.

The reference frequency is generated by the on-chip crystal oscillator by default. If desired, the reference clock

may be sourced by the baseboard oscillator or an external generator by removing the crystal and inserting a 0.1uF

capacitor to bridge the connection.

Refer to "7. Hardware Schematics and PCB Layout" on page 32 for daughtercard schematics and PCB layouts.

6.3. Baseboard

The Quark baseboard contains all support circuitry, including the following:

Power supplies: all four Si477x supplies derived from USB 5 V or wall pack 9 V supplies

USB HID-based communications interface via C8051F340 microcontroller

Test points for all tuner interface I/O lines

Direct and buffered L/R/MPX analog outputs

6.3.1. Power Supplies

On-board LDOs generate VA, VD, VIO1, and VIO2 supplies for the tuner. Three of these, VD, VIO1, and VIO2, are

adjustable via trimpot. Level translation to other blocks, such as the microcontroller, is via discrete translators.

Switch SW1 selects the LDO configuration as sourced from the 9 V coaxial connector or the USB 5 V supply from

the PC. When in the USB position, the 5 V analog supply to the tuner is derived directly from the PC USB supply.

Notes:

The USB power supply option is provided for convenience but may result in decreased RF performance

due to PC power supply noise and lack of regulation between PC and the tuner's analog power supply.

Regulation inaccuracy and cable loss may result in a VA supply voltage below specification.

Ensure any wall power supply has a maximum output voltage of less than 11 V. Higher voltages will

engage a clamping diode and may damage the LDOs.

Jumpers, shown highlighted in Figure 32. “Power Supply Jumpers”, select each tuner supply's source as either the

on-board LDO (shown) or external (via J1/J2).

Tuner supply currents may be measured by opening jumpers J9-J12 and inserting an ammeter in positions JP8-

JP11.

Rev. 0.3

Si477x-EVB

Figure 32. Power Supply Jumpers

6.3.2. Microcontroller/USB Interface

Communication to the tuner and configuration is through firmware on a Silicon Laboratories C8051F340 USB

microcontroller. This device translates USB commands via HID interface to I C control words to the tuner.

PB1 resets the microcontroller.

LED's D3–D6 are driven by the microcontroller. The green LED D4 lights when the microcontroller has booted.

The USB connection may be disconnected once the tuner is configured. Tuner settings will persist until reset or the

power is removed.

Rev. 0.3

Si477x-EVB

6.3.3. Headphone Amplifier/Buffer

Left and Right audio outputs are buffered and lowpass filtered by on-board amplifiers in Figure 33. “Audio Output”.

The software automatically selects the L/R audio-band output when AM or FM modes are selected. The left

channel/MPX output is selected in MPX mode only.

Unbuffered L/R outputs are available at the debug header J48.

Note: Use L/R outputs directly from tuner for THD, SINAD, and stereo imbalance measurements. The headphone amplifier

may degrade performance.

The analog L/R and MPX outputs are available at two 3.5 mm jacks. The function of each jack varies by baseboard

revision.

The left jack is a direct, dc-coupled L/R/MPX output from the tuner. This output should be used for all low-distortion

laboratory measurements. The right jack is an ac-coupled, unity-gain-buffered L/R output for listening through

headphones or powered speakers.

Figure 33. Audio Output

Rev. 0.3

Si477x-EVB

6.4. Si4770Module-A-EVB

Separately from the Si477x-EVB kit, user's may also order an Si4770Module-A-EVB kit. The Si4770Module-A-EVB

kit consists of an Si4770 Module and Si477x Interposer card. Together, these serve in place of a daughter card on

an Si477x EVB. Alternatively, the Si4770 Module can be installed into a user-created system with a compatible

pinout. To use the Si4770Module-A-EVB in conjunction with an Si477x EVB, connect the module, interposer card,

and baseboard as shown in the figure below.

Note: The Si4770 Module is configured by default for an AM Loop Antenna connected through the Si47xx Interposer card. For

optimum results in conducted tests through the AM Test SMA connector, remove transformer T2 from the AM signal path

on the Si4770 Module.

Figure 34. Si4770Module-A-EVB Module and Interposer Card

Rev. 0.3

Si477x-EVB

7. Hardware Schematics and PCB Layout

This section contains schematics, PCB layouts, and Bills of Material for all daughtercards (DCs) and the baseboard

(BB).

Rev. 0.3

Si477x-EVB

7.1. Si477x Daughtercard Rev 2.0

ꢌ ꢐ

ꢖ ꢏ

ꢖ ꢒ

ꢃ ꢋ

ꢃ ꢌ

ꢃ ꢃ

ꢃ ꢍ

ꢃ ꢈ

ꢃ ꢄ

ꢃ ꢅ

ꢃ ꢉ

ꢃ ꢊ

ꢍ ꢐ

ꢋ ꢊ

ꢋ ꢉ

ꢋ ꢅ

ꢋ ꢄ

ꢋ ꢈ

ꢋ ꢍ

ꢋ ꢃ

ꢋ ꢌ

ꢋ ꢋ

ꢕ ) ꢎ !

ꢆ ) ꢎ !

: ! ꢏ ꢕ ꢌ

: ! ꢏ ꢕ ꢋ

ꢖ ' ) ꢋ

' ꢀ ! ꢚ

ꢓ ꢔ ꢕ

ꢓ ꢒ ꢏ

ꢆ ꢓ ! ꢚ

ꢀ ꢔ

ꢒ ꢏ ꢔ ꢆ ꢘ ꢇ

ꢑ ꢁ ' ) ꢌ

ꢑ ꢁ ' ) ꢋ

ꢇ ; ꢏ ꢑ ꢔ ꢌ

ꢇ ; ꢏ ꢑ ꢔ ꢋ

ꢃ ꢗ ꢌ 6 ꢌ ꢗ ꢈ

ꢀ ꢔ

ꢏ ꢋ

ꢏ ꢐ

ꢍ ꢋ

ꢑ ꢀ ꢒ ꢜ ꢁ ꢏ ꢒ

Rev. 0.3

Si477x-EVB

Table 2. Si477x DC Rev 3.0 Bill of Materials

Qty

Ref Des

Description

CAP,SM,0402

Value

100PF

18PF

Mfr

Mfr Part Number

GRM1555C1H101JZ01

GRM1555C1H180JZ01

MURATA

C10

C11,C12,C22,

C23,C24,C25,

C26,C27

C13,C17,C21

CAP,SM,0402

0.1UF

2.2NF

MURATA

GRM155R71A104KA01D

GRM155R71H222KA01

C2,C3,C4,C5,

C6,C20

CAP,SM,6.3V, X5R,0603

CAP,SM,0402

10UF

1NF

MURATA

DIGIKEY

YAZAKI

GRM188R60J106ME47D

GRM155R61H102KA01

GRM1555C1H620JD01

PESD0402-140TR-ND

RA2EJ2-6G

CAP,SM,0402

62PF

D1,D2,D3

J1,J33

ESD PROTECTOR,SM

CONN, SMA, EDGEMOUNT

CONN,SM,2X30

SAMTEC

MURATA

SFM-130-02-S-D-A

HTSW-101-07-G-D

LQW18ANR22G00

LQW18AN47NG00

LQW18ANR15G00

LQW18AN10NJ00D

JP1

CONN,TH,HEADER,1X2

IND,SM,0603

220NH

47NH

150NH

10NH

IND,SM,0603

R1,R4

RES,SM,0402

BALUN,1:1, TOKO

TRANSFORMER,THRU-HOLE

IC,SM,SI4770,MLP40

TOKO

458PT1566

SL755TF01

SI477x

SILABS

SILICON LABO-

RATORIES

IC,SM,RAM

MICROCHIP

TAI_SAW

34LC02

XTAL,SM,3.2 X 2.5 MM

37.209375 MHz

TZ1522A

Rev. 0.3

Si477x-EVB

Figure 36. Si477x Daughtercard Rev 2.0 Silkscreen

Rev. 0.3

Si477x-EVB

Figure 37. SI477x Daughtercard Rev 2.0 L1 Copper

Rev. 0.3

Si477x-EVB

Figure 38. Si477x Daughtercard Rev 2.0 L2 Copper

Rev. 0.3

Si477x-EVB

Figure 39. Si477x Daughtercard Rev 2.0 L3 Copper

Rev. 0.3

Si477x-EVB

Figure 40. Si477x Daughtercard Rev 2.0 L4 Copper

Rev. 0.3

Si477x-EVB

7.2. Quark Baseboard Rev 1.0

J 1 8

J 1 7

Rev. 0.3

Si477x-EVB

R 2 0

1 0 K

Rev. 0.3

Si477x-EVB

Rev. 0.3

Si477x-EVB

P 2 . 1

P 2 . 0

P 1 . 7

P 1 . 6

P 1 . 5

P 1 . 4

P 1 . 3

P 1 . 2

P 1 . 1

P 1 . 0

P 0 . 7

P 0 . 6

P 3 . 6

2 4

P 3 . 7

2 3

P 4 . 0

2 2

P 4 . 1

2 1

P 4 . 2

2 0

P 4 . 3

1 9

P 4 . 4

1 8

P 4 . 5

1 7

P 4 . 6

1 6

P 4 . 7

1 5

C 2 D

1 4

/ R S T / C 2 C K

1 3

3 7

3 8

3 9

4 0

4 1

4 2

4 3

4 4

4 5

4 6

4 7

4 8

1 U F

U S B _ C O N N E C T

C 1 6 4

U S B _ C H O K E

V C C

D +

D -

G N D

L 3

Rev. 0.3

Si477x-EVB

Rev. 0.3

Si477x-EVB

Figure 46. Quark Baseboard Top Silkscreen

Rev. 0.3

Si477x-EVB

Figure 47. Quark Baseboard L1 Copper

Rev. 0.3

Si477x-EVB

Figure 48. Quark Baseboard L2 Copper

Rev. 0.3

Si477x-EVB

Figure 49. Quark Baseboard L3 Copper

Rev. 0.3

Si477x-EVB

Figure 50. Quark Baseboard L4 Copper

Rev. 0.3

Si477x-EVB

Figure 51. Quark Baseboard Bottom Silkscreen

Rev. 0.3

Si477x-EVB

7.3. Si4770 Module Rev1.0

1 9

1 8

1 7

1 6

1 5

1 4

1 3

1 2

1 1

1 0

A M _ L P 2

A M _ L P 1

2 0

1 9

1 8

1 7

1 6

1 5

1 4

1 3

1 2

1 1

V A

V D

3 1

3 2

3 3

3 4

3 5

3 6

3 7

3 8

3 9

4 0

L O U T

R O U T

X T A L 2

X T A L 1

V I O 1

I N T B

S C L

S D A

R S T B

N C

F M _ A N T

D A C R E F

G P I O 2

G P I O 1

F M A G C 2

F M A G C 1

3 . 2 x 2 . 5

N C

A 1

A 0

4 1

G N D _ P A D

F M _ A N T

Rev. 0.3

Si477x-EVB

Rev. 0.3

Si477x-EVB

Figure 54. Module L1 Copper

Rev. 0.3

Si477x-EVB

Figure 55. Module L2 Copper

Figure 56. Module L3 Copper

Rev. 0.3

Si477x-EVB

Figure 57. Module L4 Copper

Rev. 0.3

Si477x-EVB

7.4. Si477x Interposer Rev 1.0

1 9

1 8

1 7

1 6

1 5

1 4

1 3

1 2

1 1

1 0

Rev. 0.3

Si477x-EVB

Figure 59. Interposer Top Silkscreen

Rev. 0.3

Si477x-EVB

Figure 60. Interposer L1 Copper

Rev. 0.3

Si477x-EVB

Figure 61. Interposer L2 Copper

Rev. 0.3

Si477x-EVB

DOCUMENT CHANGE LIST:

Revision 0.1 to Revision 0.2

Converted document to Quark Baseboard.

Revision 0.2 to Revision 0.3

Added support for the Si4770Module-A-EVB.

Rev. 0.3

Si477x-EVB

NOTES:

Rev. 0.3

Si477x-EVB

CONTACT INFORMATION

Silicon Laboratories Inc.

400 West Cesar Chavez

Austin, TX 78701

Tel: 1+(512) 416-8500

Fax: 1+(512) 416-9669

Toll Free: 1+(877) 444-3032

Please visit the Silicon Labs Technical Support web page:

https://www.silabs.com/support/pages/contacttechnicalsupport.aspx

and register to submit a technical support request.

The information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice.

Silicon Laboratories assumes no responsibility for errors and omissions, and disclaims responsibility for any consequences resulting from

the use of information included herein. Additionally, Silicon Laboratories assumes no responsibility for the functioning of undescribed features

or parameters. Silicon Laboratories reserves the right to make changes without further notice. Silicon Laboratories makes no warranty, rep-

resentation or guarantee regarding the suitability of its products for any particular purpose, nor does Silicon Laboratories assume any liability

arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation conse-

quential or incidental damages. Silicon Laboratories products are not designed, intended, or authorized for use in applications intended to

support or sustain life, or for any other application in which the failure of the Silicon Laboratories product could create a situation where per-

sonal injury or death may occur. Should Buyer purchase or use Silicon Laboratories products for any such unintended or unauthorized ap-

plication, Buyer shall indemnify and hold Silicon Laboratories harmless against all claims and damages.

Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc.

Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders.

Rev. 0.3

SI477x [SILICON]

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